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Suspect screening analysis in house dust from Belgium using high resolution mass spectrometry; prioritization list and newly identified chemicals.

Abstract：

:In recent years, several changes have been made to the composition of various products which are used indoors. Plenty of new chemical additives have been incorporated to materials to comply with current legislation and safety rules. Consequently, the emission profiles of contaminants detected indoors may change over time, requiring continuous monitoring. In this study, dust samples were collected from 25 homes located in the Flemish region of Belgium during different seasons (winter and summer). Our aim was the development of a suspect screening workflow for the identification of new chemicals which might have been applied to indoor goods, released into the indoor environment, and accumulated in dust. An in-house suspect list was curated including selected groups of compounds, namely "phthalates", "phosphates", "terephthalates", "citrates", "trimellitates", (di-, tri-, tetra-) "carboxylic acids", "adipates", "azelates", "sebacates", (di-)"benzoates", and "succinates". 63 chemicals were prioritized based on their level of identification and detection frequency in samples. Seasonal comparison was tested, indicating that higher temperatures of summer might facilitate the release of few chemicals from the products into the indoor environment. Seven chemicals, to the best of our knowledge not previously reported, were selected out of the 63 listed and identified for structure confirmation using high-resolution mass spectrometry. Tributyl trimellitate (TBTM), bis (3,5,5-trimethylhexyl) phosphate (Bis-3,5,5-TMHPh), iso-octyl 2-phenoxy ethyl terephthalate (IOPhET), dimethyl azelate (DMA), dimethyl sebacate (DMS), dipropylene glycol dibenzoate (DiPGDB) and 3,5-di-tert-butyl-4-hydroxybenzaldehyde (BHT-CHO) were detected at frequencies ranging from 8 to 52% in winter and 4-56% in summer dust.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Christia C,Poma G,Caballero-Casero N,Covaci A

doi

10.1016/j.chemosphere.2020.127817

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

127817

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(20)32012-9

journal_volume

263

pub_type

杂志文章

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