Determination of nitrogen oxides in the air of workplace by ion chromatography
10.3760/cma.j.issn.1001-9391.2019.12.014
- VernacularTitle: 工作场所测定空气中氮氧化物含量离子色谱法
- Author:
Chengming MENG
1
;
Zhengli MENG
2
;
Wenhua QIN
1
;
Shanfa YU
1
Author Information
1. The Institute of Occupational Disease Prevention of Henan Province, Zhengzhou 450052, China
2. Xuchang People's Hospital, Xuchang 461000, China
- Publication Type:Journal Article
- Keywords:
Chromatography, Ion;
Workplace;
Atmospheres;
Nitrogen oxide
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2019;37(12):932-935
- CountryChina
- Language:Chinese
-
Abstract:
Objective:Improvement the method of nitrogen oxide sampling, analysis and detection in workplace air.
Methods:Absorption and collection with sodium carbonate-sodium bicarbonate buffer solution, analysised by ion chromatography, anion column AS23, column temperature 30 ℃.
Results:The linearity of the nitrite ion in the corresponding mass concentration range 0~90.0 μg/ml was good (Nitrogen dioxide in 0~120.0 mg/m3) , correlation coefficient>0.999 5. The detection limit was 0.16 μg/ml, The minimum detection concentration was 0.11 mg/m3 with the sampling volume 7.5 L.
Conclusion:The method has good accuracy, high sensitivity, with directing injection and no pre-treatment, and can popularize in general laboratories, and can satisfy the determination of nitrogen oxides in the air of workplace.
