作者： Wang, Xinqi;Lu, Xia;Yi, Xingyun;Li, Zhuoqing;Zhou, Yimin;...

期刊： Journal of Soils and Sediments,2021年21(3):1408-1419 ISSN：1439-0108

通讯作者： Lei, Ming

作者机构： [Wang, Xinqi; Li, Zhuoqing; Lei, Ming; Zhou, Yimin; Lu, Xia] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Duan, Guilan; Yi, Xingyun] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China.;[Duan, Guilan; Yi, Xingyun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.

通讯机构： [Lei, Ming] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.

关键词： agricultural land;cadmium;contaminated land;fallow;fungus;microbial activity;microbial community;nutrient availability;paddy farming;paddy field;soil microorganism;soil nutrient;soil pollution;species diversity;Acidobacteria;Alphaproteobacteria;Archaea;Bacteria (microorganisms);Betaproteobacteria;Chloroflexi

摘要： Purpose: Fallowing is an improvement process aimed at promoting the soil health and the sustainability of cultivated land. How it affects the soil health-related abiotic properties and microbial community composition under different levels of cadmium (Cd) contamination is not well known. Materials and methods: This study involved applying consistent fallowing practices to paddy soils of low and high Cd content, in order to examine changes in the soil Cd, nutrient, and microbial community using a high-throughput sequencing method. Results and discussion: Fallowing significantly decreased available Cd and phosphorus (P) content, but increased ammonium nitrogen (N) on lightly contaminated plots, whereas only P variables changed significantly for heavily contaminated plots. Furthermore, fallowing significantly decreased bacterial Shannon diversity on lightly contaminated plots and altered bacterial community composition on heavily contaminated plots, but it had no impact on archaeal or fungal communities, indicating that bacteria are more sensitive to fallowing than archaea and fungi. Specifically, fallowing significantly promoted some copiotrophic bacteria (Alphaproteobacteria and Betaproteobacteria) but suppressed some oligotrophic taxa (Chloroflexi phylum and OTU5837 belonging to the phylum Acidobacteria) on highly contaminated plots. Interestingly, the soil microbial community in the lightly contaminated plots was mainly affected by soil pH, C, and N properties, whereas on heavily contaminated plots, it was largely influenced by soil Cd and P variables. Conclusions: Overall, these findings showed that fallowing significantly improved soil N availability but decreased Cd availability in lightly contaminated conditions, while shifts in microbial community composition under heavily contaminated conditions may indirectly enhance soil nutrient availability and reduce available Cd. These findings highlight the significance of fallowing to promote the health and the sustainability of Cd-contaminated cultivated land. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

语种： 英文

作者： Wang, Xinqi;Deng, Sihan;Zhou, Yimin;Long, Jiumei;Ding, Dan;...

期刊： Environmental Science and Pollution Research,2021年28(7):7828-7839 ISSN：0944-1344

通讯作者： Lei, Ming

作者机构： [Long, Jiumei; Du, HuiHui; Tie, Bai Qing; Wang, Xinqi; Ding, Dan; Chen, Congying; Deng, Sihan; Lei, Ming; Zhou, Yimin] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Long, Jiumei] Hengyang Normal Univ, Coll Environm & Life Sci, Hengyang 421001, Peoples R China.

通讯机构： [Lei, Ming] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.

关键词： Foliar application;Iron fertilization;Chelated iron;Photosynthesis;Antioxidant enzyme;Cadmium accumulation

摘要： Iron (Fe) fertilizer can reduce cadmium (Cd) uptake and toxicity in rice, but the underlying mechanisms of Cd mitigation by different fertilizers are poorly understood. Here, pot experiments in rice were conducted to characterize the effects of four types of foliar-applied Fe fertilizer (chelated ferrous Fe, ferric Fe, ionic ferrous Fe, and ferric Fe) at three doses (20, 50, and 100mgL−1) on photosynthetic capacity, antioxidant ability, yield, and Cd accumulation in Cd-contaminated soil. The results showed that foliar Fe application increased the net photosynthesis rate by 19.3%, peroxidase (POD) by 18.2%, superoxide dismutase (SOD) by 26.9%, and catalase (CAT) by 19.6%, and led to a 7.2% increase in grain yield compared with the control. Moreover, foliar Fe application significantly reduced Cd accumulation by 15.9% in brown rice and decreased the translocation of Cd from roots to other plant tissues. Overall, application of moderate doses (50mgL−1) of chelated ferrous Fe was the most effective method for reducing Cd uptake (decreasing the Cd concentration in brown rice by 29.0%) and toxicity in rice (decreasing malondialdehyde by 23.2% and increasing POD, SOD, and CAT by 54.4%, 51.6%, and 45.7%, respectively), which may stem from the fact that chelated ferrous Fe was a more stable and bioavailable source of Fe for rice. The Cd concentration in rice had negative relationship with Fe concentration, and the translocation of Cd from root to the other tissues was reduced by the higher Fe nutrition status in leaf, suggesting that a high Fe supply may decrease Cd content by inhibiting the expression of the Fe transport system. These results indicate that foliar application of chelated ferrous Fe provides a promising alternative approach for enhancing growth and controlling Cd accumulation in rice plants. Furthermore, these results advance our understanding of the associations between plant Fe nutrition status and Cd accumulation. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： 周一敏;黄雅媛;刘晓月;李冰玉;刘羽翼;...

