VOC uptakes on gypsum boards: Sorption performances and impact on indoor air quality

Potential of static sampling using solid-phase microextraction for the assessment of formaldehyde sorption on building materials

“…There is a need to better know the influencing experimental factors in order to seek convergence of methods to estimate these sorption parameters. Despite these uncertainties on the influence of experimental conditions, the Ke values reported in these studies are among the highest found for VOCs under comparable experimental conditions indicating a strong tendency to sorption of formaldehyde on interior surfaces (Tichenor et al, 1991;Thevenet et al, 2018;Won et al, 2000Won et al, , 2001An et al, 1999). Note also that low-emitting materials as the floorings and gypsum board have the Ke values comparable with those of the wood-based materials having high formaldehyde emission levels assessed by other recent methods (Huang et al, 2013;Xiong et al, 2011b;Zhou et al, 2018).…”

“…It has not been proven that these differences in conditions do not influence the results of adsorption and desorption rate coefficients. The direct injection mass spectrometry such as SIFT-MS (Selected Ion Flow Tube Mass Spectrometry) can be an interesting tool especially for assessing the sorption parameters of formaldehyde at low concentration levels typical of indoor environments (Thevenet et al, 2018). Another alternative is the using of Solid Phase Micro-Extraction (SPME) sampling performed in an airtight emission cell.…”

Comparative analysis of formaldehyde and toluene sorption on indoor floorings and consequence on Indoor Air Quality

“…Some of these authors suggested that formaldehyde may be transferred in water film formed on the material surfaces in relation to the highly water‐soluble nature of compound 13 . Other authors 18 pointed out that the materials with the surface oxygen functionalities like OH groups in the case of gypsum board have an increased sorption capability of formaldehyde. Ye et al 12 showed that the mass transfer of formaldehyde in some selected polymers can be partially irreversible.…”

“…The trend was found in the overall sorption tests except for PVC1 and is as a result of adsorption F I G U R E 2 Calibration curve obtained in GC-FID, A = f(C × t), for formaldehyde by combining the data of two calibration series before and after the sorption experiments (circles and diamonds, respectively). FID, flame ionization detector; GC, gas chromatography 13,18,19,28,29 Previous studies showed that vapor pressure is a reasonably good predictor of the adsorption capability of VOCs spanning the mostly chemical classes on the materials. 30 Formaldehyde is a compound more volatile than toluene, its partition coefficient K e should be lower…”

“…Recently, the direct injection mass spectrometry (MS) such as SIFT-MS (selected ion flow tube MS) or PTR-MS (proton transfer reaction-mass spectrometer) was used as means of VOC measurements. 18,19 Another way is the using of solid-phase microextraction…”