| Chemical fractionations and bioavailability of cadmium and zinc to cole （Brassica campestris L.） grown in the multi-metals contaminated oasis soil, northwest of China |
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| 引用本文： | Yiming Yang,Zhongren Nan,Zhuanjun Zhao,Shengli Wang,Zhaowei Wang,Xia Wang. Chemical fractionations and bioavailability of cadmium and zinc to cole （Brassica campestris L.） grown in the multi-metals contaminated oasis soil, northwest of China[J]. 环境科学学报(英文版), 2011, 23(2): 275-281. DOI: 10.1016/S1001-0742(10)60403-2 |
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| 作者姓名： | Yiming Yang Zhongren Nan Zhuanjun Zhao Shengli Wang Zhaowei Wang Xia Wang |
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| 作者单位： | 1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China. E-mail: yyiming2004@126.com2. School of Chemical Engineering, North West University for Nat,1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China.,1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China.,1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China.,1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China. and 1. Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University,Lanzhou 730000, China. |
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| 基金项目： | This work was supported by the National EnvironmentalProtection Commonweal Project of China (No. NEPCP200809098), the Fundamental Research Funds for theCentral Universities in Lanzhou University (No. lzujbky-2009-65) and the National Natural Science F |
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| 摘 要： |
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| 关 键 词： | 土壤重金属污染 生物有效性 锌含量 中国西北 化学分离法 绿洲 油菜 生长 |
| 收稿时间： | 2010-01-23 |
| 修稿时间： | 2010-06-07 |
Chemical fractionations and bioavailability of cadmium and zinc to cole(Brassica campestris L.) grown in the multi-metalscontaminated oasis soil, northwest of China |
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| Yiming Yang,Zhongren Nan,Zhuanjun Zhao,Shengli Wang,Zhaowei Wang and Xia Wang. Chemical fractionations and bioavailability of cadmium and zinc to cole(Brassica campestris L.) grown in the multi-metalscontaminated oasis soil, northwest of China[J]. Journal of environmental sciences (China), 2011, 23(2): 275-281. DOI: 10.1016/S1001-0742(10)60403-2 |
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| Authors: | Yiming Yang Zhongren Nan Zhuanjun Zhao Shengli Wang Zhaowei Wang Xia Wang |
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| Affiliation: | Key Laboratory of Western China's Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University, Lanzhou 730000, China. yyiming2004@126.com |
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| Abstract: | A pot experiment was conducted to study the relationship between distribution of cadmium (Cd) and zinc (Zn) and their availabilityto cole (Brassica campestris L.) grown in the multi-metal contaminated oasis soil in northwest of China. The results showed that Cdand Zn in the unpolluted oasis soil was mainly found in the residual fractionation, however, with increasing contents of Cd and Zn in theoasis soil, the distribution of Cd and Zn changed significantly. The growth of cole could be promoted by low Cd and Zn concentration,but significantly restrained by high concentrations. There was antagonistic e ect among Cd and Zn in the multi-metals contaminatedoasis soil. Stepwise regression analysis between fractionations distribution coe cients of the two meals in the soil and their contents incole showed that both Cd and Zn in the exchangeable fractionation in the oasis soil made the most contribution on the uptake of Cd andZn in cole. The bio-concentration factor (BCF) of Cd was greater than Zn in cole, and BCFs of the two metals in leaves were greaterthan those in roots. The translocation factors of the two metals in cole were greater than 1, and the two metals mainly accumulatedin the edible parts in cole. Therefore, cole is not a suitable vegetable for the oasis soil because of the plants notable contamination byheavy metals. |
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| Keywords: | fractionation bioavailability cadmium and zinc cole oasis soil |
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