期刊： 环境科学,2021年42(2):932-940 ISSN：0250-3301

通讯作者： Lei, Ming(leiming8297@163.com)

作者机构： [周一敏; 黄雅媛; 李冰玉; 李卓晴; 王薪琪; 雷鸣] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;[刘晓月] Aerospace Kaitian Environmental Technology Co., Ltd., Changsha;410100, China;[刘羽翼] Hunan Breath Environment Technology Co., Ltd., Changsha

关键词： 水稻;镉;富集;叶面喷施;纳米MnO2

摘要： 镉( Cd)容易被水稻富集,从而造成稻米中Cd含量超标,严重威胁人类健康.锰( Mn)是植物必需元素,为了探究叶面喷施纳米MnO_2对水稻富集Cd的影响机制,本研究在酸性Cd污染土壤上进行田间小区试验,在水稻抽穗早期叶面喷施0.1%、 0.3%和0.5%的纳米MnO_2溶液.结果表明与对照组相比,叶面喷施不同浓度的纳米MnO_2可以有效降低水稻叶、壳和糙米中的Cd含量,增加所有部位的Mn含量,但对水稻的产量影响不大.叶面喷施纳米MnO_2后,提高了叶片光合作用效果,抑制了叶片脂质过氧化,增加了氧化应激酶的含量,从而缓解Cd对水稻的胁迫.此外,叶面喷施纳米MnO_2增加了水稻根表铁锰胶膜的含量,强化了铁锰胶膜对Cd的吸附/共沉淀作用,从而限制水稻根系吸收Cd.因此,在水稻抽穗早期叶面喷施纳米MnO_2是一种增加糙米中Mn含量和减少Cd含量的有效措施.

语种： 中文

作者： 刘耀;雷鸣

期刊： 职业卫生与应急救援,2020年38(03):242-245+267 ISSN：1007-1326

作者机构： 湖南农业大学资源环境学院,湖南长沙410128;湖南安全职业技术学院,湖南长沙410151;[雷鸣; 刘耀] 湖南农业大学

关键词： 职业健康;茶尘;噪声;职业危害风险指数评估法

摘要： 目的 为建立符合我国实际的茶叶制造职业健康风险评估指南或体系提供依据.方法 运用ICMM职业健康评估模型和职业危害风险指数评估法分别对湖南省某茶业公司粉尘、噪声危害进行评估,并对评估结果进行比较.结果 该企业存在的主要职业病危害因素为粉尘(茶尘、煤尘)和噪声;两种方法评估结果显示,切茶岗位茶尘职业健康风险、机器压制岗位噪声职业健康风险均最高.结论 职业危害风险指数评估法的评估过程更为科学和细致,评估结果更符合实际生产状况.

语种： 中文

作者： Du, Huihui;Tao, Jie;Yang, Ruijia;Lei, Ming*;Tie, Boqing;...

期刊： Journal of Soils and Sediments,2020年20(5):2418-2425 ISSN：1439-0108

通讯作者： Lei, Ming

作者机构： [Tao, Jie; Nie, Ning; Xu, Zelin; Du, Huihui; Tie, Boqing; Hu, Meng; Lei, Ming; Liu, Xin; Yang, Ruijia] Hunan Agr Univ, Coll Resources & Environm, Hunan Engn & Technol Res Ctr Irrigat Water Purifi, Changsha 410128, Peoples R China.;[Tao, Jie; Nie, Ning; Xu, Zelin; Du, Huihui; Tie, Boqing; Hu, Meng; Lei, Ming; Liu, Xin; Yang, Ruijia] Minist Agr, Key Lab Southern Farmland Pollut Prevent & Contro, Changsha 410128, Peoples R China.

通讯机构： [Lei, Ming] H;[Lei, Ming] M;Hunan Agr Univ, Coll Resources & Environm, Hunan Engn & Technol Res Ctr Irrigat Water Purifi, Changsha 410128, Peoples R China.;Minist Agr, Key Lab Southern Farmland Pollut Prevent & Contro, Changsha 410128, Peoples R China.

关键词： adsorption;antimony;bacterium;birnessite;detection method;manganese oxide;oxidation;toxicity;Bacillus cereus;Bacteria (microorganisms)

摘要： Purpose: The adsorption-oxidation of Sb on manganese oxide plays an important role in controlling Sb mobility and fate in soils and sediments. Widespread organic substances such as microbes may greatly affect this process, and deserve a careful investigation. This study examines the adsorption and oxidation of Sb(III, V) on birnessite, a typical manganese oxide, with and without Bacillus cereus cells. Materials and methods: Adsorption isotherms were conducted to explore the adsorption capacity of Sb to the birnessite–bacteria composite. X-ray photoelectron spectroscopy (XPS) was applied to determine the valence state of Mn and the adsorbed Sb species. Results and discussion: The SEM results show that birnessite adheres to the outer surface of bacterial cells, and the aggregation of minerals occurs to a lesser extent in the presence of cells. Batch adsorption results show a much larger Sb adsorption on individual birnessite than on bacteria, and the measured Sb adsorption to the birnessite–bacteria composite is larger than that predicted assuming additive, i.e., the sum of the end-member metal adsorptivities. On birnessite, Sb(III) is predominately oxidized to Sb(V) according to the XPS analysis, and the presence of bacteria hinders this oxidation reaction. Conclusions: We propose that microbe−birnessite association favors the immobilization of Sb on solid phases, but can inhibit the oxidation of Sb(III) to Sb(V), which is of great significance for evaluating the toxicity, bio-availability, and mobility of Sb in both natural and contaminated environments. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： Ayaz, Tehreem;Khan, Sardar*;Khan, Amir Zeb;Lei, Ming;Alam, Mehboob

