作者：
Ming Lei;Yong Zhang;Sardan Khan;Pu-feng Qin;Bo-han Liao
期刊：
Environmental Monitoring and Assessment,2010年168(1-4):215-222 ISSN：0167-6369
通讯作者：
Liao, B.-H.(liaobh1020@163.com)
作者机构：
[Pu-feng Qin; Yong Zhang; Ming Lei] College of Resource and Environment, Hunan Agricultural University, Changsha 410128, China;[Bo-han Liao] International College, Central South University of Forestry and Technology, Changsha 410004, China;[Ming Lei; Sardan Khan] Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;[Sardan Khan] Department of Environmental Sciences, University of Peshawar, Peshawar 25120, Pakistan
通讯机构：
[Lei, Ming] College of Resource and Environment, Hunan Agricultural University, Changsha, China.
关键词：
Pollution index;Fractionation distribution;Heavy metal;Leleyter and Probst’s sequential extraction;Mobility;Contaminated soils
作者：
Ming Lei;Bo‐han Liao;Qing‐ru Zeng;Pu‐feng Qin;Sardar Khan
期刊：
Communications in Soil Science and Plant Analysis,2008年39(13-14):1963-1978 ISSN：0010-3624
通讯作者：
Liao, BH
作者机构：
[Pu‐feng Qin; Ming Lei; Qing‐ru Zeng] Hunan Agr Univ, Coll Resource & Environm, Changsha, Peoples R China.;[Pu‐feng Qin; Ming Lei] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing, Peoples R China.;[Sardar Khan] Univ Peshawar, Dept Environm Sci, Peshawar, Pakistan.;[Bo‐han Liao] Cent S Univ Forestry & Technol, Int Coll, Changsha 410004, Peoples R China.
通讯机构：
[Liao, BH] Cent S Univ Forestry & Technol, Int Coll, Changsha 410004, Peoples R China.
关键词：
Contaminated soil;disodium ethylenediaminetetraacetic acid (EDTA);fraction distribution;heavy metal
摘要：
: The fraction distributions of heavy metals have attracted more attention because of the relationship between the toxicity and their speciation. Heavy‐metal fraction distributions in soil contaminated with mine tailings (soil A) and in soil irrigated with mine wastewater (soil B), before and after treatment with disodium ethylenediaminetetraacetic acid (EDTA), were analyzed with Tessier's sequential extraction procedures. The total contents of lead (Pb), cadmium (Cd), copper (Cu), and zinc (Zn) exceeded the maximum permissible levels by 5.1, 33.3, 3.1, and 8.0 times in soil A and by 2.6, 12.0, 0.2, and 1.9 times in soil B, respectively. The results showed that both soils had high levels of heavy‐metal pollution. Although the fractions were found in different distribution before extraction, the residual fraction was found to be the predominant fraction of the four heavy metals. There was a small amount of exchangeable fraction of heavy metals in both contaminated soils. Furthermore, in this study, the extraction efficiencies of Pb, Cd, and Cu were higher than those of Zn. After extraction, the concentrations of exchangeable Pb, Cd, Cu, and Zn increased 84.7 mg·kg−1, 0.3 mg·kg−1, 4.1 mg·kg−1, and 39.9 mg·kg−1 in soil A and 48.7 mg·kg−1, 0.6 mg·kg−1, 2.7 mg·kg−1, and 44.1 mg·kg−1 in soil B, respectively. The concentrations of carbonate, iron and manganese oxides, organic matter, and residue of heavy metals decreased. This implies that EDTA increased metal mobility and bioavailability and may lead to groundwater contamination.
作者：
Zeng Min;Liao Bohan;Lei Ming;Zhang Yong;Zeng Qingru;Ouyang Bin
期刊：
JOURNAL OF ENVIRONMENTAL SCIENCES,2008年20(1):75-79 ISSN：1001-0742
通讯作者：
Liao, BH
作者机构：
[Liao Bohan] International College, Central South University of Forestry and Technology, Changsha, 410004, China;[Ouyang Bin; Zeng Qingru; Zhang Yong; Lei Ming; Zeng Min] College of Biological Science and Technology, Hunan Agricultural University, Changsha, 410128, China;[Zeng Min] College of Resources and Environment, Central South University of Forestry and Technology, Changsha, 410004, China
通讯机构：
[Zeng, Min] College of Resources and Environment, Central South University of Forestry and Technology, Changsha 410004, China.
作者：
ZHANG Yong;LIAO Bo-Han;ZENG Qing-Ru;ZENG Min;LEI Ming
期刊：
PEDOSPHERE,2008年18(02):242-247 ISSN：1002-0160
通讯作者：
Liao, BH
作者机构：
[LIAO Bo-Han; ZENG Min] International College，Central South University of Forestry and Technology;[ZHANG Yong; ZENG Qing-Ru; LEI Ming] College of Resources and Environment, Hunan Agricultural University
通讯机构：
[Liao, BH] Cent S Univ Forestry & Technol, Int Coll, Changsha 410004, Peoples R China.
摘要：
A pot experiment was conducted to study the effect of an anionic surfactant linear alkylbenzene sulfonate （LAS） application on cadmium （Cd） fractions in soils and Cd distribution in different tissues of soybean （Glycine max） plants as well as soil pH. Soil samples were treated with three levels of Cd （0, 5, and 10 mg kg~(-1)） and five levels of LAS （0, 5, 15, 50, and 100 mg L~(-1)）. Results indicated that compared to the control soils （no Cd and no LAS treatment）, soil pH increased and available Cd decreased in the soil treated with external Cd and watered with LAS solutions. Meanwhile, soil exchangeable Cd and Cd bound to carbonates decreased; Cd bound to amorphous iron and manganese oxides and Cd bound to organic matter increased. In addition, LAS application could reduce enrichment of Cd in soybean plants, resulting in decreased Cd in the soybean plants. Thus, suitable LAS application could decrease bioavailability and mobility of soil Cd.
