Detection of 2-methylpropanal,2-methyl butanal and 3-methyl butanal in workplace air by portable gas chromatography-mass spectrometry
10.11763/j.issn.2095-2619.2019.03.022
- Author:
Mushui SHU
1
;
Mo DAN
1
;
Xiaohui JI
1
;
Yu WANG
1
;
Qi ZHANG
1
;
Pengyao ZHOU
1
;
Ding DING
1
;
Wei HUANG
1
Author Information
1. Beijing Municipal Institute of Labour Protect Beijing 100054,China
- Publication Type:Journal Article
- Keywords:
Portable;
Gas chromatography-mass spectrometry;
2-Methylpropanal;
2-Methyl butanal;
3-Methyl butanal;
Workplace;
Air
- From:
China Occupational Medicine
2019;46(03):367-370
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE: To establish a method for detection of 2-methylpropanal,2-methyl butanal and 3-methyl butanal in workplace air by portable gas chromatography-mass spectrometry( GC-MS). METHODS: The workplace air was collected by portable GC-MS sampling probe. After enrichment by Tri-bed tube,the thermal desorption sample was analyzed by retention time and characteristic ion characterization. The characteristic ion peak area was quantified. RESULTS: The linear ranges of 2-methylpropanal,2-methyl butanal and 3-methyl butanal were 0. 079-15. 880,0. 080-16. 080 and 0. 161-32. 120 mg/m~3,respectively. All the correlation coefficients were greater than 0. 999. The detection limits were 0. 012,0. 007 and0. 013 mg/m~3,and the quantitation limits were 0. 041,0. 023 and 0. 044 mg/m~3,respectively. The recovery rates of2-methylpropanal,2-methyl butanal and 3-methyl butanal were 92. 2%-104. 4%. The within-run relative standard deviation( RSD) was 5. 8%-9. 1%. The between-run RSD of different batches samples was 9. 3%-19. 6%. CONCLUSION: This method has high accuracy and is precise,which is suitable for rapid qualitative and quantitative detection of2-methylpropanal,2-methyl butanal and 3-methyl butanal in workplace air.