期刊： Journal of Environmental Management,2020年255:109833 ISSN：0301-4797

通讯作者： Khan, Sardar

作者机构： [Ayaz, Tehreem; Lei, Ming] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Ayaz, Tehreem; Khan, Sardar; Khan, Amir Zeb] Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.;[Alam, Mehboob] Univ Agr, Dept Hort, Peshawar 25120, Pakistan.;[Khan, Sardar] Chinese Acad Sci, Inst Urban Environm, Soil Environm Sci, Xiamen 1799, Peoples R China.

通讯机构： [Khan, Sardar] C;Chinese Acad Sci, Inst Urban Environm, Soil Environm Sci, Xiamen 1799, Peoples R China.

关键词： Biochemical oxygen demand;Cadmium;Chemicals removal (water treatment);Copper;Cost effectiveness;Dissolution;Dissolved oxygen;Industrial plants;Industrial water treatment;Organic carbon;Wastewater treatment;Wetlands;Constructed wetland;Cost effective;Environmentally-friendly technology;Heavy metal removal;Hydrophyte efficiency;Industrial estate;Industrial wastewaters;Pakistan;Pot experiment;Water Hyacinth;Efficiency;heavy metal;bioremediation;Pakistan;sewage;waste water;water pollutant;wetland;Biodegradation, Environmental;Metals, Heavy;Pakistan;Waste Disposal, Fluid;Waste Water;Water Pollutants, Chemical;Wetlands

摘要： Remediation and management of industrial wastewater (IWW) using hydrophytes act as one of the cost effective and environmentally friendly technologies. The present study was conducted to assess the role and efficiency of selected four hydrophyte species through constructed wetland (CW) for the removal of heavy metals (HMs) from IWW. Samples of wastewater (WW) were collected from the main drain of Hayatabad Industrial Estate (Peshawar, Pakistan) and analysed for HMs like cadmium (Cd), copper (Cu) and lead (Pb) along with basic physicochemical parameters like pH, electric conductivity (EC), total suspended solids (TSS), total dissolved solids (TDS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), dissolved organic carbon (DOC) through standard analytical methods. Four hydrophytes species such as Typha latifolia (cattail), Eichhornia crassipes (water hyacinth), Lemna gibba (duck weed) and Pistia stratiotes (water cabbage) were transplanted into CW (mix cultivation). Each selected species was also cultivated in individual pots for investigating their efficiency to remove HMs. The Cd, Cu and Pb removal efficiency of CW was recorded as 39.5%, 80.3% and 85.5%, respectively. The removal efficacy of hydrophyte species including cattail, water hyacinth, duck weed and water cabbage was 96.2%, 72.2%, 60.4% and 93.3%, respectively for Cd, while 83.6%, 82.3%, 90.0% and 81.7% for Cu and 95.9%, 78.0%, 91.3% and 97.1% for Pb, respectively. Findings of T-Test and One-Way ANOVA showed that the concentrations of Cd, Cu and Pb in IWW were significantly (P ≤ 0.01) reduced by the treatment of hydrophytes revealing the higher efficiency of CW and selected species used in this study. The HMs were removed in order of Pb > Cu > Cd. Most efficient removal for Cd was found by water cabbage, Cu by duck weed and Pb by water hyacinth. It was concluded that CW is one of the environmentally friendly and cost-effective technologies that can be used for the treatment of IWW due to the efficiency of hydrophytes species in terms of HMs removal. © 2019 Elsevier Ltd

语种： 英文

作者： Du, Huihui*;Xu, Zelin;Hu, Meng;Zhang, Huanjing;Peacock, Caroline L.;...

期刊： Chemical Geology,2020年540:119567 ISSN：0009-2541

通讯作者： Du, Huihui

作者机构： [Xu, Zelin; Nie, Ning; Du, Huihui; Tie, Boqing; Hu, Meng; Liu, Xin; Lei, Ming; Zhang, Huanjing; Xue, Qin] Hunan Agr Univ, Coll Resources & Environm, Hunan Engn & Technol Res Ctr Irrigat Water Purifi, Changsha 410128, Peoples R China.;[Nie, Ning; Du, Huihui; Tie, Boqing; Liu, Xin; Lei, Ming] Minist Agr, Key Lab Southern Farmland Pollut Prevent & Contro, Changsha 410128, Peoples R China.;[Peacock, Caroline L.] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England.;[Du, Huihui] 1st Nongda Rd, Changsha, Peoples R China.

通讯机构： [Du, Huihui] 1;1st Nongda Rd, Changsha, Peoples R China.

