Direct VOC analysis of water-based coatings by gas chromatography and solid-phase microextraction / Albert C. Censullo in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 869 (06/1997)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 869 (06/1997) . - p. 33-41 Titre : Direct VOC analysis of water-based coatings by gas chromatography and solid-phase microextraction Type de document : texte imprimé Auteurs : Albert C. Censullo, Auteur ; Dane R. Jones, Auteur ; Max T. Wills, Auteur Année de publication : 1997 Article en page(s) : p. 33-41 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chimie analytique Chromatographie en phase gazeuse Composés organiques volatils Extraction (chimie) Revêtements en phase aqueuse:Peinture en phase aqueuse solvants Index. décimale : 667.9 Revêtements et enduits Résumé : Solvents in water-based coatings may be determined by sampling the coating head space using solid phase microextraction and gas chromatographing the extract. Several water-based coatings of known composition were analyzed by direct capillary gas chromatography and excellent agreement with theoretical VOC values was obtained. Fifty-two water-based architectural and industrial maintenance coatings were analyzed by a combination of SPME/GC and direct GC of solutions in methanol or dimethyl-formamide and the results compared with reported values. The SPME/GC method appears to be especially suitable for the analysis of low VOC content water-based coatings, for which EPA Method 24 often gives poor results. The identification and quantitation ofexempt solvents may be performed easily with this method. Residual solvent in dried paint films may be determined by SPME/GC. Note de contenu : - EXPERIMENTAL : Solid-phase microextraction - Direct analysis of coatings samples - Validation - Paint film analysis - Gas chromatographic analysis of commercial water-based coatings Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18244 [article]

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Speciation 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]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 47-53 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 [article]

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