作者： 陈曼乐;陈秋月;杨丽华;蒋方舟;陈恒辉;...

期刊： 湖南农业科学,2020年(10):92-97 ISSN：1006-060X

作者机构： 湖南农业大学资源环境学院,湖南 长沙 410128;湖南农业大学农业环境 保护研究所,湖南 长沙 410128;[龚道新; 杨丽华; 蒋方舟; 陈恒辉; 陈秋月; 陈曼乐] 湖南农业大学

关键词： 联苯菊酯;噻虫胺;甘蓝;残留;膳食风险评估

摘要： 基于液相色谱质谱联用仪,建立了联苯菊酯和噻虫胺的定性定量检测分析方法,以研究1％联苯菊酯·噻虫胺颗粒剂在甘蓝中的残留行为,并根据残留检测结果,结合我国农药登记情况和居民的人均膳食结构,评估了联苯菊酯和噻虫胺的膳食摄入风险.结果表明:研究建立的联苯菊酯和噻虫胺检测方法,其线性相关系数(R2)均不低于0.997,在0.02、0.20、1.00 mg/kg的添加水平下,联苯菊酯在甘蓝中回收率在70％～110％,相对标准偏差为10％～17％;在0.05、0.50、2.00 mg/kg的添加水平下,噻虫胺在甘蓝中回收率在93％～108％,相对标准偏差为1％～6％;均满足试验要求.按照推荐施药方式药剂有效成分浓度为600 g/hm2(制剂用量为60 kg/hm2),施药1次,联苯菊酯在收获期甘蓝中的最终残留量均小于0.02 mg/kg,噻虫胺在收获期甘蓝中的最终残留量均小于0.05 mg/kg,未超过我国规定的MRL值(分别为0.20和0.50 mg/kg).因此,甘蓝中的联苯菊酯和噻虫胺残留对一般人群健康不会产生不可接受的风险.

语种： 中文

作者： Zheng, Jiangfu;Yang, Lihua;Deng, Yaocheng*;Zhang, Chenyu;Zhang, Yang;...

期刊： Critical Reviews in Environmental Science and Technology,2020年50(13):1384-1409 ISSN：1064-3389

通讯作者： Deng, Yaocheng;Gong, Daoxin

作者机构： [Zhang, Yang; Liao, Chanjuan; Deng, Yaocheng; Gong, Daoxin; Yang, Lihua; Xiong, Sheng; Zhang, Chenyu; Zhao, Jia; Gong, DX; Zheng, Jiangfu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Zhang, Yang; Liao, Chanjuan; Deng, Yaocheng; Gong, Daoxin; Yang, Lihua; Xiong, Sheng; Zhang, Chenyu; Zhao, Jia; Zheng, Jiangfu] Hunan Agr Univ, Inst Agr Environm Protect, Changsha, Hunan, Peoples R China.;[Ding, Chunxia] Hunan Agr Univ, Coll Sci, Changsha, Hunan, Peoples R China.

通讯机构： [Deng, YC; Gong, DX] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

关键词： Environmental impact;environmental pollutants;organic germanium;recycling and removal technology;toxicity of heavy metal

摘要： Germanium (Ge) is a widely distributed but rare element on earth. Organic germanium is the most widely used form of germanium. Compared to the common metal (mercury, cadmium, lead, etc.), organic germanium is much less toxic to humans than others. Since its discovery in 1886, organic germanium and relative compounds have caused many medically related problems across the globe. In most cases, organic germanium exists in the natural environment in an oxidation state. The size of organic germanium and its compounds is extremely small in natural water, for which organic germanium can easily enter the environment through the flow of water. Because organic germanium owns unique chemical properties and is potentially ecotoxic, so there are have special environmental problems. Considering the fact that people does not know much about organic germanium, along with the lack of systematic research, this paper starts with a brief introduction of the chemical composition, distribution, and threat to human health of organic germanium. Then, the new and common technologies for the recovery and removal of germanium as referred to in various literatures introduced and with detail description of their performance, advantages, disadvantages, and applications. It is of great significance for people to understand organic germanium and its pollution control. © 2019, © 2019 Taylor & Francis Group, LLC.

语种： 英文

作者： 邓小岚;龚道新;王寒;熊胜;罗傲;...