关键词： Adsorption;Iron (hydr)oxide;Isothermal titration calorimetry;NOM;Organo-mineral association;Tungsten;Tungsten reduction

摘要： Tungsten is both naturally occurring and an anthropogenically released contaminant metal in soils, sediments and water systems that typically exits as the soluble tungstate oxyanions, W(VI)O4 2−. Tungsten mobility and fate are strongly dependent on the adsorption of tungstate to mineral surfaces. However, environmental mineral surfaces are commonly coated with natural organic matter (NOM), and the role of this coating in the tungsten adsorption process, and thus in controlling tungsten reactivity and transport, is unclear. This study investigates W(VI) adsorption to ferrihydrite (Fh), a ubiquitous iron (hydr)oxide in soils and sediments, both in the absence and presence of humic acid (HA), a widely occurring type of NOM, using batch experiments coupled with spectroscopic and thermodynamic techniques. Kinetic results indicate that access to the adsorption sites for W(VI) on the organomineral surfaces is limited when Fh is coprecipitated with HA. Commensurate with this observation, batch experiments show that HA decreases W(VI) adsorption to Fh over a wide pH range (4–11), and this inhibitory effect is more pronounced at higher HA concentration. X-ray photoelectron spectroscopy (XPS) measurements demonstrate the formation of inner-sphere type W complexes on both the Fh and HA fraction of the Fh-HA binary composite. In particular, ~40% of the adsorbed W(VI) species is reduced to W(V) in the presence of HA. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) results show the presence of poly tungstate species on Fh, particularly at lower pH and in the presence of HA. Isothermal titration calorimetry shows that W(VI) adsorption to Fh is an exothermic process both in the presence and absence of HA, and that process is accompanied by a positive entropy. The findings of this work suggest that NOM not only mobilizes tungstate but also reduces tungstate from W(VI) to W(V) at environmental iron (hydr)oxide-water interfaces, which is of significance for evaluating the migration and bioavailability of tungsten in both natural and contaminated environments. © 2020 Elsevier B.V.

语种： 英文

作者： Muhammad, Juma;Khan, Sardar*;Lei, Ming;Khan, Muhammad Amjad;Nawab, Javed;...

期刊： Environmental Technology & Innovation,2020年19:100909 ISSN：2352-1864

通讯作者： Khan, Sardar

作者机构： [Khan, Sardar; Muhammad, Juma; Khan, Muhammad Amjad; Rashid, Abdur] Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.;[Muhammad, Juma] Shaheed Benazir Bhutto Univ Sheringal, Dept Environm Sci, Dir Upper, Pakistan.;[Lei, Ming] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Nawab, Javed] Abdul Wali Khan Univ Mardan, Dept Environm Sci, Mardan, Pakistan.;[Rashid, Abdur] Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China.

通讯机构： [Khan, Sardar] U;Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.

关键词： Food plant contamination;Health risk;Potentially toxic elements;Poultry manure;Soil contamination

摘要： Potentially toxic elements (PTEs) are used in the poultry feed as additives and growth promoters which can transfer to food plants grown on manure-amended agricultural soils. The consumption of food plants grown on manure-amended soil can cause health risk due to presence of high level of PTEs. In this study, PTE concentrations in poultry-manure, soil and food plants of agriculture fields, collected from eleven districts of Khyber Pakhtunkhwa, Pakistan, were analyzed using Inductive Coupled Plasma Mass Spectrophotometer. The selected PTEs including cadmium (Cd), chromium (Cr), nickel (Ni), cobalt (Co), copper (Cu), barium (Ba) and lead (Pb) were observed below the permissible limits set by United States Environmental Protection Agency (US-EPA) in the samples of manure and soils. The concentrations of Cu (0.81-247 mg kg(-1)) and Cr (0.18-9.81 mg kg(-1)) in most of the food plants were significantly (p<0.05 for Cu and p<0.01 for Cr) higher and crossed the limits set by State Environmental Protection Administration (SEPA), China. The mean concentrations of Pb (ranged 0.41(-1)1.4 mg kg(-1)) in selected food plants were significantly (p<0.01) higher and above the limit (0.3 mg kg(-1)) of WHO/FAO. The concentrations of Cd in radish (0.45 mg kg(-1)), clover (0.31 mg kg(-1)), lettuce (0.34 mg kg(-1)) and arugula (0.28 mg kg(-1)) were also above the permissible limit (0.2 mg kg(-1)) of SEPA-China. PTEs like Cd, Cr, Cu and Pb showed higher (>1) bioaccumulation values in the selected plants like radish, garlic, barley and wheat. Among selected PTEs, Co, Ni and Ba shown lower bioaccumulation values and assumed to have no serious health risk. The HRI values were found >1 in barley (for Cu and Cd), wheat and radish (for Cu, Cd and Pb only), pea and onion (for Cd only) that may cause potential health risk to the local community. This study revealed that application of poultry-manure contaminates agricultural soil and food plants that might cause health risk therefore, necessary steps should be taken to ensure safe management of poultry manure in farm lands and also enable decision makers in farming sector to establish satisfactory standards for the use of manure in conventional and organic farming. (c) 2020 Elsevier B.V. All rights reserved.

