DETERMINATION OF PERMETHRIN AND CYFLUTHRIN IN WATER AND SEDIMENT BY GAS CHROMATOGRAPHY-MASS SPECTROMETRY OPERATED IN THE NEGATIVE CHEMICAL-IONIZATION MODE

被引:46
作者
BONWICK, GA
SUN, C
ABDULLATIF, P
BAUGH, PJ
SMITH, CJ
ARMITAGE, R
DAVIES, DH
机构
[1] UNIV SALFORD,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCS,ENGLAND
[2] UNIV SALFORD,DEPT BIOL SCI,SALFORD M5 4WT,LANCS,ENGLAND
[3] CORTECS DIAGNOST LTD,DEESIDE CH5 4NT,CLWYD,WALES
[4] NATL RIVERS AUTHOR,LEEDS LS1 2QG,W YORKSHIRE,ENGLAND
关键词
D O I
10.1016/0021-9673(95)00362-Q
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Gas chromatography-mass spectrometry operated in the negative chemical ionization mode (GC-NCI-MS) with selected-ion monitoring (SIM) showed both high sensitivity and excellent specificity for permethrin and cyfluthrin. The detection limit for both permethrin and cyfluthrin was 50 fg, whilst a linear response was observed from 50 fg to 80 pg. A sample extraction method using an ultrasonic bath was developed enabling simultaneous processing of multiple samples. Good percentage recoveries of both permethrin and cyfluthrin from spiked sediments were obtained (97.3 +/- 4.8% and 93.9 +/- 5.3%, respectively) and sample clean-up was avoided. These methods were also sucessfully applied to samples obtained from a contaminated ecosystem, the highest concentrations recorded in water and sediment samples were 0.048 mu g 1(-1) and 305 mu g kg(-1), respectively.
引用
收藏
页码:293 / 302
页数:10
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