Characterization of Curing Emissions from Conversion Varnishes.
作者信息
McCrillis Robert C, Howard Elizabeth M, Guo Zhishi, Krebs Kenneth A, Fortmann Roy, Lao Huei-Chen
机构信息
a U.S. Environmental Protection Agency, National Risk Management Research Laboratory, Air Pollution Prevention and Control Division , Research Triangle Park , North Carolina , USA.
b ARCADIS Geraghty & Miller, Inc. , Durham , North Carolina , USA.
出版信息
J Air Waste Manag Assoc. 1999 Jan;49(1):70-75. doi: 10.1080/10473289.1999.10463777.
Three commercially available conversion varnish coating "systems" (stain, sealer, and topcoat) were selected for an initial scoping study. The total volatile content of the catalyzed varnishes, as determined by U.S. Environmental Protection Agency (EPA) Method 24, ranged from 64 to 73 weight%. Uncombined (free) formaldehyde concentrations, determined by a sodium sulfite titration method, ranged from 0.15 to 0.58 weight% of the uncatalyzed varnishes. Each sealer and topcoat was also analyzed by gas chromatography (EPA Method 311). The primary volatile organic constituents included methyl ethyl ketone (MEK), isobutanol, n-butanol, methyl isobutyl ketone (MIBK), toluene, ethylbenzene, the xylenes, and 1,2,4-trimethylbenzene.
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