FUNDAMENTAL NOISE IN 3 CHROMATOGRAPHIC DETECTORS

被引:14
作者
AUE, WA
SINGH, H
SUN, XY
机构
[1] Department of Chemistry, Dalhousie University, Halifax
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1016/0021-9673(94)00582-6
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Counting statistics are used to estimate the minimum theoretical noise of three chromatographic detectors, by assuming that the standard deviation of their baselines equals the square root of their primary chemical events. These primary events are taken to be the observed generation of photons in the flame photometric detector, the emission of beta rays in the electron-capture detector, and the formation of ion pairs in the flame ionization detector. The theoretically estimated and the experimentally observed noise agree in every case. This suggests that baseline noise in the three particular detectors is due, predominantly if not exclusively, to random processes involving the atomic structure of matter: therefore, it cannot be further reduced.
引用
收藏
页码:283 / 290
页数:8
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