Related Experiment Videos
Dimethyl sulphate; a hidden problem in occupational medicine
T Schettgen1, H C Broding, J Angerer
1Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-University of Erlangen-Nuremberg, Schillerstrasse 25/29, D-91054 Erlangen, Germany.
Occupational and Environmental Medicine
|December 24, 2003
Summary
Occupational exposure to dimethyl sulfate can lead to increased N-methylvaline blood levels in chemical plant workers. Skin contact is identified as the primary exposure route, suggesting this chemical poses an underestimated occupational risk.
Area of Science:
- Occupational Health
- Toxicology
- Biomonitoring
Background:
- Dimethyl sulfate is used in chemical plants for surfactant production.
- Potential for worker exposure to alkylating agents exists.
- Surfactant manufacturing involves hazardous chemicals like dimethyl sulfate.
Purpose of the Study:
- To assess occupational uptake of dimethyl sulfate by monitoring N-methylvaline levels.
- To establish a biomarker for dimethyl sulfate exposure in workers.
- To investigate the relationship between workplace exposure and biological markers.
Main Methods:
- Blood N-methylvaline levels were measured in 62 workers with potential dimethyl sulfate exposure.
- A control group of 10 unexposed laboratory workers was included.
- Follow-up analysis of N-methylvaline was conducted on a subset of exposed workers.
Main Results:
- Exposed workers showed significantly higher N-methylvaline levels (95th centile 80.7 microg/l) than controls (12.4 microg/l).
- Some workers exceeded exposure limits, despite undetectable dimethyl sulfate in workplace air.
- N-methylvaline levels decreased but remained elevated in follow-up tests.
Conclusions:
- This study is the first to report elevated N-methylvaline following occupational dimethyl sulfate exposure.
- Skin contact is implicated as the primary route of dimethyl sulfate absorption.
- Dimethyl sulfate exposure may be a more significant occupational health concern than previously recognized.