摘要
利用超声波提取-气质联用法调查了北京市不同水产品市场4种常见淡水食用鱼体内25种农药的残留水平,并利用商值法评价了农药的潜在健康风险.在采集的48个样品中,除七氯、o,p'-DDT、敌敌畏、对硫磷、毒死蜱、仲丁威和久效磷以外,其余18种农药均有不同程度检出.其中,检出率最高的为乙草胺(97.9%)和β-六六六(93.8%);检出农药含量最高的为百菌清(1 779.4μg·kg-1),其次为溴氰菊酯(620.3μg·kg-1).鱼体中有2～10种农药共存,其总浓度为2.7～1 932μg·kg-1.潜在健康风险评价结果表明,按照北京市民的平均水产品消费量,北京水产品市场上的4种主要食用鱼中的农药风险商值为0.043 43,处于较低水平.
Health risks by fish consumption were assessed following the investigation of the residual levels of 25 pesticides in four kinds of freshwater fish from 4 aquatic product markets in Beijing using ultrasonic extraction-GC-MS. Eighteen pesticides were detected from the 48 samples collected. Acetochlor （97.9%） and β-HCH （93.8%） showed high detection rates. The pesticide detected in highest concentration was chlorothalonil （ 1 779.4 ug.kg-1 ）, followed by deltamethrin （620. 3 ug.kg-1 ）. Coexistence of 2- 10 kinds of pesticides in fish was found with the total pesticide concentration in range of 2.7- 1 932 ug.kg-1 Based on the averaged fish consumption of Beijing residents, the health risk of the studied pesticides by freshwater fish consumption was calculated as 0. 043 43, suggesting a relatively low health risk.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2013年第1期251-256,共6页
Environmental Science
基金
北京市财政专项引进中央在京科技资源平台建设项目
环境模拟与污染控制国家重点联合实验室仪器平台方法开发与应用研究课题项目
关键词
鱼
农药
健康风险评价
风险商
北京
freshwater fish
pesticide
health risk assessment
risk quotient
Beijing
