ABSOLUTE INFRARED BAND INTENSITIES AND AIR BROADENING COEFFICIENT FOR SPECTROSCOPIC MEASUREMENTS OF FORMIC-ACID IN AIR

被引：19

作者：

NOTHOLT, J ^{[1
]}

CAPPELLANI, F ^{[1
]}

ROESDAHL, H ^{[1
]}

RESTELLI, G ^{[1
]}

机构：

[1] COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,INST ENVIRONM,ISPRA SITE,I-21020 ISPRA,ITALY

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1991年 / 47卷 / 3-4期

关键词：

D O I：

10.1016/0584-8539(91)80125-3

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The absolute infrared intensities of the nu-2, nu-3 and nu-6 bands of formic acid have been evaluated in a 480 L White cell system using FTIR and ion chromatography techniques. The values obtained are, respectively; (4.2 +/- 0.2) x 10(-17) cm molec-1 for the nu-6 band, (4.8 +/- 0.2) x 10(-17) cm molec-1 for the nu-3 band and (0.57 +/- 0.04) x 10(-17) cm molec-1 for the nu-2 band. The air broadening coefficient of transitions in the nu-6 band, has been measured using a tunable diode laser spectrometer, equal to (0.101 +/- 0.005) cm-1 atm-1 (half width at half maximum). A computer search has been performed to find absorption lines of formic acid suitable for second derivative tunable diode laser measurement of this gas in ambient air.

引用

页码：477 / 483

页数：7

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