Some hygienic observations from the glass industry

Area of Science:

• Occupational Health and Safety
• Environmental Science
• Materials Science

Background:

• Glassworkers, especially glassblowers, are at risk of cancer due to metallic compounds used in glass manufacturing.
• Limited hygienic data exists for the art glass industry, necessitating further investigation into exposure pathways.

Purpose of the Study:

• To assess airborne concentrations of lead, arsenic, nickel, and manganese in art glassworks.
• To investigate hygienic conditions of blow-pipes, focusing on slag composition as a potential source of oral exposure.

Main Methods:

• Air sampling and analysis for metal concentrations (lead, arsenic, nickel, manganese) using atomic absorption spectrophotometry.
• Analysis of slag deposits inside blow-pipes from multiple glassworks to determine metal content.

Main Results:

• Airborne lead concentrations were significantly higher in heavy crystal glassworks compared to semi-crystal glassworks, with several exceeding the Swedish threshold limit.
• Blow-pipe slag in heavy crystal glassworks contained higher concentrations of lead and nickel than in semi-crystal glassworks.
• Arsenic and manganese levels in air and slag were generally low, with only slight increases in manganese in heavy crystal glass production.

Conclusions:

• Heavy crystal glass production presents higher risks of lead exposure for glassworkers through both airborne particles and contaminated blow-pipe slag.
• The findings highlight the need for improved hygiene practices and exposure monitoring in the art glass industry, particularly concerning lead.