Detection of 2-methylpropanal,2-methyl butanal and 3-methyl butanal in workplace air by portable gas chromatography-mass spectrometry / 中国职业医学
China Occupational Medicine
;
(6): 367-370, 2019.
Article
in Chinese
| WPRIM
| ID: wpr-881808
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Diagnostic study
/
Qualitative research
Language:
Chinese
Journal:
China Occupational Medicine
Year:
2019
Type:
Article
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