Open AccessA new toxic and harmful gas analyzer based on DOAS technology
Author(s) -
Zhaoyang Yuan,
Jiayong Zhou,
Xinyan Qian,
Shizhong Wang,
Juntao Zhao,
Hongqi Shi
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/702/1/012051
Subject(s) - spectrum analyzer , differential optical absorption spectroscopy , gas analyzer , absorption (acoustics) , analytical chemistry (journal) , environmental science , computer science , optics , chemistry , chromatography , physics , environmental chemistry , telecommunications
This paper introduces a new type of toxic and harmful gas analyzer based on DOAS (differential optical absorption spectroscopy) technology. Combined with the least square method, it can monitor H 2 S, NH 3 , SO 2 , NO 2 and CH 3 SH online at the same time, and the prescribed minimum is as low as 0.1ppb, the detection breadth and accuracy are higher than those of the current common DOAS instruments.