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Sorption, degradation and mobility of microcystins in Chinese agriculture soils: Risk assessment for groundwater protection

机译：中国农业土壤中微囊藻毒素的吸附，降解和迁移：地下水保护的风险评估

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摘要

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.
机译：本文研究了三种微囊藻毒素变种在中国农业土壤中的吸附，持久性和浸出行为。根据这项研究，三种土壤中三种MC变体的容量因子和斜率值分别为0.69至6.00和1.01至1.54。 MCs在土壤中的吸附量按以下顺序降低：RR> Dha（7）LR> LR。此外，对于三种土壤中的每种MC变体，土壤中的吸附速率按以下顺序降低：土壤A>土壤C>土壤B。对于MC-RR，计算得出的半衰期介于7.9和17.8天之间，为6.0- MC-LR为17.1天，MC-Dha（7）LR为7.1-10.2天。浸出实验的结果表明，沥滤液中毒素的回收率范围为RR为0-16.7％，LR为73.2-88.9％和Dha 7 LR为8.9-73.1％。 GUS值的范围从RR的1.48到2.06，对于LR的1.82-2.88和对于Dha（7）LR的1.76-2.09。结果表明使用蓝细菌收集物作为植物肥料在土壤中可能是不安全的。 （c）2006 Elsevier Ltd.保留所有权利。

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