摘要
烟草样品中的灭多威残留用乙酸乙酯提取，再经碱解、液液分配净化等步骤除去干扰物质，用极性毛细管柱（DB—FFAP）分离、氮磷检测器（NPD）测定。方法最小检出量（LOD）为0．01ng，最低检出浓度（LOQ）为0.01ms／kg；添加浓度为0．1～1．0mg／kg时，平均回收率为88．9％-91．7％，相对标准偏差（RSD）〈15％（n=4）。方法准确、灵敏、无杂质干扰，数据准确可靠，可用于烟草中灭多威残留量的检测。
Methomyl residue in tobacco was extracted by Ethyl acetate and separated by capillary column DB - FFAP, and then determined by NPD detector after interfering material were eliminated by hydrolysis and liquid - liquid distribution purification. The limit of detection （LOD） was 0.01 ng, and the limit of quantitation （LOQ） in the samples of tobacco was 0.01 mg/kg. The average recovery of the method varied from 88.9% to 91.7% and the relative standard deviation （RSD） was less than 15% （ n = 4） when the samples were spiked at 0.1 - 1. 0 mg/kg. The results showed that the method was sensitive and precise.
出处
《云南农业大学学报》
CAS
CSCD
2007年第4期507-509,共3页
Journal of Yunnan Agricultural University