语种： 英文

作者： 邓思涵;龙九妹;陈聪颖;周一敏;李永杰;...

期刊： 中国农学通报,2020年36(01):1-5 ISSN：1000-6850

作者机构： 湖南农业大学资源环境学院,长沙410128;衡阳师范学院生命科学与环境学院,湖南衡阳421000;[龙九妹; 雷鸣; 李永杰; 陈聪颖; 周一敏; 邓思涵] 湖南农业大学

关键词： 叶面肥;水稻;镉;水稻叶片;阻控;营养吸收

摘要： 为探究不同叶面肥阻控水稻富集镉的机制,以期为解决农田重金属镉污染和食品安全问题提供科学的依据.本研究归纳了镉对水稻的生长危害,水稻叶与叶面肥的特征包括水稻叶与水稻的养分吸收、叶面肥的种类、叶面肥的特点及叶面肥阻控水稻富集镉的机理.指出影响叶面肥阻控水稻富集镉的效果因素,如天气、温度、利用率、喷施次数和浓度等,提出与其他阻控措施相结合、开展其他种类叶面肥研究、继续叶面肥理论基础研究及加强统一管理和规范操作技术等一系列展望.

语种： 中文

作者： 杜辉辉;刘新;陶洁;雷鸣;刘玉玲;...

期刊： 环境科学学报,2020年40(6):2205-2211 ISSN：0253-2468

通讯作者： Lei, M.

作者机构： 湖南农业大学资源环境学院,长沙410128;湖南省灌溉水源水质污染净化工程技术研究中心,长沙410128;农业农村部南方产地污染防控重点实验室,长沙410128;[杜辉辉; 刘新; 陶洁; 雷鸣; 刘玉玲; 杨蕊嘉; 铁柏清] College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China<&wdkj&>Hunan Engineering & Technology Research Center for Irrigation Water Purification, Changsha, 410128, China<&wdkj&>Key Laboratory of Southern Farmland Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Changsha, 410128, China

通讯机构： College of Resources and Environment, Hunan Agricultural University, Changsha, China

关键词： 土壤细菌;锑;吸附

摘要： 从湖南省冷水江锡矿山尾渣土壤中筛选分离出3株具有较高锑耐性的细菌,通过宏观吸附结合X射线光电子能谱( XPS),阐明3株细菌对Sb( Ⅲ)和Sb( Ⅴ)的吸附机制.根据生理生化指标和16S rDNA序列同源性对比,鉴定出1株革兰氏阴性菌和2株革兰氏阳性菌,分别为人苍白杆菌( Ochrobactrum anthropi) 、芽孢杆菌( Bacillus sp.)及蜡状芽孢杆菌( Bacillus cereus).3株细菌都呈杆状,且都能在高锑含量营养液中良好生长.3株细菌对锑的等温吸附符合Langmuir模型,对锑的最大吸附量约为11.0~ 14.3 mg·g~(-1),其中,蜡状芽孢杆菌对锑的吸附能力高于其它两株细菌,3株细菌对Sb( Ⅲ)的吸附量略高于Sb( Ⅴ).XPS结果表明,细菌表面的羧基和氨基在锑吸附过程中发挥主导作用.本研究结果对于理解土壤微生物吸附固定锑机制及其在土壤修复中的应用有重要意义.

语种： 中文

作者： Khan, Anwarzeb;Khan, Sardar*;Lei, Ming*;Alam, Mehboob;Khan, Muhammad Amjad;...

期刊： Environmental Technology & Innovation,2020年20:101121 ISSN：2352-1864

通讯作者： Khan, Sardar;Lei, Ming

作者机构： [Khan, Anwarzeb] Univ Swat, Dept Environm & Conservat Sci, Mingora 19200, Pakistan.;[Khan, Sardar; Khan, Anwarzeb; Khan, Muhammad Amjad] Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.;[Khan, Sardar; Lei, Ming] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Alam, Mehboob] Univ Agr Peshawar, Dept Hort, Peshawar, Pakistan.;[Khan, Ajmal] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China.

通讯机构： [Khan, Sardar] U;[Lei, Ming] H;Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

关键词： Bioaccumulation;Biochar;Cancer risk;Nutrients;PTEs

摘要： Biochar can be tailored to valuable and engineered product with specified requirements, purpose of use, condition of soil, type of potential toxic elements (PTEs) to be re mediated, crops cultivated and/or types of feedstocks used as raw materials. Biochar application for remediation of metal contaminated soil has received a great attention in the recent decades. However, minimal work has been done on the role of biochar in health risk reduction through PTE immobilization. This review paper focuses on the role of biochar in soil nutrient enhancement, PTE bioavailability and health risk reduction. The presented information revealed that the effect of biochar on PTE bioavailability varied greatly depending on biochar properties that are strongly influenced by synthesis method, pyrolysis temperature and feedstock. The application of biochar has reduced PTE bioavailability, for instance, the highest reduction for As (71%), Cd (99%), Cr (43%), Cu (68%), Ni (85%), Pb (86%) and Zn (75%). This review highlights the effects of various biochars on human health through ingestion of vegetables cultivated in biochar amended soil. Different health risk indices including average daily intake (ADI) target hazard quotient (THQ) and target cancer risk (TCR) showed that biochar significantly reduces the health risk of PTEs through ingestion of vegetables grown in biochar amended soil. According to literature, the THQ values for selected PTEs were reduced such as for As (96%), Cd (95%), Cr (43%), Cu (63%), Ni (95%), Pb (86%) and Zn (84%). This review also highlights the future research consideration for effective management of biochar application for remediation of PTE contaminated soils. (C) 2020 Elsevier B.V. All rights reserved.

