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紫菜中有机氯农药和多环芳烃的气相色谱-质谱联用测定法
Authors
倪延延
李梦滢
+5 more
杜鹃
洪颖
王娟
程汉宁
范春
Publication date
20 May 2009
Publisher
Abstract
目的建立测定紫菜中有机氯农药和多环芳烃的气相色谱-质谱分析法。方法紫菜样品经过丙酮-正己烷(体积比为7∶3)提取、C18固相萃取柱净化后,采用气相色谱-色谱联用进行定性和定量。结果有机氯农药和多环芳烃的线性范围均为0.01~5.0μg/ml,方法的检出限分别为0.05~0.32 ng/g(干重)和0.25~0.56 ng/g(干重);有机氯农药的回收率为74.27%~121.49%,平均回收率为91.95%,RSD为3.19%~17.31%;多环芳烃的回收率为65.10%~119.26%,平均回收率为95.60%,RSD为2.75%~14.11%。结论该方法线性关系良好,精密度较高,具有良好的回收率和重复性,可用于紫菜样品中有机氯农药和多环芳烃的检测
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Last time updated on 16/06/2016