期刊： 精细化工中间体,2020年50(4):69-72 ISSN：1009-9212

作者机构： 湖南农业大学资源环境学院,湖南长沙410128;湖南农业大学农业环境保护研究所,湖南长沙410128;[龚道新; 张宸宇; 罗傲; 王寒; 邓小岚; 熊胜] 湖南农业大学

关键词： 虱螨脲;顺式氯氰菊酯;甘蓝;高效液相色谱

摘要： 建立了高效液相色谱法同时检测甘蓝中虱螨脲和顺式氯氰菊酯残留的方法.使用乙腈提取,高效液相色谱检测,外标法定量.方法 的线性范围为0.05～5.00 mg· L-1,虱螨脲相关系数为0.999 4,顺式氯氰菊酯相关系数为0.999 4.在0.05、0.10、1.00、5.00 mg· kg-14个添加水平下,甘蓝中虱螨脲和顺式氯氰菊酯的平均回收率分别为87.3％～101.9％和89.4％～105.2％,相对标准偏差分别为2.61％～9.16％和3.35％～8.57％,定量限均为0.05 mg· kg-1.该方法可用于同时检测甘蓝虱螨脲和顺式氯氰菊酯的残留量.

语种： 中文

作者： 罗傲;陈恒辉;熊胜;张宸宇;邓小岚;...

期刊： 精细化工中间体,2020年50(3):77-80 ISSN：1009-9212

作者机构： 湖南农业大学资源环境学院,湖南长沙410128;湖南农业大学农业环境保护研究所,湖南长沙410128;[龚道新; 张宸宇; 罗傲; 陈恒辉; 邓小岚; 熊胜] 湖南农业大学

关键词： 超高效液相色谱-串联质谱(UPLC-MS/MS);水稻;噁唑酰草胺

摘要： 建立了超高效液相色谱-串联质谱（UPLC-MS/MS）快速检测水稻植株、稻壳、糙米中噁唑酰草胺及其代谢物（HFMPA、 HPFMPA、 6-CBO）残留量的方法。样品用乙腈提取PSA净化处理,过0.22μm有机系滤膜后,以乙腈-甲酸水为流动相,在电喷雾正离子模式下以多反应监测（MRM）模式测定,用标准溶液外标法定量。结果表明:方法的线性范围为0.05～1.00 mg·kg-1,决定系数（R2）>0.99;在0.05、 0.50、1.00 mg·kg-13个添加水平下,该方法平均回收率为82%～109%,相对标准偏差为2%～8%,定量限为0.01 mg·kg-1。该处理方法操作简便快速、准确率高、灵敏度高,适用于实际操作,是水稻中噁唑酰草胺及其代谢物（HFMPA、 HPFMPA、 6-CBO）残留检测较理想的办法。

语种： 中文

作者： 陈燕;蔡灵;杨丽华;徐慧;龚道新

期刊： 农药,2020年59(3):209-214,222 ISSN：1006-0413

作者机构： 湖南农业大学资源环境学院,长沙410128;农业环境保护研究所,长沙410128;[龚道新; 杨丽华; 蔡灵; 陈燕; 徐慧] 湖南农业大学

关键词： 嘧菌酯;戊唑醇;水稻;消解动态;膳食风险评估

摘要： [目的]为评价嘧菌酯和戊唑醇在水稻中的残留消解行为和产生的膳食摄入风险。[方法]采用高效液相色谱-串联质谱仪联用(HPLC-MS/MS)同时检测嘧菌酯和戊唑醇在水稻糙米、稻壳和植株中残留的分析方法。样品经乙腈提取、PSA分散固相萃取净化,高效液相色谱-串联质谱仪联用检测,外标法定量。[结果]嘧菌酯和戊唑醇在糙米、稻壳和植株中的定量限(LOQ)均为0.05 mg/kg。在0.05~5.00 mg/kg添加水平下,嘧菌酯和戊唑醇的平均回收率在70%~110%之间,相对标准偏差(RSD)在5%~15%之间。嘧菌酯在稻壳中的消解符合一级动力学方程,半衰期为3.45~5.92 d,戊唑醇在稻壳中的消解符合一级动力学方程,半衰期为7.37~11.0 d,距末次施药后21 d嘧菌酯和戊唑醇在糙米中的最高残留量分别为0.05、0.1668 mg/kg,低于我国《食品农药最大残留限量》(GB 2763—2016)中规定的糙米中嘧菌酯和戊唑醇最大残留限量值(均为0.5 mg/kg)。[结论]水稻中的嘧菌酯和戊唑醇含量对一般人群健康不会产生不可接受的风险。

语种： 中文

作者： Zhang, Chenyu;Deng, Yaocheng*;Zheng, Jiangfu;Zhang, Yang;Yang, Lihua;...

