Assessment of Exposure to Sensitizing Rosin-derived Compounds from Electronics Soldering
Abstract
Exposure potential for rosin-derived compounds, including volatile and semivolatile organic compounds produced during electronics soldering operations using rosin-based fluxes and rosin core solders, was investigated. A reaction system was constructed for trapping emission products. Particulate matter was collected on filters, and volatile organic compounds were collected on sorbent tube media for analysis by gas chromatography/mass spectrometry (GC/MS). Comparisons were made between reaction system samples and actual breathing zone samples collected during soldering operations. Other work included: (1) A protein conjugation/haptenation mechanism for 7-oxodehydroabietic acid, an oxidized resin acid compound present in aerosol produced by heating rosin flux, (2) Identification of low molecular weight aldehydes in soldering emissions using gas chromatography/mass spectrometery (GC/MS), (3) In vitro studies of resin acid metabolism to identify mammalian metabolites produced from dehydroabietic acid, and (4) A rapid method for analyzing headspace sampling of aldehydes using solvating gas chromatography (SGC). This project provided information regarding the specific compounds generated during rosin heating in electronic soldering applications. A possible biological mechanism was shown for sensitization to a resin acid present in aerosol produced during heating rosin flux. The work described may prove useful in producing an exposure standard for contaminant sampling during electronics soldering operations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 06, 1998
- Accession Number
- ADA355713
Entities
People
- Christopher R. Bowerbank
- Milton L. Lee
Organizations
- Brigham Young University