环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2013年
4期
42-44
,共3页
液液萃取%气相色谱法%百菌清%菊酯类农药%地表水
液液萃取%氣相色譜法%百菌清%菊酯類農藥%地錶水
액액췌취%기상색보법%백균청%국지류농약%지표수
Liquid-liquid extraction ( LLE)%Gas chromatography ( GC)%Chlorothalonil%Pyrethroid%Sur-face water
采用正己烷萃取地表水中的百菌清和6种菊酯类农药,通过毛细管气相色谱法-电子捕获检测器( GC-ECD)定性定量。供试农药的线性范围:百菌清为10.0μg/L~200μg/L,6种菊酯类为50.0μg/L~1000μg/L;方法检出限分别为:百菌清0.054μg/L,甲氰菊酯0.62μg/L,三氟氯氰菊酯0.68μg/L,氯菊酯0.40μg/L,氯氰菊酯0.65μg/L,氰戊菊酯0.78μg/L,溴氰菊酯0.15μg/L;对地表水样品3个质量浓度水平的平均加标回收率为91.3%~118%,6次平行测定的RSD<5%。
採用正己烷萃取地錶水中的百菌清和6種菊酯類農藥,通過毛細管氣相色譜法-電子捕穫檢測器( GC-ECD)定性定量。供試農藥的線性範圍:百菌清為10.0μg/L~200μg/L,6種菊酯類為50.0μg/L~1000μg/L;方法檢齣限分彆為:百菌清0.054μg/L,甲氰菊酯0.62μg/L,三氟氯氰菊酯0.68μg/L,氯菊酯0.40μg/L,氯氰菊酯0.65μg/L,氰戊菊酯0.78μg/L,溴氰菊酯0.15μg/L;對地錶水樣品3箇質量濃度水平的平均加標迴收率為91.3%~118%,6次平行測定的RSD<5%。
채용정기완췌취지표수중적백균청화6충국지류농약,통과모세관기상색보법-전자포획검측기( GC-ECD)정성정량。공시농약적선성범위:백균청위10.0μg/L~200μg/L,6충국지류위50.0μg/L~1000μg/L;방법검출한분별위:백균청0.054μg/L,갑청국지0.62μg/L,삼불록청국지0.68μg/L,록국지0.40μg/L,록청국지0.65μg/L,청무국지0.78μg/L,추청국지0.15μg/L;대지표수양품3개질량농도수평적평균가표회수솔위91.3%~118%,6차평행측정적RSD<5%。
A method for determining concentrations of chlorothaonil and 6 pyrethroid pesticides in surface water was developed by using GC-ECD with capillary column , the contaminants being extracted from surface wa-ter by n-hexane.The linear ranges of 7 pesticides were 10.0 μg/L~200 μg/L(chlorothaonil) and 50.0 μg/L~1 000 μg/L(fenpropathrin, cyhalothrin, permethrin, cypermethrin, fenvalerate, deltamethrin).The average recoveries of pesticides by spiking ranged from 91.3%to 118%;RSD ranged from 0.8%to 4.9%.The method detection limits are:chlorothaonil 0.054 μg/L, fenpropathrin 0.62 μg/L, cyhalothrin 0.68 μg/L, permethrin 0.40 μg/L, cypermethrin 0.65 μg/L, fenvalerate 0.78 μg/L, deltamethrin 0.15 μg/L.