期刊： TRAC-TRENDS IN ANALYTICAL CHEMISTRY,2019年118:517-537 ISSN：0165-9936

通讯作者： Deng, Yaocheng;Gong, Daoxin

作者机构： [Zhang, Yang; Liao, Chanjuan; Deng, Yaocheng; Su, Long; Gong, Daoxin; Yang, Lihua; Zhou, Yaoyu; Zhang, Chenyu; Luo, Ao; Gong, DX; Zheng, Jiangfu; Chen, Ling] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Zhang, Yang; Liao, Chanjuan; Deng, Yaocheng; Su, Long; Gong, Daoxin; Yang, Lihua; Zhang, Chenyu; Luo, Ao; Zheng, Jiangfu; Chen, Ling] Hunan Agr Univ, Inst Agr Environm Protect, Changsha 410128, Hunan, Peoples R China.

通讯机构： [Deng, YC; Gong, DX] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

关键词： Antibiotic residues;Food safety;Modification;QuEChERS;Sample pretreatment

摘要： Antibiotic residues in food should be concerned seriously because they constitute potential threats to human health. The rapid and accurate determination of antibiotic residues in food must be a tough challenge due to the large number of interfering substances in food matrices. However, the traditional sample preparation methods are not only time-consuming and laborious, but also require many toxic organic solvents. This is why new preparation methods need to be developed to meet new analysis needs. A quick, easy, cheap, effective, rugged, and safe preparation technique, known as QuEChERS, was introduced in 2003. As its name implies, this technique, combined with LC or GC tandem mass spectrometry, can effectively separate multiple complex compounds in a short time. Initially, QuEChERS was widely used to analyze pesticide residues in food. Nevertheless, more and more researchers began to apply the QuEChERS technique to extract other compounds with various complex matrices in recent years, and the advantages of high efficiency and good results has once again proved the potential of this technique. In this paper, the development and application of QuEChERS for antibiotic residues in food were reviewed, and the research progress on modification and optimization of the QuEChERS methodology in sample treatment, extraction and purification is summarized in detail. (C) 2019 Elsevier B.V. All rights reserved.

语种： 英文

作者： Zeng, Rongying;Tang, Wenqing*;Ding, Chunxia;Yang, Lihua;Gong, Daoxin*;...

期刊： Journal of Solid State Chemistry,2019年280:120960 ISSN：0022-4596

通讯作者： Tang, Wenqing;Gong, Daoxin

作者机构： [Tang, Wenqing; Zeng, Rongying; Kang, Zhuo] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat, Coll Hunan Prov, Hengyang 421008, Peoples R China.;[Ding, Chunxia; Gong, Daoxin; Yang, Lihua; Zeng, Rongying] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[He, Zhimin; Wu, Yuming; Zeng, Rongying] Hengyang Normal Univ, Nanyue Coll, Hengyang 421008, Peoples R China.;[Tang, Wenqing] Xiangtan Univ, Coll Environm & Resources, Xiangtan 411105, Hunan, Peoples R China.

通讯机构： [Tang, Wenqing; Gong, Daoxin] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat, Coll Hunan Prov, Hengyang 421008, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

关键词： Adsorption isotherms;Chemicals removal (water treatment);Dyes;Heavy metals;Hydroxyapatite;Integral equations;Ion exchange;Metal ions;Precipitation (chemical);Silicates;Sodium compounds;Stability;Adsorption mechanism;Cadmium ions;Langmuir adsorption model;Lead ions;Pseudo second order kinetics;Sonochemistry coprecipitation;Substituted hydroxyapatites;Thermodynamic parameter;Adsorption

摘要： Sodium, silicate and carbonate ions co-substituted hydroxyapatite adsorbent (Na-SiCHAP) was prepared by sonochemistry coprecipitation. The effect of a variety of parameters on the adsorption of Pb2+ and Cd2+ by Na-SiCHAP were performed. The adsorption process of heavy metal ions was found to follow the pseudo-second-order kinetic equation and Langmuir adsorption model. The maximum absorption capacity (Qm) of Na-SiCHAP for Pb2+ and Cd2+ ions in 303 K were 698.68 and 129.60 mg g−1 according to the Langmuir adsorption model, respectively. The thermodynamic parameters (ΔG0 <0, ΔS0 >0, ΔH0 >22kJ·mol-1) indicated that the absorption of Pb2+ and Cd2+ on the Na-SiCHAP was spontaneous and endothermic, and the Na-SiCHAP adsorbed mainly via chemical adsorption. Ion exchange of Pb2+ and Cd2+ for Ca2+ and Na+ was one of the principal mechanisms, followed by precipitation and electrostatic interactions. Furthermore, the well stability properties of the Na-SiCHAP adsorbent were confirmed by recycling assays. These data indicate that Na-SiCHAP may be a good adsorbent for the rapid removal of heavy metal ions from aqueous solutions. © 2019 Elsevier Inc.

