Assessment of the environmental persistence and long-range transport of endosulfan
Assessment of the environmental persistence and long-range transport of endosulfan
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DOI：
10.1016/j.envpol.2011.02.012
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发表时间：
2011-06-01
影响因子：
8.9
通讯作者：
Hungerbuehler, Konrad
中科院分区：
文献类型：
--
作者：
Becker, Linus;Scheringer, Martin;Hungerbuehler, Konrad
使用全球环境归宿模型CliMoChem计算了杀虫剂硫丹（α-和β-异构体）及其降解产物硫丹硫酸盐在空气、海水和土壤中的浓度。作为模型输入，所有三种化合物的物理化学性质进行了组装，并产生了一个纬度和时间分辨的排放清单。对于空气中的浓度，模型和测量结果吻合良好;模型再现了在北极空气中观察到的春季和秋季两个峰值的双峰季节性。对于海水，模型和测量结果的一致性取决于模型中使用的硫丹水解活化能值;由于该值相对较高，约为100千焦/摩尔，因此模型结果与实地数据吻合良好。对硫丹的含量、持久性和全球分布情况的评估结果也与根据《斯德哥尔摩公约》对硫丹作为持久性有机污染物进行评价有关。(C)2011爱思唯尔有限公司保留所有权利。
Concentrations of the insecticide endosulfan (alpha- and beta-isomer) and its degradation product endosulfan sulfate in air, seawater and soil are calculated with the global environmental fate model CliMoChem. As model input, physicochemical properties of all three compounds were assembled and a latitudinally and temporally resolved emission inventory was generated. For concentrations in air, model and measurements are in good agreement; a bimodal seasonality with two peaks in spring and fall as it is observed in Arctic air is reproduced by the model. For seawater, the agreement of model and measurements depends on the values of the hydrolysis activation energy of endosulfan used in the model; with relatively high values around 100 kJ/mol, model results match field data well. The results of this assessment of the levels, persistence, and global distribution of endosulfan are also relevant for the evaluation of endosulfan as a Persistent Organic Pollutant under the Stockholm Convention. (C) 2011 Elsevier Ltd. All rights reserved.