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Demirtepe, Hale; Melymuk, Lisa; Codling, Garry; Murínová, Ľubica Palkovičová; Richterová, Denisa; Rašplová, Vladimíra; Trnovec, Tomáš; Klánová, Jana
The Science of the total environment, 08/2021, Letnik: 781Journal Article
Indoor dust is an important exposure route to anthropogenic chemicals used in consumer products. Plasticizers are common product additives and can easily leach out of the product and partition to dust. Investigations of plasticizers typically focus on a subset of phthalate esters (PEs), but there are many more PEs in use, and alternative plasticizers (APs) are seeing greater use after recognition of adverse health effects of PEs. In this study we use full scan high resolution mass spectrometry for targeted and suspect screening of PEs and APs in house dust and to assess the potential risk of human exposure. House dust samples from Eastern Slovakia were investigated and concentrations of ∑12PEs and ∑5APs ranged 12–2765 μg/g and 45–13,260 μg/g, respectively. APs were at similar levels to PEs, indicating common usage of these compounds in products in homes. Evaluation of individual compound toxicity combined with human intake via dust ingestion suggested PEs are of lower priority compared to semivolatile organic compounds such as polychlorinated biphenyls due to their lower toxicity. However, cumulative risk assessment (CRA) is a more appropriate evaluation of risk, considering the presences of many PEs in dust and their similar toxic mode of action. CRA based on median toxicity reference values (TRVs) suggested acceptable risks for dust ingestion, however, the wide range of literature-derived TRVs is a large uncertainty, especially for the APs. Use of newer TRVs suggest risk from dust ingestion alone, i.e. not even considering diet, inhalation, and dermal contact. Additionally, screening of full-scan instrumental spectra identified a further 40 suspect PE compounds, suggesting the CRA based on the 12 target PEs underestimates the risk. Display omitted •DEHP & DEHT dominated phthalate & alternative plasticizer dust levels, respectively.•Acceptable risks estimated for anti-androgenic effects of PEs via dust ingestion.•Uncertainty in toxicity data and other exposure routes may alter the risk.•Non-target analysis suggests >50 PEs in dust; many are ignored in risk assessment.
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