语种： 英文

作者： 陈恒辉;龚道新;王寒;杨丽华;熊胜;...

期刊： 农药,2019年58(2):112-114,124 ISSN：1006-0413

作者机构： 湖南农业大学资源环境学院,长沙,410128;湖南农业大学资源环境学院,长沙410128;湖南农业大学农业环境保护研究所,长沙410128;[杨丽华; 龚道新; 徐钰哲; 陈恒辉; 王寒; 熊胜] 湖南农业大学

关键词： 氟吡菌胺;吡唑醚菌酯;葡萄;土壤;高效液相色谱

摘要： [目的]建立高效液相色谱法同时检测葡萄、土壤中氟吡菌胺和吡唑醚菌酯残留的方法。[方法葡萄和土壤样品均用乙腈提取,提取液用PSA及C_(18)吸附剂分散固相萃取净化,高效液相色谱检测,外标法定量。[结果]方法的线性范围为0.05~5.00 mg/L,氟吡菌胺相关系数为1.0000,吡唑醚菌酯相关系数为0.9999;在0.05、0.50、2.00 mg/kg 3个添加水平下,葡萄中氟吡菌胺和吡唑醚菌酯的平均回收率分别为86.7%~97.8%和90.6%~95.6%,相对标准偏差分别为2.55%~8.49%和2.14%~7.80%,土壤中氟吡菌胺和吡唑醚菌酯的平均回收率分别为79.1%~93.6%和83.4%~98.9%,相对标准偏差分别为5.29%~6.78%、1.69%~7.34%;在上述检测条件下,氟吡菌胺的最小检出量(LOD)为0.1 ng,在葡萄和土壤中的最低检测浓度(LOQ)均为0.05 mg/kg;吡唑醚菌酯的最小检出量(LOD)为0.1 ng,在葡萄和土壤中的最低检测浓度(LOQ)均为0.05 mg/kg。[结论]该方法具有简单可靠,分析样品时间短,准确度、精密度和灵敏度符合农药残留分析要求等特点,可以用于同时检测葡萄、土壤上氟吡菌胺和吡唑醚菌酯的残留量。

语种： 中文

作者： 罗傲;陈恒辉;熊胜;张宸宇;邓小岚;...

期刊： 精细化工中间体,2019年49(05):68-72 ISSN：1009-9212

作者机构： 湖南农业大学资源环境学院,湖南长沙410128;湖南农业大学农业环境保护研究所,湖南长沙410128;[龚道新; 张宸宇; 罗傲; 陈恒辉; 邓小岚; 熊胜] 湖南农业大学

关键词： 超高效液相色谱-串联质谱（UPLC-MS/MS）;葡萄;吡唑醚菌酯;氟吡菌胺;2,6-二氯苯甲酰胺（BAM）

摘要： 建立了超高效液相色谱-串联质谱(UPLC-MS/MS)快速检测葡萄中吡唑醚菌酯、氟吡菌胺及其代谢物2,6-二氯苯甲酰胺(BAM)残留量的方法.葡萄样品用乙腈提取,过0.22 μm有机系滤膜后,在电喷雾正离子模式下以多反应监测(MRM)模式测定,基质校正标准溶液外标法定量.结果 表明:方法的线性范围为0.05～2.00 mg· kg-1,决定系数(r)＞0.99;在0.05 mg· kg-1、0.50 mg·kg-1和2.00 mg·kg-1,3个添加水平下,吡唑醚菌酯、氟吡菌胺和2,6-二氯苯甲酰胺(BAM)的平均回收率为91％～97％、91％～93％和94％～100％,相对标准偏差为4％～7％、1％～3％和2％～3％,定量限为0.05 mg· kg-1.该处理方法准确、简单、快速,是葡萄中吡唑醚菌酯、氟吡菌胺和BAM残留检测理想的办法.

语种： 中文

作者： 宋天玮;熊胜;陈恒辉;徐钰哲;陈玲;...

