RT Journal Article
T1 Portable dehumidifiers condensed water: A novel matrix for the screening of semi-volatile compounds in indoor air
A1 Cobo Golpe, María
A1 Ramil Criado, María
A1 Cela Torrijos, Rafael
A1 Rodríguez Pereiro, Isaac
K1 Indoor air
K1 Semi-volatile compounds
K1 Dehumidifiers
K1 Non-target screening
K1 Gas chromatography accurate mass spectrometry
AB The comprehensive identification of organic species existing in indoor environments is a key issue to understand their impact in human health. This study proposes the analysis of condensed water samples, collected with portable dehumidifiers, to characterize semi-volatile compounds in the gas phase of confined areas. Water samples are concentrated by solid-phase extraction (SPE). The obtained extracts are analysed by gas chromatography (GC) time-of-flight mass spectrometry (TOF-MS), following a non-target screening data mining approach. In first term, spectra of deconvoluted compounds are compared with those in NIST low resolution library; thereafter, tentative identifications are verified using an in-house database of accurate electron ionization (EI) MS spectra. Chromatographic (retention index) and spectral data are combined for unambiguous species identification. The potential of condensed water samples to reflect changes in the composition of indoor atmospheres, the match between data obtained using different dehumidifiers, and the relative concentration efficiency of condensed water compared to that attained by active sampling of moderate air volumes are discussed. A total of 141 semi-volatile compounds were identified (98 confirmed against authentic standards) in a set of 21 samples obtained from different homes and working places. This list contains more than 40 fragrances (including several potential allergens), solvents and intermediates in the production of polymeric materials, plasticizers and flame retardants
PB Elsevier
SN 0045-6535
YR 2020
FD 2020
LK http://hdl.handle.net/10347/20860
UL http://hdl.handle.net/10347/20860
LA eng
NO M. Cobo-Golpe, M. Ramil, R. Cela, I. Rodríguez, Portable dehumidifiers condensed water: A novel matrix for the screening of semi-volatile compounds in indoor air, Chemosphere, Volume 251, 2020, 126346, ISSN 0045-6535, https://doi.org/10.1016/j.chemosphere.2020.126346
NO This study was supported by Xunta de Galicia and Spanish Government through grants GRC-ED431C 2017/36 and PGC2018-094613-B-I00, both co-funded by the EU
DS Minerva
RD 28 abr 2026