Detecting sulfur dioxide in workplace air by ion chromatography coupled with solid adsorption tube sampling
10.11763/j.issn.2095-2619.2018.01.020
- Author:
Chuan WU
1
;
Zhanhong YANG
1
;
Weifeng RONG
1
;
Jiawen HU
1
;
Zuokan LIN
1
;
Xiaolin RUAN
1
Author Information
1. Guangdong Province Hospital for Occupational Disease Prevention and Treatment,Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment Guangzhou,Guangdong 510300,China
- Publication Type:Journal Article
- Keywords:
Sulfur dioxide;
Solid adsorption tube;
Ion chromatography;
Workplace;
Air
- From:
China Occupational Medicine
2018;45(01):95-98
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE: To establish a detecting method for sulfur dioxide in workplace air by molecular sieve solid adsorption tube sampling and ion chromatography. METHODS: Air samples were collected by molecular sieve solid adsorption tubes,desorbed by distilled water,oxidized by hydrogen peroxide in weak base system,separated by anion exchange chromatography and detected by conductivity detector. RESULTS: The good linearity range of sulfur dioxide was0. 10-16. 00 mg/L,and the correlation coefficient was 0. 999 8. The detection limit was 0. 02 mg/L,the minimum detectable concentration was 0. 01 mg/m3. The average desorption efficiency was 96. 53%-99. 35%. The within-run and between-run relative standard deviations were 1. 73%-3. 65% and 1. 80%-4. 46% respectively. The samples could be stored at room temperature for at least 14 days. CONCLUSION: This method is suitable for detecting sulfur dioxide in workplace air.