期刊： 农药,2019年58(4):285-287 ISSN：1006-0413

作者机构： 湖南农业大学 资源环境学院,长沙,410128;[龚道新; 陈玲; 宋天玮; 徐钰哲; 陈恒辉; 熊胜] 湖南农业大学

关键词： 醚菌酯;噻呋酰胺;小麦;气相色谱;农药残留

摘要： [目的]使用气相色谱检测小麦中醚菌酯和噻呋酰胺的残留,建立相应的分析方法。[方法】小麦籽粒及小麦秆经过乙腈提取,过层柱净化,用0.22 µm滤膜过滤,待GC-ECD检测。[结果】在0.01、0.05、0.5mg/kg 3个添加水平下,醚菌酯在小麦籽中的添加回收率为82.5%~114.6%,相对标准偏差(RSD)为3.88%~4.65%;在小麦秆中的添加回收率为82.4%~108.8%,相对标准偏差(RSD)为5.11%~5.34% ;噻呋酰胺在小麦籽中的添加回收率为88.1%~117.7%,相对标准偏差(RSD)为3.93%~8.88% ;在小麦秆中的添加回收率为90.3%~116.4% ;相对标准偏差(RSD)为6.11%~ 8.10%.[结论]由数据可得醚菌酯和噻呋酰胺在0.01~5.0mg/L范围内都呈现出良好的线性关系,2种药的最低检测浓度都是0.01 mg/kg。该方法简单易操作、灵敏度高、数据可靠,可应用于小麦中醚菌酯和噻呋酰胺残留量的测定。

语种： 中文

作者： 杨建;康澜;郭延珍;罗丹;李俊杰;...

期刊： 安全与环境学报,2019年19(2):628-634 ISSN：1009-6094

作者机构： 湖南农业大学资源环境学院,长沙,410128;湖南农业大学资源环境学院,长沙410128;湖南农业大学农业环境保护研究所,长沙410128;[龚道新; 康澜; 杨建; 罗丹; 李俊杰; 苏龙; 郭延珍] 湖南农业大学

关键词： 环境工程学;马铃薯;土壤;百菌清;最终残留;消解动态

摘要： 为评价百菌清在马铃薯上的使用安全性及土壤中的消解动态残留,建立了百菌清在马铃薯及土壤中的残留分析方法,2016—2017年在湖南长沙和河北石家庄两地进行了720 g/L百菌清悬浮剂在马铃薯上的施用,分析了其有效成分百菌清在马铃薯上的消解动态和最终残留。马铃薯、土壤样品用体积比为1∶1的丙酮-乙腈的混合液振荡提取,提取液经盐析、浓缩后用乙腈定容,气相色谱法检测。结果表明,在添加水平为0. 02 mg/kg、0. 20 mg/kg和2. 00 mg/kg时,马铃薯中百菌清残留量检测方法的添加回收率为81. 1%~110. 5%,相对标准偏差(RSD)为4. 4%~11. 9%;土壤中百菌清残留量检测方法的添加回收率为82. 4%~111. 6%,RSD为6. 3%~10. 9%。百菌清在马铃薯上以高剂量(3 240. 0 g/hm~2)、低剂量(2 160. 0 g/hm~2) 2个剂量分别施药3次和4次,最后一次施药后7 d、14 d、21 d的马铃薯的最大残留量均值分别为0. 084 mg/kg、0. 026 mg/kg、0. 020 mg/kg。百菌清在土壤中的残留消解动态规律符合一级动力学反应模型,其消解半衰期为3. 63~8. 35 d,在土壤环境中较易降解。

语种： 中文

作者： 陈玲;龚道新;王寒;杨丽华;苏龙

期刊： 农药,2019年58(6):448-450 ISSN：1006-0413

作者机构： 湖南农业大学资源环境学院,长沙410128;湖南农业大学农业环境保护研究所,长沙410128;[杨丽华; 龚道新; 陈玲; 苏龙; 王寒] 湖南农业大学

关键词： 噻虫胺;吡蚜酮;柑橘;土壤;残留

摘要： [目的]建立了柑橘和土壤中吡蚜酮、噻虫胺的高效液相色谱-串联质谱(HPLC-MS/MS)同时检测分析方法。 [方法]采用外标法进行定量,柑橘和土壤中的吡蚜酮和噻虫胺先经0.1%氨水乙腈溶液振荡提取,然后采用中性氧化铝、无水硫酸钠净化,最后经HPLC-MS/MS检测。[结果]在0.01、0.05、0.1、0.5、1.0 mg/kg标准工作溶液浓度下,吡蚜酮相关系数0.999,噻虫胺相关系数0.9999;在0.05、0.5、1 mg/kg添加水平下,吡蚜酮在土壤、果肉以及全果中的平均回收率为89%~108%,其相对标准偏差(RSD)在5%~20%范围内;噻虫胺的平均回收率达到92%~109%,其相对标准偏差为3%~16%。吡蚜酮与噻虫胺在试验中的检出限(LOD)均为0.01 mg/kg,其定量限(LOQ)均为0.05 mg/kg。 [结论]该方法精准快捷,重复性、灵敏度均符合农药残留分析要求,可以用于实际生产中同时检测柑橘、土壤基质上吡蚜酮和噻虫胺的残留量。

语种： 中文

作者： Zhong, Mei-e;Sun, Jingchun;Guan, Jindiao;Liang, Ce;Yu, Shuang;...

