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Emissions of fluorides from welding processes.
Małgorzata Szewczyńska1, Emilia Pągowska1, Krystyna Pyrzyńska2
1Department of Chemical and Aerosol Hazards, Central Institute for Labour Protection, - National Research Institute, Czerniakowska 16 00-701 Warsaw, Poland.
Journal of Environmental Sciences (China)
|November 18, 2015
Summary
This study measured airborne fluoride particulates from welding using the IOM Sampler. Fluoride levels in welding rooms were found to be significant, posing potential occupational health risks.
Area of Science:
- Occupational Health and Safety
- Environmental Science
- Analytical Chemistry
Background:
- Welding processes can release hazardous airborne particulates.
- Fluoride exposure is a concern in occupational settings.
- Accurate measurement of airborne fluoride is crucial for risk assessment.
Purpose of the Study:
- To investigate airborne fluoride particulate levels emitted from welding processes.
- To validate a sampling and analytical method for fluoride determination.
- To quantify fluoride concentrations in both inhalable and respirable fractions.
Main Methods:
- Utilized the patented IOM Sampler for simultaneous collection of inhalable and respirable fractions.
- Employed ion chromatography with conductometric detection for quantitative fluoride analysis.
- Optimized fluoride extraction from filters using water, CTAB, and an ultrasonic bath.
Main Results:
- Established limits of detection (8μg/L) and quantification (24μg/L).
- Determined a linear calibration range of 0.01-10mg/L.
- Found fluoride concentrations in the respirable fraction ranging from 0.20-1.82mg/m(3) and in the inhalable fraction from 0.23-1.96mg/m(3) during an eight-hour workday.
Conclusions:
- The developed method is effective for measuring airborne fluorides in welding environments.
- Significant levels of fluoride particulates were detected in the air of welding rooms.
- Findings highlight the need for effective control measures to mitigate occupational fluoride exposure.
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