Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.) | |
Zhang, XH; Su, YH; Zhu, YG; Lin, AJ | |
刊名 | CHEMOSPHERE |
2005 | |
卷号 | 60期号:6页码:802-809 |
关键词 | Atrazine Cadmium Rice Seedlings Uptake Bioconcentration Factor |
DOI | 10.1016/j.chemosphere.2005.04.022 |
英文摘要 | The uptake of atrazine by rice seedlings (Oryza sativa L.) through plant roots from nutrient solution was investigated in the presence and absence of Cd2+ over an exposure period of four weeks. It was found that both atrazine and Cd2+ were toxic to rice seedlings. Both shoot and root biomasses decreased when the seedlings were exposed to increasing atrazine or Cd2+ concentrations in nutrient solutions. In the absence of Cd2+, a linear relationship was observed between atrazine concentrations in roots/shoots and in external solution, and more atrazine is concentrated in roots than in shoots. When atrazine and Cd2+ concentrations in solution were maintained at mole ratio of 1:1, the accumulation of atrazine by seedlings was less and the seedling biomass was greater than found with other ratios, such as 1:2 or 2:1. Therefore, the formation of the complex between atrazine and Cd2+ reduced the individual toxicities. Analyses of data with the quasi-equilibrium partition model indicated that the atrazine concentrations in rice seedlings and external water were close to equilibrium. In the presence of Cd2+, however, the measured bioconcentration factor (BCF) of atrazine with roots and shoots were considerably greater. The latter findings resulted presumably from the atrazine-Cd2+ complex formation that led to a large apparent BCF. (C) 2005 Elsevier Ltd. All rights reserved. |
学科主题 | Environmental Sciences & Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/23347] |
专题 | 生态环境研究中心_土壤环境科学实验室 |
推荐引用方式 GB/T 7714 | Zhang, XH,Su, YH,Zhu, YG,et al. Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.)[J]. CHEMOSPHERE,2005,60(6):802-809. |
APA | Zhang, XH,Su, YH,Zhu, YG,&Lin, AJ.(2005).Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.).CHEMOSPHERE,60(6),802-809. |
MLA | Zhang, XH,et al."Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.)".CHEMOSPHERE 60.6(2005):802-809. |
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