期刊： Journal of Power Sources,2019年412:134-141 ISSN：0378-7753

通讯作者： Zhou, Nan;Gong, Daoxin

作者机构： [Zhong, Mei-e; Sun, Jingchun; Yu, Shuang; Zhou, Nan; Guan, Jindiao; Liang, Ce] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.;[Xiao, Zhubing] Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China.;[Gong, Daoxin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

通讯机构： [Zhou, Nan; Gong, Daoxin] H;Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

关键词： Cathodes;Costs;Graphene;Lithium batteries;Lithium compounds;Polysulfides;Sulfur compounds;Sulfuric acid;Energy density;High energy densities;Mediator;Shuttle effect;Solid discharge;Stable cycling;Sulfur cathodes;Sulfur loading;Lithium sulfur batteries

摘要： Lithium-sulfur batteries hold great promise for large-scale energy storage owing to their high theoretical energy density and low cost. However, the insulating nature of sulfur and shuttle effect of polysulfides result in low sulfur utilization and rapid capacity decay. Here, sulfonated graphene is fabricated using the low-cost diluted sulfuric acid as sulfonated reagent, for constructing the freestanding sulfur cathode. It is confirmed that the sulfo groups grafted on graphene serve as mediators to react with long-chain polysulfides by forming the thiosulfate/polythionate intermediates, and facilitate the conversion of long-chain polysulfides into short-chain species and solid discharge products. Crucially, the freestanding cathode with sulfur loading of 8.2 mg cm−2 exhibits an areal capacity of 7.57 mA h cm−2 and stable cycling over 100 cycles at 0.1 C. © 2018

语种： 英文

作者： Zhong, Mei-e;Guan, Jindiao;Sun, Jingchun;Guo, Hui;Xiao, Zhubing;...

期刊： Electrochimica Acta,2019年299:600-609 ISSN：0013-4686

通讯作者： Gui, Qingwen

作者机构： [Zhong, Mei-e; Sun, Jingchun; Guo, Hui; Gui, Qingwen; Zhou, Nan; Guan, Jindiao] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.;[Xiao, Zhubing] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China.;[Gong, Daoxin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

通讯机构： [Gui, Qingwen] H;Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.

关键词： Lithium-sulfur batteries;Tobacco stem;Nanodots-decorated;Alveolate;Tridoped

摘要： Rechargeable lithium-sulfur (Li-S) batteries are a significant energy-storage device owing to their eco-friendliness and high theoretical energy density. However, the shuttle effect of soluble polysulfides as well as the slow redox kinetics constrains the development of Li-S batteries. Herein, carbon nanodots-decorated alveolate N, O, S tridoped hierarchical porous carbon (a-NOSPC) material is synthesized via facile pyrolysis of tobacco stem. The coexistence of micropores, mesopores, and macropore in the hierarchical porous carbon are beneficial for physical accommodating/immobilizing active materials sulfur and rapid charge/ion transfer. Meanwhile, the N, O, S dopants provide rich electrocatalytic active site in chemical binding of polysulfides and their accelerated redox kinetics, thus guaranteeing high utilization on active materials. The resultant a-NOSPC/S cathode with an 2.7 mg cm(-2) areal sulfur loading delivers a high reversible areal capacity of 2.90mAh cm(-2) at 0.1 C, maintaining 2.01mAh cm(-2) over 100 cycles, which is obviously superior to the most reported biochar-based electrodes. Our results provide an appealing avenue to the design of multifunctional sulfur host for advanced Li-S batteries. (C) 2019 Elsevier Ltd. All rights reserved.

语种： 英文

作者： Ding, Chunxia;Xiao, Sijia;Lin, Yingjun;Yu, Peng;Zhong, Mei-e;...

期刊： Chemical Engineering Journal,2019年360:104-114 ISSN：1385-8947

通讯作者： Deng, Yaocheng;Gong, Daoxin

作者机构： [Yu, Peng; Ding, Chunxia; Lin, Yingjun; Xiao, Sijia; Zhong, Mei-e] Hunan Agr Univ, Coll Sci, Changsha 410082, Hunan, Peoples R China.;[Su, Long; Yang, Lihua; Zhou, Yaoyu; Deng, Yaocheng; Gong, Daoxin; Liao, Chanjuan; Wang, Han] Hunan Agr Univ, Coll Resource & Environm, Changsha 410082, Hunan, Peoples R China.