语种： 英文

作者： Zhou, Yi-Min;Long, Si-Si;Li, Bing-Yu;Huang, Ya-Yuan;Li, Yong-Jie;...

期刊： Environmental Science and Pollution Research,2020年27(35):44249-44256 ISSN：0944-1344

通讯作者： Lei, Ming

作者机构： [Long, Si-Si; Li, Yong-Jie; Yu, Jia-Yan; Li, Bing-Yu; Du, Hui-Hui; Lei, Ming; Huang, Ya-Yuan; Zhou, Yi-Min] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Long, Si-Si; Li, Yong-Jie; Yu, Jia-Yan; Li, Bing-Yu; Du, Hui-Hui; Lei, Ming; Huang, Ya-Yuan; Zhou, Yi-Min] Hunan Prov Irrigat Water Qual Purificat Engn Ctr, Changsha 410128, Peoples R China.;[Khan, Sardar] Univ Peshawar, Dept Environm Sci, Peshawar 25120, Pakistan.

通讯机构： [Lei, Ming] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;Hunan Prov Irrigat Water Qual Purificat Engn Ctr, Changsha 410128, Peoples R China.

关键词： Atmospheric deposit pollution;Cadmium;Foliar application;Irrigation water pollution;Simulating soil pollution

摘要： In order to unravel the cadmium (Cd) enrichment patterns in rice (Oryza sativa L.) grown under different exogenous exposure pathways, the pot experiment was conducted in a greenhouse. Cd was added to the soil-rice system via mixing soil with Cd-containing solution, irrigating the pots with Cd-containing water and leaf-spraying with Cd solution to simulate soil pollution (SPS), irrigation water pollution (IPS), and atmospheric deposit pollution sources (APS), respectively. No significant (p > 0.05) differences in plant height and rice grain yield were observed among all treatments including three different Cd pollution sources and control. The contents of Cd in rice plants significantly (p < 0.05) increased with increase in Cd concentrations in three pollution sources. The distribution pattern of Cd in the rice plant organs treated with SPS and IPS followed the order: roots > stems > leaves > husk > brown rice, while it was leaves > roots > stems > husk > brown rice treated with APS. At the same level of treatment, the highest concentration of Cd was observed in rice organs (except for middle and high concentrations treatment roots) grown under APS, followed by IPS and SPS, suggesting that the Cd bioavailability from different pollution sources followed the order of APS > IPS > SPS. It is concluded that the atmospheric pollution contributed more enrichment of rice with Cd. Therefore, in field environment, air deposits should also be analyzed for toxic metals during assessment of food chain contamination and health risk. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： 余嘉衍;李冰玉;周一敏;李永杰;雷鸣

期刊： 环境化学,2020年39(4):1024-1030 ISSN：0254-6108

作者机构： 湖南农业大学资源环境学院, 长沙, 410128;湖南省灌溉水水质净化工程中心, 湖南省灌溉水水质净化工程中心, 长沙, 410128;[余嘉衍; 雷鸣; 李永杰; 李冰玉; 周一敏] 湖南农业大学

关键词： 矿山遗址;农业土壤;重金属;风险评估;生态风险;湖南省

摘要： 为了进一步了解湖南省某矿遗址周围农田土壤重金属的风险,在该矿遗址附近两个区域(Ⅰ区、Ⅱ区)采集125个农业土壤样品,分析其中重金属(As、Cd、Cr、Cu、Pb)的含量,运用综合污染评价法、潜在生态指数法和地积累指数法对其开展风险评估.结果 表明,Ⅰ区农田土壤中As和Cd的含量比国家风险管控标准值高,属于中度污染土壤,存在着极高的潜在生态风险;地积累指数进一步指出Ⅰ区土壤中As污染属于二级污染、Cd污染属于四级污染.Ⅱ区农田土壤,除Cd的含量相对较高外,其它重金属含量均很低,该区域土壤重金属的综合污染评价值低于1.0.但是由于Ⅱ区土壤中Cd的地积累指数为1.92,表明Ⅱ区土壤受到Cd的轻度污染,存在一定的潜在风险.

