摘要
低温冷冻萃取,结合高效液相色谱法,测定芝麻糊中的甲氧隆、灭草隆、绿谷隆、溴谷隆、敌草隆、利谷隆和枯草隆。乙腈为萃取剂,考察了盐效应、冷冻时间、萃取剂用量等条件对萃取结果的影响。优化条件下,7种除草剂的加标回收率分别为92．4%、106．3%、106．4%、95．2%、96．9%、94．4%、90．6%,相对标准偏差（ RS-Ds）2．8%-7．4%。
A new HPLC method for the simultaneous determination of 7 kinds of phenylurea herbicides（ metoxuron,monuron,monol-inuron,metobromuron,diuron,linuron and chloroxuron） was established. The sesame paste sample was treated by subzero-tempera-ture frozen extraction and acetonitrile as a solvent. The effects of salt effect,frozen time and extraction solvent volume were examined on extraction efficiency. Under the optimal conditions,the recovery rates of the target analyte were between 90. 6% -106. 4%and the relative standard deviations（ RSDs） were less than 7. 4%.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2014年第1期145-148,共4页
Chemical Research and Application
关键词
低温冷冻萃取
液相色谱
苯脲除草剂
subzero-temperature extraction
liquid chromatography
phenylurea herbicides
