摘要
以汉江流域的中下游地区为研究区域,选择应用范围广、用量大、毒性高的农药为目标污染物,采用EQC模拟农药的地球化学行为和归宿,评价农药使用对地表水环境的影响,结果表明,绝大多数农药存在于土壤和水环境中.根据地表水环境质量标准(GB 3838-2002)和水体中农药浓度模拟结果,推算安全使用量(有效成分,kg/ha)分别为:甲基对硫磷2.3、对硫磷10.7、乐果5.7、敌敌畏9.0、甲胺磷1.8、甲草胺1.8、丁草胺11.4.
Geochemical behavior and fate of pesticides at the middle -lower reaches of Hanjiang River catchment are calculated by using EQC model in this paper. 7 pesticides, which are of high toxicity and widely and largely used, are chosen as target pollutants. Results show that most of the pesticides exist in soil and water environment. According to the water environment quality standard and the modeling results, the safe dosages （kg/ha） were proposed as follows： 2.3, 10.7, 5.7, 9.0, 1.8, 1.8 and 11.4 respectively for parathion butachlor. methyl, parathion, dimethoate, dichlorvos, methamidophos, alachlor and butachlor.
出处
《武汉化工学院学报》
2005年第4期13-15,22,共4页
Journal of Wuhan Institute of Chemical Technology
基金
国家自然科学基金项目(49832005)
关键词
汉江流域
农药
EQC模型
迁移
归宿
Hanjiang River catchment
pesticide
EQC model
transportation
fate
