| Development of a sampling and analytical method for measuring the epoxy content of aerosols: II. Application of the method to epoxy-containing aerosols. | |
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MedLine Citation:
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PMID: 3687737 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Aerosols generated by epoxy spray painting consist of droplets containing partially-cured mixtures of epoxy resins and curing agents, as well as pigments, solvents and diluents. A sampling and analytical method has been developed to measure the epoxy content of these aerosols. The method collects the aerosol in a midget impinger containing dimethyl formamide, which inhibits the curing reaction between the epoxy and curing agent, preserving the unreacted epoxy functional groups present in the aerosol. The impinger contents are analyzed by reacting the epoxy with an excess of bromide generated in situ from tetraethylammonium bromide, and measuring the unreacted bromide in the reaction mixture by normal pulse polarography. The precision and accuracy of the method have been evaluated using a pure epoxy resin as a model compound. The method was applied to aerosols containing mixtures of epoxy resin and amine curing agents in various degrees of cure, to aerosols containing large quantities of nonepoxy compounds, and to aerosols of epoxy surface coatings. The method is capable of precise and accurate measurement of epoxide functionality, and it applicable to the measurement of epoxy-containing aerosols in spray finishing operations. |
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Authors:
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R F Herrick; T J Smith; M J Ellenbecker |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American Industrial Hygiene Association journal Volume: 48 ISSN: 0002-8894 ISO Abbreviation: Am Ind Hyg Assoc J Publication Date: 1987 Sep |
Date Detail:
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Created Date: 1988-01-06 Completed Date: 1988-01-06 Revised Date: 2001-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0371160 Medline TA: Am Ind Hyg Assoc J Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 773-9 Citation Subset: IM; S |
Affiliation:
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National Institute for Occupational Safety and Health, Cincinnati, OH 45226. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aerosols
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analysis Air Pollutants / analysis Atmosphere Exposure Chambers Dimethylformamide Epoxy Resins / analysis* Paint Polarography Solvents |
| Chemical | |
Reg. No./Substance:
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0/Aerosols; 0/Air Pollutants; 0/Epoxy Resins; 0/Solvents; 68-12-2/Dimethylformamide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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