语种： 中文

作者： 蒋金凤;雷鸣

期刊： 广东化工,2020年(19):257-258+254 ISSN：1007-1865

作者机构： 湖南农业大学资源环境学院

关键词： Fenton工艺;非均相Fenton;光-Fenton;电-Fenton;声-Fenton;联合技术;废水处理

摘要： Fenton试剂氧化性很强,可以氧化绝大多数有机物。Fenton工艺在废水处理中具有独特的优势,特别适用于难生物降解或有毒废水的深度处理。本文介绍了Fenton工艺的发展过程,主要类型,以及在处理有机废水中的应用情况,并对各类型工艺的优势、缺点以及未来的研究方向作出了评述。

语种： 中文

作者： 蒋金凤;缪侃滢;周一敏;彭胤斐;雷鸣

期刊： 广东化工,2020年(17):61-62+26 ISSN：1007-1865

作者机构： 湖南农业大学资源环境学院

关键词： 土壤;锑;海藻酸钠;形态分布;生态风险

摘要： 采用室内土壤培养实验,研究了不同添加浓度海藻酸钠对土壤锑形态分布的影响,结果表明:土壤中锑的形态分布是残渣态>弱酸溶态>可还原态>可氧化态。添加海藻酸钠促进了土壤中锑的其它形态向弱酸可溶态的转化,但主要形态仍旧是残渣态。随着培养时间的增加,没有添加海藻酸钠的土壤中锑的弱酸可溶态有所下降,但是添加了海藻酸钠的土壤中锑的弱酸可溶态均有不同程度的增加,增加了土壤中锑的生态风险。

语种： 中文

作者： Yang, Ruijia;Tao, Jie;Huang, Qiaoyun;Tie, Boqing*;Lei, Ming;...

期刊： Journal of Soils and Sediments,2019年19(3):1319-1327 ISSN：1439-0108

通讯作者： Tie, Boqing;Du, Huihui

作者机构： [Tao, Jie; Tie, BQ; Du, HH; Yang, Yuan; Tie, Boqing; Du, Huihui; Lei, Ming; Yang, Ruijia] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Huang, Qiaoyun; Du, Huihui] Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China.

通讯机构： [Tie, BQ; Du, HH; Du, Huihui] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China.

关键词： adsorption;anoxic conditions;antimony;cadmium;detection method;ferrihydrite;heavy metal;metalloid;pH;soil nutrient;sorption;thermodynamics

摘要： Purpose: Heavy metal and metalloid commonly coexist in soils and sediments, and interact frequently with various minerals. The coexistence of Sb and Cd is commonly observed in Sb mine area, but their co-adsorption behaviors to soil minerals still remain poorly understood. This study aimed to elucidate the co-adsorption characteristics of Cd(II) and Sb(III) by ferrihydrite (Fh) under anoxic condition. Materials and methods: Batch experiments were performed to determine the sorption capacity of Cd(II) and Sb(III) in both single and binary systems. The major functional groups that were responsible for Cd(II) and Sb(III) sorption were determined by X-ray photoelectron spectroscopy (XPS), while the thermodynamic sorption mechanisms were elucidated using isothermal titration calorimetry. Results and discussion: Cd(II) sorption on Fh increases with increasing pH levels (4–8) whereas Sb(III) sorption shows less variation with pH level variations. The Langmuir adsorption capacity is 55.54mg/g for Cd(II) and 188.19mg/g for Sb(III). In Cd–Sb binary systems, Cd(II) sorption is significantly diminished whereas Sb(III) uptake is close to single Sb(III) sorption. XPS indicates the Fe–OH groups are mainly responsible for the binding of Cd and Sb, possibly through the formation of inner-sphere complexes. This hypothesis is further confirmed by the positive entropy (ΔS) after Cd and/or Sb binding. A larger ΔS in the binary Cd–Sb titration than in their single titrations implies the formation of a ternary Fh–Sb–Cd complex, which results in a higher disorder of the sorption system. Conclusions: The presence of Sb(III) reduces Cd(II) sorption whereas Cd(II) has a negligible effect on Sb(III) sorption to ferrihydrite; moreover, Sb(III) and Cd(II) might form surface ternary complexes in binary systems. These new findings have important implications for predicting the sequestration, migration, and fate of Cd and Sb in soils. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： 熊长齐;刘念惠;李掎琛;吴燿嶷;雷鸣

期刊： 中国农学通报,2019年35(8):39-45 ISSN：1000-6850

作者机构： 湖南农业大学资源环境学院,长沙,410128;湘潭大学材料科学与工程学院,湖南湘潭,411105;[雷鸣; 刘念惠; 吴燿嶷; 熊长齐] 湖南农业大学;[李掎琛] 湘潭大学

关键词： 电解;电化学;养殖粪便;重金属

摘要： 对浏阳市永安镇某养殖场养殖粪便中Cu2+、Zn2+、Cd2+、Pb2+等重金属离子的含量进行了分析,并以石墨板为阳极、不锈钢板为阴极的电化学方法对养殖粪便进行处理,考察了电解电压、电解时间等因素,对样品不同区域pH值以及Cu2+、Zn2+、Cd2+、Pb2+等重金属离子处理效果的影响,同时计算能源消耗费用。结果表明:阳极区域的pH值呈下降的趋势,阴极区域的p H值呈上升的趋势,且反应稳定后阴极和阳极区域的pH值之和等于14;在反应器中的不同区域内,各重金属离子的去除效果均不同,阳极区域的去除效果最佳;在样品初始浓度为90 g/L、pH 6.82的条件下,当电压为40 V,电解时间为4 h时,对养殖粪便的处理效果与费用最佳,此时反应器中Cu2+、Zn2+、Cd2+、Pb2+等重金属离子的去除率分别为62.32%、79.78%、55.37%、58.56%,处理1 m3的养殖粪便所需的费用为10.75元。

语种： 中文

作者： Zhang, Hao;Peng, Liang;Chen, Anwei*;Shang, Cui;Lei, Ming;...

