CALIBRATION OF A WINDOWLESS PHOTOACOUSTIC CELL FOR DETECTION OF TRACE GASES

被引：9

作者：

ANGELI, GZ

SOLYOM, AM

MIKLOS, A

BICANIC, DD

机构：

[1] HUNGARIAN ACAD SCI,INST ISOTOPES,H-1525 BUDAPEST,HUNGARY

[2] AGR UNIV WAGENINGEN,DEPT AGR ENGN & PHYS,LASER PHOTOACOUST LAB,6701 AP WAGENINGEN,NETHERLANDS

来源：

ANALYTICAL CHEMISTRY | 1992年 / 64卷 / 02期

关键词：

D O I：

10.1021/ac00026a012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The instrumental figure of performance, F, of a windowless, gas-phase photoacoustic cell, defined as the ratio of the normalized photoacoustic signal to the absorbance, is shown to be dependent on the sample, in contrast to previous assumptions. However, for a particular gas, F is independent of concentration in the ppm range. A method of calibration of such a cell is outlined in the absorbance range from 2 X 10(-6) to 5 X 10(-3). The estimated detection limits at a signal to noise ratio of unity were 7.4 ppm, 0.43 ppb, and 1.3 ppb for carbon dioxide, ammonia, and ethylene, respectively.

引用

页码：155 / 158

页数：4

共 23 条

[1] DESIGN AND CHARACTERIZATION OF A WINDOWLESS RESONANT PHOTOACOUSTIC CHAMBER EQUIPPED WITH RESONANCE LOCKING CIRCUITRY [J].