OPTIMIZING ELECTRON-CAPTURE DETECTOR PERFORMANCE FOR GAS-CHROMATOGRAPHIC ANALYSIS OF POLYCHLORINATED-BIPHENYLS

被引：10
|
作者：
CHEN, CY [1 ]
LING, YC [1 ]
机构：
[1] NATL TSING HUA UNIV,DEPT CHEM,HSINCHU 300,TAIWAN
来源：
CHROMATOGRAPHIA | 1992年 / 33卷 / 5-6期
关键词：
GAS CHROMATOGRAPHY; ELECTRON-CAPTURE DETECTOR; POLYCHLORINATED BIPHENYLS; SIMPLEX OPTIMIZATION; PRINCIPAL COMPONENT FACTOR ANALYSIS;
D O I：
10.1007/BF02276194
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
A modified simplex technique has been applied to optimize the performance of an electron-capture detector under constant-current and constant-frequency pulse modes for the gas chromatographic analysis of polychlorinated biphenyls. Optimal performance was obtained by adjusting the four experimental parameters of pulse voltage, detector temperature, make-up gas flow rate, and reference current (or pulse frequency) using the signal-to-noise ratio of the eluting peak as the criterion. The results show that constant-current pulse mode has better sensitivity and dynamic range whereas the constant-frequency pulse mode has the lower detection limit. Subsequent principal component factor analysis indicated that similar performance is achievable using only three parameters.
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页码：272 / 278
页数：7
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