二甲戊乐灵在溪黄草及土壤中的残留分析方法研究  

Study on Residue Analysis Method of Pendimethalin in Rabdosia lophanthoides Hara and Soil

作　　者：刘凯丽[1] 段敏敏[1] 吴加伦[1] 王德勤[2] 张慧晔[2] 徐友阳[2] 

机构地区：[1]农业部植物病原及昆虫分子生物学重点实验室浙江大学农药与环境毒理研究所,浙江杭州310058 [2]广州白云山和记黄埔中药有限公司,广东广州510000

出　　处：《分析科学学报》2016年第3期401-404,共4页Journal of Analytical Science

基　　金：国家科技重大专项(No.2009ZX09502027-003)

摘　　要：本文对溪黄草样品采用丙酮-正己烷提取,活性炭-中性氧化铝柱净化,石油醚-丙酮淋洗前处理;土壤样品经乙腈提取等步骤前处理,建立了溪黄草及土壤中二甲戊乐灵残留的气相色谱-电子捕获检测器（GC-ECD）的分析方法。结果表明：二甲戊乐灵的最小检出量为0.1ng,其在溪黄草和土壤中的最低检测浓度均为0.01mg/kg,在溪黄草中的平均回收率为88.53%～90.45%,相对标准偏差（RSD）为1.33%～2.76%;在土壤中的平均回收率为93.94%～96.23%,RSD为4.67%～4.80%,二甲戊乐灵在0.01～2mg/L范围内具有良好的线性关系。A method has been developed for the determination of pendimethalin by gas chromatography with an electrical conductivity detector（GC-ECD）.The results showed that the limit of detection of pendimethalin was 0.1ng,meanwhile,the minimum detectable concentration was 0.01 mg/kg in both Rabdosia lophanthoides Hara and soil.The fortified recoveries of pendimethalin were 88.53%-90.45% and 93.94%-96.23% in Rabdosia lophanthoides Haraand soil,with relative standard deviations（RSDs）of 1.33%-2.76% and 4.67%-4.80% respectively.There was a good linear relationship in the range of 0.01-2.0mg/L for pendimethalin.

关 键 词：二甲戊乐灵 溪黄草 土壤 气相色谱法 

分 类 号：O657.71[理学—分析化学]