通讯机构： [Deng, YC; Gong, DX] H;Hunan Agr Univ, Coll Resource & Environm, Changsha 410082, Hunan, Peoples R China.

关键词： Attapulgite;Peroxymonosulfate;Quinclorac;Removal;Zero valent iron

摘要： A nanocomposite of nZVI/ATP with nanoscale zero-valent iron(nZVI) supported on attapulgite(ATP) was synthesized for activating peroxymonosulfate (PMS) to generate reactive free radicals for quinclorac removal. The microstructures of nZVI/ATP were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, Scanning electron microscopy, and N2 adsorption-desorption. The effect factors of nZVI/ATP-PMS system on quinclorac degradation were tested, including PMS dosage, nZVI/ATP dosage, initial solution pH, initial quinclorac concentration, common existing ions and temperature. Quinclorac degradation products were identified by LC-MS/MS, and the possible degradation mechanism was proposed. The results showed that nanoscale zero-valent iron (nZVI) was evenly dispersed on the attapulgite surface, which effectively prevents the agglomeration and oxidation of nZVI and improves its catalytic performance. The removal efficiency of quinclorac was 97.36%, in an hour using 0.5 g/L nZVI/ATP3 and 10 mM PMS. The total organic carbon was removed as high as 79.97%. Quinclorac was degraded into five major products by chemical reactions of hydroxyl substitution, oxidation and ring-cleavage. Finally, most of the degradation products were mineralized into inorganics such as CO2, H2O or something else. It turned out that nZVI/ATP-PMS was a highly efficient catalytic degradation system for removing quinclorac residues in aqueous solution. © 2018 Elsevier B.V.

语种： 英文

作者： 蔡达夫;徐钰哲;熊胜;杨丽华;龚道新

期刊： 作物研究,2018年32(6):521-526 ISSN：1001-5280

作者机构： 湖南农业大学农业环境保护研究所,长沙410128;湖南农业大学资源环境学院,长沙410128;长沙市环境科学研究与信息中心,湖南长沙410001;[龚道新; 杨丽华; 蔡达夫; 徐钰哲; 熊胜] 湖南农业大学

关键词： 农药;稻田;消解;残留;呋虫胺

摘要： 为了解农药呋虫胺在稻田中施用以后其有效成分呋虫胺在稻田环境中的残留消解行为,借助HPLC检测技术,通过添加回收率实验建立了呋虫胺在稻田水、稻田土壤和水稻植株样品中的残留检测方法。结果表明:呋虫胺在稻田水、稻田土壤和水稻植株中的平均回收率为91. 3%～96. 5%,相对标准偏差为1. 28%～3. 60%,呋虫胺的最小检出量为1. 0×10-9g,在稻田水中的最低检出浓度为0. 05 mg/L,在稻田土壤和水稻植株中的最低检出浓度均为0. 05 mg/kg。在稻田水中的消解半衰期为1. 22～3. 58 d,平均2. 31 d,在稻田土壤中的消解半衰期为3. 77～14. 74 d,平均8. 18 d,在水稻植株中的消解半衰期为1. 81～3. 71 d,平均3. 09 d。

语种： 中文

作者： Xiong, Sheng;Deng, Yaocheng;Zhou, Yaoyu*;Gong, Daoxin*;Xu, Yuzhe;...

期刊： ANALYTICAL METHODS,2018年10(46):5468-5479 ISSN：1759-9660

通讯作者： Zhou, Yaoyu;Gong, Daoxin

作者机构： [Chen, Henghui; Yang, Lihua; Jiang, Ziyan; Zhou, Yaoyu; Song, Tianwei; Xu, Yuzhe; Deng, Yaocheng; Gong, Daoxin; Deng, Xiaolan; Xiong, Sheng; Luo, Ao; Zhang, Chenyu; Zhou, YY; Gong, DX; Chen, Ling] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

通讯机构： [Zhou, YY; Gong, DX] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

摘要： Organophosphorus pesticides analysis has become an increasingly significant research area due to their widespread application and contamination of the environment. With the worsening of environmental contamination, the control of pesticides is important to both human health and environment protection. Distinct from traditional methods of pesticides detection, application of electrochemical biosensors based on enzyme-functionalized nanostructures in the field of pesticides analysis is promising. This review mainly introduces the recent achievements and problems in biosensors based on enzyme-functionalized nanostructures for organophosphorus pesticides detection, such as efficiency and high sensitivity, and meanwhile the problem of practicability is also discussed. © The Royal Society of Chemistry.

