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A platform for research: civil engineering, architecture and urbanism
Addressing new chemicals of emerging concern (CECs) in an indoor office
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Highlights We proposed a reliable pipeline for screening new indoor chemicals utilizing GC × GC. The addressed organics are all intermediate volatility organic compounds (IVOCs). Partition properties of organics are evaluated by pixel-based approaches.
Abstract Indoor pollutants change over time and place. Exposure to hazardous organics is associated with adverse health effects. This work sampled gaseous organics by Tenax TA tubes in two indoor rooms, i.e., an office set as samples, and the room of chassis dynamometer (RCD) set as backgrounds. Compounds are analyzed by a thermal desorption comprehensive two-dimensional gas chromatography-quadrupole mass spectrometer (TD-GC × GC-qMS). Four new chemicals of emerging concern (CECs) are screened in 469 organics quantified. We proposed a three-step pipeline for CECs screening utilizing GC × GC including 1) non-target scanning of organics with convincing molecular structures and quantification results, 2) statistical analysis between samples and backgrounds to extract useful information, and 3) pixel-based property estimation to evaluate the contamination potential of addressed chemicals. New CECs spotted in this work are all intermediate volatility organic compounds (IVOCs), containing mintketone, isolongifolene, β-funebrene, and (5α)-androstane. Mintketone and sesquiterpenes may be derived from the use of volatile chemical products (VCPs), while (5α)-androstane is probably human-emitted. The occurrence and contamination potential of the addressed new CECs are reported for the first time. Non-target scanning and the measurement of IVOCs are of vital importance to get a full glimpse of indoor organics.
Addressing new chemicals of emerging concern (CECs) in an indoor office
Graphical abstract Display Omitted
Highlights We proposed a reliable pipeline for screening new indoor chemicals utilizing GC × GC. The addressed organics are all intermediate volatility organic compounds (IVOCs). Partition properties of organics are evaluated by pixel-based approaches.
Abstract Indoor pollutants change over time and place. Exposure to hazardous organics is associated with adverse health effects. This work sampled gaseous organics by Tenax TA tubes in two indoor rooms, i.e., an office set as samples, and the room of chassis dynamometer (RCD) set as backgrounds. Compounds are analyzed by a thermal desorption comprehensive two-dimensional gas chromatography-quadrupole mass spectrometer (TD-GC × GC-qMS). Four new chemicals of emerging concern (CECs) are screened in 469 organics quantified. We proposed a three-step pipeline for CECs screening utilizing GC × GC including 1) non-target scanning of organics with convincing molecular structures and quantification results, 2) statistical analysis between samples and backgrounds to extract useful information, and 3) pixel-based property estimation to evaluate the contamination potential of addressed chemicals. New CECs spotted in this work are all intermediate volatility organic compounds (IVOCs), containing mintketone, isolongifolene, β-funebrene, and (5α)-androstane. Mintketone and sesquiterpenes may be derived from the use of volatile chemical products (VCPs), while (5α)-androstane is probably human-emitted. The occurrence and contamination potential of the addressed new CECs are reported for the first time. Non-target scanning and the measurement of IVOCs are of vital importance to get a full glimpse of indoor organics.
Addressing new chemicals of emerging concern (CECs) in an indoor office
Song, Kai (author) / Yang, Xinping (author) / Wang, Yunjing (author) / Wan, Zichao (author) / Wang, Junfang (author) / Wen, Yi (author) / Jiang, Han (author) / Li, Ang (author) / Zhang, Jingshun (author) / Lu, Sihua (author)
2023-10-09
Article (Journal)
Electronic Resource
English
Contaminants of emerging concern (CECs) adsorption on superfine activated carbon
| DOAJ | 2022