分散固相萃取-液质联用法测定稻渔综合种养环境中四种农药残留

Environmental Chemistry(2019)

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Abstract
建立了液相色谱-串联质谱法(HPLC-MS/MS)同时测定稻渔综合种养环境中苄嘧磺隆、双草醚、吡蚜酮和氯虫苯甲酰胺的分析方法.水样过滤后直接进样,土壤和水产品经乙腈匀浆提取,C18吸附剂净化.结果表明,在不同基质中,4种农药在各自的线性范围内线性关系良好(R2≥0.995);水中氯虫苯甲酰胺的检出限为0.10μg·kg-1,其它3种为0.05μg·kg-1;土壤和水产品中氯虫苯甲酰胺的检出限(LOD)为0.20μg·kg-1,其它3种为0.10 μg· kg-1;在不同添加水平下,4种农药的平均回收率为77.52%-93.86%,相对标准偏差(RSD)为3.73%-11.09%.
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