语种： 英文

作者： 廖婵娟;龚道新;罗惠莉;苏龙;赵佳;...

期刊： 广州化工,2018年46(5):137-138 ISSN：1001-9677

作者机构： 湖南农业大学资源环境学院,湖南农业大学农业环境保护研究所,湖南 长沙 410128;[龚道新; 赵佳; 苏龙; 罗惠莉; 王寒; 廖婵娟] 湖南农业大学

关键词： 安全工程;化工原理;教学主体;单元操作;化工安全

摘要： 根据安全工程专业的培养目标和专业性质,《化工原理》在教学中课时量少,学生学习难度大。以全面提升安全工程专业《化工原理》课程的教与学的质量和效果为出发点,以化工安全为教学延伸,分别从教学双主体、典型单元操作深度讲解、教学手段更新、实践上的验证和贯穿安全理念的角度,深入探讨了少学时化工原理课程的教学改革,为本专业后续化工安全专业知识的教与学打下坚实基础。

语种： 中文

作者： Zeng, Rongying;Tang, Wenqing*;Liu, Xing;Ding, Chunxia;Gong, Daoxin*

期刊： ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,2018年37(6):2073-2081 ISSN：1944-7442

通讯作者： Gong, Daoxin;Tang, Wenqing

作者机构： [Ding, Chunxia; Gong, Daoxin; Zeng, Rongying] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Liu, Xing; Tang, Wenqing; Zeng, Rongying] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Liu, Xing; Tang, Wenqing; Zeng, Rongying] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat Coll Hunan Prov, Hengyang 421008, Peoples R China.

通讯机构： [Gong, Daoxin; Tang, Wenqing] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat Coll Hunan Prov, Hengyang 421008, Peoples R China.

关键词： silicon-substituted carbonate hydroxyapatite;Zn2+;adsorption;removal efficiency

摘要： A kind of low-cost silicon-substituted carbonate hydroxyapatite (Si-CHAP) powder was successfully fabricated by using eggshell powder, H3PO4, Ca(OH)2, Na2SiO3, and Na2CO3 under sonochemistry coprecipitation condition. Si-CHAP could serve as an ideal adsorbent to remove zinc ion (Zn2+) from aqueous solution. Under the optimized conditions, the removal efficiency of Zn2+ in solution by Si-CHAP could reach to 96.2%. The adsorption mechanism was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Notably, the adsorption process followed the Langmuir isotherm and pseudo-second-order model, and the saturation adsorption capacities were calculated to be 102.0, 103.1, and 105.3mgg−1 at 293, 303, and 313K, respectively. Thermodynamic studies indicated that the adsorption of Zn2+ by Si-CHAP is endothermic. Mechanism studies revealed that the dominate mechanism was chemical adsorption. These results showed that Si-CHAP is an effective adsorbent for the removal of Zn2+ from aqueous solution, and thus providing a good method to treat Zn2+ in the waste water. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1901–1907, 2018. © 2018 American Institute of Chemical Engineers

语种： 英文

作者： 李锦桂;陈恒辉;陈玲;龚道新

期刊： 湖南农业科学,2018年(12):55-59 ISSN：1006-060X

作者机构： 湖南农业大学农业环境保护研究所,湖南 长沙 410128;湖南农业大学资源环境学院,湖南 长沙 410128;湖南安全技术职业学院安全保障学院,湖南 长沙 410151;[龚道新; 陈玲; 李锦桂; 陈恒辉] 湖南农业大学

关键词： 噁唑菌酮;代森锰锌;番茄;土壤;消解动态

摘要： 为研究复配试剂噁唑菌酮和代森锰锌可分散粒剂在番茄和土壤中施用后的食品安全性和环境归宿行为,将杀菌剂施用于番茄植株农药残留消解动态试验小区(15 m2)和土壤动态试验小区(20 m2),结合HPLC和GC检测技术,通过添加回收建立噁唑菌酮、代森锰锌在番茄和土壤基质中的残留检测方法.结果表明:噁唑菌酮在番茄和土壤中的最小检出量分别为1×10-9 g和8×10-9 g,最低检出浓度均为0.05 mg/kg,代森锰锌的最小检出量为3.5×10-11g,最低检出浓度为0.035 mg/kg,平均回收率(n=5)为78.01％ ～106.03％,相对标准偏差平均值均小于5.22％.该方法重复性好,准确度高,试验结果表明番茄中噁唑菌酮、代森锰锌的半衰期为1.61～14.43 d,土壤中其半衰期为2.64～22.35 d,其消解规律遵循一级化学反应动力学方程:Ct=C0e-kt.

语种： 中文