STUDY OF CONCENTRATION RETRIEVING METHOD IN   DIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY FOR MEASURING AIR POLLUTANTS

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Abstract
The principle of differential optical absorption spectroscopy (DOAS) for measuring the concentration of air pollutants is presented. The adjustment of measured spectra and the least-squares method are also described .We have been using this method in retrieving the concentration of air pollutants and measuring the air pollutants for a long time and the results were coincident with circumstances. This method was proved very suitable for retrieving the concentration of air pollutants in DOAS system and provides a good technique for environmental monitoring.

Keywords:
DOAS /

spectrum adjustment /

least-squared method /

environmental monitoring
Authors and contacts
ZHOU BIN,

LIU WEN-QING,

QI FENG,

LI ZHEN-BI,

CHUI YAN-JUN

1.
中国科学院安徽光学精密机械研究所环境监测研究室,合肥230031
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