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Comprehensive VOC analysis method for architectural coatings / Lucas J. Brickweg in COATINGS TECH, Vol. 4, N° 1 (01/2007)
[article]
Titre : Comprehensive VOC analysis method for architectural coatings Type de document : texte imprimé Auteurs : Lucas J. Brickweg, Auteur ; Max Wills, Auteur ; Dane Jones, Auteur ; Audrey Guillermo, Auteur Année de publication : 2007 Article en page(s) : p. 48-55 Langues : Américain (ame) Index. décimale : 667.9 Revêtements et enduits Résumé : Specific regulatory volatile organic compound (VOC) limits have been set for architectural coatings to ensure that emissions from these materials will decrease and air quality will improve. As regulations have lowered limits of allowed VOCs, a significant problem with enforceability of these regulations has developed since reliable methods for the analysis of these VOCs are not available. Currently, the United States Environmental Protection Agency's (U.S. EPA) Method 24 is used to test the VOC content of coatings. It is widely accepted that Method 24 is not reliable for the analysis of low VOC waterborne coatings. Method 24 is also not suitable for determining the VOC content of solventborne coatings containing high levels of exempt compounds. In both cases, the reason for the unreliability of Method 24 results from its being an indirect method of measuring VOCs in these types of coatings. Several other methods have been developed to deal with the problems of Method 24. However, none of these methods is applicable to all types of architectural coatings and none can deal with the specific problems mentioned. In addition, Method 24 cannot determine the level of hazardous air pollutants (HAPs) in coatings. We have developed direct methods for determining the VOC content in architectural coatings based on direct injection, headspace analysis, and solid phase microextraction (SPME) using gas chromatography with both flame ionization and mass spectral detection. These methods are suitable for direct determination of VOCs for all waterborne architectural coatings, even those with very low VOC levels. The methods are also suitable for direct determination of HAPs and exempt compounds in solventborne coatings. These methods can be used with confidence to determine whether or not a given coating meets the appropriate regulatory VOC level. En ligne : https://drive.google.com/file/d/1__gHqM7Ffy7nPp0hjoeP6MvRvsc6WBbe/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3605
in COATINGS TECH > Vol. 4, N° 1 (01/2007) . - p. 48-55[article]Réservation
Réserver ce documentSpeciation of the volatile organic compounds (VOCs) in solventborne aerosol coatings by solid phase microextraction-gas chromatography / Albert C. Censullo in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)
[article]
Titre : Speciation of the volatile organic compounds (VOCs) in solventborne aerosol coatings by solid phase microextraction-gas chromatography Type de document : texte imprimé Auteurs : Albert C. Censullo, Auteur ; Dane Jones, Auteur ; Max Wills, Auteur Année de publication : 2003 Article en page(s) : p. 47-53 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude expérimentale Solvant organique Fluide propulseur Chromatographie phase gazeuse Microextraction solide Spéciation Composé volatil Analyse chimique Aérosol Peinture Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A method for the speciation of solventborne aerosol coatings is presented. Propellant from an aerosol coating is transferred to a gas collection bag and is then analyzed by GC-FID. The propellant-free liquid paint is then internally standardized with a mixture of C5 to C11 normal alkanes and analyzed on a 50-meter capillary column using solid phase microextraction (SPME) with GC-FID detection. This procedure makes it possible to assign linear retention indexes to virtually all of the individual volatile solvents in the coating with subsequent identification. After identification by SPME, the coating is dispersed in a high boiling solvent, internally standardized with a material not coeluting with the coating solvents, and is then analyzed by direct GC-FID. VOC regulations in California for aerosol coatings products require that the coatings have a reactivity (product weighted maximum incremental reactivity or PWMIR) which is below a designated value. Assignment of PWMIR values to aerosol coatings requires that the amount of each individual volatile component in a coating be known. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5611
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 47-53[article]Réservation
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