巴塔克平原农业土壤的除草剂污染和风险评估
1Department of Plant Protection, Faculty of Agriculture, Canakkale Onsekiz Mart University, Çanakkale, Turkiye.
概括
在巴塔克平原的一半地区发现了除草剂残留物.
科学领域:
- 环境化学环境化学
- 农业科学 农业科学
- 毒理学 毒理学 毒理学
背景情况:
- 农业土壤对于粮食生产至关重要.
- 杀虫剂的使用可能会导致土壤污染.
- 评估除草剂残留物和相关风险对于环境和人类健康至关重要.
研究的目的:
- 分析巴塔克平原农业土壤中的除草剂残留量.
- 对检测到的农药进行健康风险评估.
- 评估QuEChERS-LC-MS/MS方法用于除草剂分析的有效性.
主要方法:
- 用快速-轻松-廉价-高效-粗-安全 (QuEChERS) 方法结合液体染色学/并列质谱法 (LC-MS/MS) 分析了土壤样本.
- 方法验证包括增剂实验,总回收率为87.32%,符合SANTE回收限值.
- 健康风险评估包括计算检测到的除草剂的危险指数 (HI) 和危险系数 (HQ).
主要成果:
- 大约50%的土壤样本含有可检测的除草剂度.
- 检测到八种不同的除草剂,其度范围从1.085到1724.23μg/kg-1.1.
- 在农药废弃物处理场所附近发现的甲基度最高;持续的除草剂如terbuthylazine和pendimethalin也很普遍.
结论:
- 该研究证实,巴塔克平原农业土壤中存在除草剂残留物.
- 尽管HI和HQ值普遍较低 (均<1),表明风险最小,但特布氨酸等特定除草剂对儿童的HQ值较高.
- 在分析农业土壤中除草剂污染方面,QuEChERS-LC-MS/MS方法被证明是有效的.
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