Sorption, degradation and mobility of microcystins in Chinese agriculture soils: Risk assessment for groundwater protection
Sorption, degradation and mobility of microcystins in Chinese agriculture soils: Risk assessment for groundwater protection
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DOI：
10.1016/j.envpol.2006.02.023
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发表时间：
2006-12-01
影响因子：
8.9
通讯作者：
Li, Lin
中科院分区：
文献类型：
--
作者：
Chen, Wei;Song, Lirong;Li, Lin
本文研究了三种微囊藻毒素变异体在中国农业土壤中的吸附、滞留和淋滤行为。在此基础上，3种土壤中3种MCs变异的容量因子和坡度值分别为0.69 ~ 6.00和1.01 ~ 1.54。土壤对MCs的吸附顺序为：RR > Dha(7) LR > LR。此外，对于每种MC变异，3种土壤的吸附速率依次递减：土壤A >土壤C >土壤b。MC- rr的计算半衰期为7.9 ~ 17.8天，MC-LR为6.0 ~ 17.1天，MC- dha (7) LR为7.1 ~ 10.2天。浸出实验结果表明，RR浸出液中毒素的回收率为0 ~ 16.7%，LR为73.2 ~ 88.9%，Dha 7 LR为8.9 ~ 73.1%。RR、LR和Dha(7) LR的GUS值分别为1.48 ~ 2.06、1.82 ~ 2.88和1.76 ~ 2.09。结果表明，在土壤中使用蓝藻集合作为植物肥料可能是不安全的。(c) 2006 Elsevier Ltd.版权所有。
In the present paper, sorption, persistence, and leaching behavior of three microcystin variants in Chinese agriculture soils were examined. Based on this study, the values of capacity factor and slope for three MCs variants in three soils ranged from 0.69 to 6.00, and 1.01 to 1.54, respectively. The adsorption of MCs in the soils decreased in the following order: RR > Dha(7) LR > LR. Furthermore, for each MC variant in the three soils, the adsorption rate in the soils decreased in the following order: soil A > soil C > soil B. The calculated half-time ranged between 7.9 and 17.8 days for MC-RR, 6.0-17.1 days for MC-LR, and 7.1-10.2 days for MC-Dha(7) LR. Results from leaching experiments demonstrated that recoveries of toxins in leachates ranged from 0-16.7% for RR, 73.2-88.9% for LR, and 8.9-73.1% for Dha 7 LR. The GUS value ranged from 1.48 to 2.06 for RR, 1.82-2.88 for LR, and 1.76-2.09 for Dha(7) LR. Results demonstrated the use of cyanobacterial collections as plant fertilizer is likely to be unsafe in soils. (c) 2006 Elsevier Ltd. All rights reserved.