Temperature Compensation for Concentration of NO2 Based on DOAS

被引：0

作者：

Zhao, Jingfang ^{[1
]}

Guo, Yongcai ^{[1
]}

Fan, Fenglian ^{[1
]}

Wang, Yanping ^{[1
]}

Chen, Fang ^{[1
]}

机构：

[1] Chongqing Univ, Sch Optoelect Engn, Minist Educ, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China

来源：

2019 2ND INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING, INDUSTRIAL MATERIALS AND INDUSTRIAL ELECTRONICS (MEIMIE 2019) | 2019年

关键词：

Gas detectors; Temperature compensation; Integration; Absorption spectroscopy; Differential optical absorption spectroscopy; ABSORPTION CROSS-SECTIONS; SPECTRA; SO2; DEPENDENCE; NM; UV;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Temperature has an effect on the accuracy of measurement results of NO2 by using differential optical absorption spectroscopy (DOAS) technology to monitor the concentration of polluted gases in air in real time. In this paper, a new method of temperature compensation is proposed, in which the integral value of differential absorption cross section is linearly fitted with the temperature. Fitting functions in selected five wave-bands are used to respectively compensate, and the results are compared. The experimental results show that the relative error after compensation is less than 1.67%, which can significantly improve the accuracy of NO2 concentration measurement.

引用

页码：309 / 314

页数：6

共 11 条

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