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水库水中草甘膦和草铵膦的国产树脂萃取-硅烷衍生化-气质联用分析法 被引量:3

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摘要 水样用HO-型717阴离子交换树脂萃取,萃取物在二甲基甲酰胺中用N,O—双三甲硅烷基三氟乙酰胺(BSTFA)进行三甲硅烷基(TMS)衍生化或者用N-甲基-N-特丁二甲硅炕基三氟乙酰胺(MTBSTFA)进行特丁二甲硅烷基(TBDMS)衍生化,衍生化反应液直接进样进行选择离子监测气质联用法分析,保留时间结合离子丰度比进行除草剂认定,外标工作曲线法进行含量测定。水中草甘膦和草铵膦的检出限≤1ng/mL,浓度在2ng/mL-500ng/mL范围内线性关系艮好,空白水样20ng/mL添加回收率的平均值在98.7-96.9%范围内,相对标准偏差在11.2-8.9%范围内。
机构地区 中国刑警学院
出处 《中国刑警学院学报》 2010年第1期61-64,共4页 Journal of Criminal Investigation Police University of China
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