摘要
花生和土壤中的丙线磷残留用甲醇提取，加氯化钠溶液稀释后转溶于石油醚中。土壤提取液浓缩后可直接用气相色谱仪火焰光度检测器（磷检测状态）检测，花生提取液经弗罗里硅土和活性炭柱层析净化后检测。最小检知量为０．０４２ｎｇ，对花生仁和土壤的实测最低检出浓度为０．００２８ｍｇ／ｋｇ，在花生仁、植株和土壤中的添加回收率为８８．２％～９５．８％。
Ethoprophos residues in peanut and soil were extracted with methanol.The extracts were re-extracted with petroleum ether in the presence of aqueous solution of sodium chloride.The concentrated extract of soil sample was directly determined by phosphorus-specific flame photometric gas chromatography,while peanut extract should be purified early on charcoal and deactivated Florisil column.The method is sensitive to 0.042 ng ethoprophos and the limit of determination in peanut and soil was 0.0028mg/kg.The fortified recoveries varied from 88.2%～95 8%.
出处
《河北师范大学学报（自然科学版）》
CAS
1997年第1期96-99,共4页
Journal of Hebei Normal University：Natural Science
