化学研究与应用
化學研究與應用
화학연구여응용
CHEMICAL RESEARCH AND APPLICATION
2014年
1期
145-148
,共4页
低温冷冻萃取%液相色谱%苯脲除草剂
低溫冷凍萃取%液相色譜%苯脲除草劑
저온냉동췌취%액상색보%분뇨제초제
subzero-temperature extraction%liquid chromatography%phenylurea herbicides
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%。
低溫冷凍萃取,結閤高效液相色譜法,測定芝痳糊中的甲氧隆、滅草隆、綠穀隆、溴穀隆、敵草隆、利穀隆和枯草隆。乙腈為萃取劑,攷察瞭鹽效應、冷凍時間、萃取劑用量等條件對萃取結果的影響。優化條件下,7種除草劑的加標迴收率分彆為92．4%、106．3%、106．4%、95．2%、96．9%、94．4%、90．6%,相對標準偏差( RS-Ds)2．8%~7．4%。
저온냉동췌취,결합고효액상색보법,측정지마호중적갑양륭、멸초륭、록곡륭、추곡륭、활초륭、리곡륭화고초륭。을정위췌취제,고찰료염효응、냉동시간、췌취제용량등조건대췌취결과적영향。우화조건하,7충제초제적가표회수솔분별위92．4%、106．3%、106．4%、95．2%、96．9%、94．4%、90．6%,상대표준편차( 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%.
