Detecting sulfur dioxide in workplace air by ion chromatography coupled with solid adsorption tube sampling / 中国职业医学
China Occupational Medicine
; (6): 95-98, 2018.
Article
em Zh
| WPRIM
| ID: wpr-881672
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WPRO
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.
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WPRIM
Idioma:
Zh
Revista:
China Occupational Medicine
Ano de publicação:
2018
Tipo de documento:
Article