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http://dx.doi.org/10.5012/bkcs.2013.34.1.139

Integration of Headspace Solid Phase Micro-Extraction with Gas Chromatography for Quantitative Analysis of Formaldehyde  

Lo, Kong Mun (Chemistry Department, Faculty of Science, University of Malaya)
Yung, Yen Li (Chemistry Department, Faculty of Science, University of Malaya)
Publication Information
Bulletin of the Korean Chemical Society / v.34, no.1, 2013 , pp. 139-142 More about this Journal
Abstract
A study was carried out to evaluate the solid phase micro-extraction (SPME) for formaldehyde emission analysis of uncoated plywood. In SPME, formaldehyde was on-fiber derivatized through headspace extraction and analyzed by gas chromatography coupled with mass spectrometry (GC/MS). The SPME was compared with desiccators (DC-JAS 233), small-scale chamber (SSC-ASTM D6007) and liquid-liquid extraction (LLE-EPA 556) methods which were performed in accordance with their respective standards. Compared to SSC (RSD 4.3%) and LLE (RSD 5.0%), the SPME method showed better repeatability (RSD 1.8%) and not much difference from DC (RSD 1.4%). The SPME has proven to be highly precise (at 95% confidence level) with better recovery (REC 102%). Validation of the SPME method for formaldehyde quantitative analysis was evidenced. In addition, the SPME by air sampling directly from plywood specimens (SPME-W) correlated best with DC ($r^2$ = 0.983), followed by LLE ($r^2$ = 0.950) and SSC ($r^2$ = 0.935).
Keywords
Formaldehyde; Solid phase micro-extraction; Derivatize; GC/MS;
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