期刊： Carbohydrate Polymers,2019年214:276-285 ISSN：0144-8617

通讯作者： Chen, Anwei

作者机构： [Luo, Si; Peng, Liang; Shang, Cui; Shao, Jihai; Zeng, Qingru; Chen, Anwei; Zhang, Hao; Lei, Ming] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Luo, Si; Peng, Liang; Shang, Cui; Shao, Jihai; Zeng, Qingru; Chen, Anwei; Zhang, Hao; Lei, Ming] Hunan Engn & Technol Res Ctr Irrigat Water Purifi, Changsha 410128, Hunan, Peoples R China.;[He, Kai] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.

通讯机构： [Chen, Anwei] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

关键词： Adsorption;Chitosan;Chromium;Iron sulfide;Reduction;Stability

摘要： Chitosan-stabilized FeS magnetic (MC-FeS) composites were successfully prepared to address the easily oxidization of FeS and enhance Cr(VI) removal from water. Results showed that the MC-FeS composites enhanced the Cr(VI) removal capacity as compared to bare FeS. Further investigation using X-ray photoelectron spectroscopy showed that FeOOH, S8, Cr2O3, Cr2S3, and a Fe(III)-Cr(III) complex were apparently introduced by Cr(VI), Fe(II), and S(-II), respectively. The sorption kinetics could be interpreted using a pseudo-second-order kinetic model, whereas the isotherms were simulated using the RedlichPeterson isotherm model indicating Cr(VI) removal by MC-FeS composites was a hybrid chemical reactionsorption process. In addition, the MC-FeS composite presented high stability against aging and performed well in a long-term reaction system and typical natural water environment. The effective performance of MC-FeS composites shows their great potential in wastewater remediation contaminated by heavy metals.

语种： 英文

作者： Lei, Ming*;Qin, Pufeng;Tie, Baiqing;Mao, Xianqiang

期刊： IOP Conference Series: Earth and Environmental Science,2019年252(5):052061 ISSN：1755-1307

通讯作者： Lei, Ming

作者机构： [Tie, Baiqing; Qin, Pufeng; Lei, Ming] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.;[Mao, Xianqiang] Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China.

通讯机构： [Lei, Ming] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.

会议地点： Xian, PEOPLES R CHINA

会议主办单位： [Lei, Ming;Qin, Pufeng;Tie, Baiqing] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.^[Mao, Xianqiang] Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China.

会议论文集名称： IOP Conference Series-Earth and Environmental Science

关键词： Economic analysis;Environmental engineering;Landforms;Potable water;Water quality;Contingent valuation methods;Hunan province;Hunan province , China;Southern China;Total economic values;Willingness to pay;Surveys

摘要： The water quality plays an important role for residents living in Xiangjiang valley, Hunan province, southern China. In this study, the contingent valuation method (CVM) was used to estimate the value for improving water quality of Xiangjiang for residents who live in in Chang-Zhu-Tan city cluster including Changsha, Zhuzhou and Xiangtan of Xiangjiang valley. Based on pre-interviewed, 220 questionnaires per city were carried out in Chang-Zhu-Tan city cluster between March and August 2010. Among 660 questionnaires, the 623 questionnaires accounting for 94.3% were effectively. About 99.3% respondents thought that Xiangjiang was becoming worse and it was necessary to improve water quality of Xiangjiang for their health, while 0.7% took it easy. About 70.1% residents wanted to support government to take active measures to improve water quality, while, 29.9% refuse to pay due to sex, age, income, education, and occupation of residents in the interview. According to ranges of willingness to pay (WTP) for residents from CNY 2.0 to 50.0 Yuan (from US$ 0.3 to 7.46), the average WTP was calculated CNY 17.18 Yuan (US$ 2.56) per month per household, and the total economic value was CNY 0.848 billion Yuan (US$ 0.127 billion) for Chang-Zhu-Tan city cluster. Residents were willing to contribute a portion of their incomes to improve the quality of drinking water. Among all factors, there were significant relationships between income and sex and WTP (p<0.05), while the relationships between WTP and the education, age, and occupation of resident' s are no-significant. © 2019 IOP Publishing Ltd.

语种： 英文

作者： 杨远;李铁虎;沈光家;罗琳;雷鸣

期刊： 教育教学论坛,2019年(36):9-10 ISSN：1674-9324

作者机构： 湖南农业大学 资源环境学院 省级实践教学中心,湖南 长沙,410128;湘西民族职业技术学院 就业指导中心,湖南 吉首,416000;绥宁县民族中学,湖南 绥宁,422600;[雷鸣; 罗琳; 杨远] 湖南农业大学;[李铁虎] 湘西民族职业技术学院

关键词： 大型精密仪器;高效使用;安全使用

摘要： 文章结合实际工作经验,从大型精密仪器管理、共享、维护及维修、人才培养、实验室人员的安全管理与培训、规范大型仪器精密实验室废弃物处理工作这几个方面为提高大型精密仪器的高效安全使用提出了一些措施,以期更好地服务于高校的教学科研。

语种： 中文