Urinary metal concentrations among female welders

Area of Science:

• Occupational Health
• Environmental Toxicology
• Industrial Hygiene

Background:

• Women are increasingly entering non-traditional trades, including welding.
• Understanding occupational exposures and their health implications for women in these fields is crucial.
• Previous studies have focused on male welders, leaving a gap in knowledge regarding female welders' exposures.

Purpose of the Study:

• To assess urinary metal concentrations in women welders in Alberta.
• To compare these levels to the general population and previously studied male welders.
• To investigate the relationship between specific welding tasks and urinary metal levels.

Main Methods:

• Analysis of spot urine samples from 45 women welders in Alberta.
• Measurement of seven metals (cadmium, chromium, cobalt, copper, manganese, nickel, zinc).
• Use of principal component analysis and multiple regression to analyze metal concentrations in relation to welding tasks and demographics.

Main Results:

• High proportions of women welders exceeded general population 95th percentiles for manganese (96%) and chromium (29%).
• Urinary metal concentrations were generally similar to those of male welders, with manganese and possibly copper being lower in women.
• Limited association found between specific welding tasks and urinary metal levels, except for lower cadmium in semi-automatic manual welding.

Conclusions:

• Women welders exhibit elevated urinary metal exposures, particularly for manganese and chromium.
• Exposures appear comparable to male welders, but differences in specific metals warrant further investigation.
• Further research with a comparable male welder cohort is needed to fully understand sex-based differences in welding exposures.