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Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China

Methylsiloxanes (MSs), used in industrial production and personal care products, are released in various environmental media. In this study, we combined monitoring and modeling to investigate the occurrence and behavior of MSs in the urban environment in China. MSs were widely found in the air, wate...

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Autores principales: Jiang, Yao, Guo, Junyu, Zhou, Ying, Zhang, Boya, Zhang, Jianbo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9658807/
https://www.ncbi.nlm.nih.gov/pubmed/36360747
http://dx.doi.org/10.3390/ijerph192113869
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author Jiang, Yao
Guo, Junyu
Zhou, Ying
Zhang, Boya
Zhang, Jianbo
author_facet Jiang, Yao
Guo, Junyu
Zhou, Ying
Zhang, Boya
Zhang, Jianbo
author_sort Jiang, Yao
collection PubMed
description Methylsiloxanes (MSs), used in industrial production and personal care products, are released in various environmental media. In this study, we combined monitoring and modeling to investigate the occurrence and behavior of MSs in the urban environment in China. MSs were widely found in the air, water, soil and sediment of four cities in China. The concentrations of MSs in all four environmental media of Zhangjiagang were higher than those in the other three cities (Beijing, Kunming and Lijiang), indicating that the siloxane production plant had a significant impact on the pollution level of MSs in the surrounding environment. The samples with high MS concentrations were all from the sample sites near the outlet of the WWTPs, which showed that the effluent of the WWTPs was the main source of MS pollution in the surrounding environment. The modeling results of the EQC level III model showed that D4 discharged into the environment was mainly distributed in the air, while D5 and D6 were mainly distributed in the sediment. CMSs (D4–D6) discharged into various environmental media could exist in the urban environment for a long time with low temperatures in cities. When the temperature was 0 °C, the residence time of D5 and D6 could be 68.1 days and 243 days in the whole environmental system in Beijing. This study illustrates the importance of CMSs (D4–D6) in low-temperature environments and the potential environmental risks that they may pose.
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spelling pubmed-96588072022-11-15 Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China Jiang, Yao Guo, Junyu Zhou, Ying Zhang, Boya Zhang, Jianbo Int J Environ Res Public Health Article Methylsiloxanes (MSs), used in industrial production and personal care products, are released in various environmental media. In this study, we combined monitoring and modeling to investigate the occurrence and behavior of MSs in the urban environment in China. MSs were widely found in the air, water, soil and sediment of four cities in China. The concentrations of MSs in all four environmental media of Zhangjiagang were higher than those in the other three cities (Beijing, Kunming and Lijiang), indicating that the siloxane production plant had a significant impact on the pollution level of MSs in the surrounding environment. The samples with high MS concentrations were all from the sample sites near the outlet of the WWTPs, which showed that the effluent of the WWTPs was the main source of MS pollution in the surrounding environment. The modeling results of the EQC level III model showed that D4 discharged into the environment was mainly distributed in the air, while D5 and D6 were mainly distributed in the sediment. CMSs (D4–D6) discharged into various environmental media could exist in the urban environment for a long time with low temperatures in cities. When the temperature was 0 °C, the residence time of D5 and D6 could be 68.1 days and 243 days in the whole environmental system in Beijing. This study illustrates the importance of CMSs (D4–D6) in low-temperature environments and the potential environmental risks that they may pose. MDPI 2022-10-25 /pmc/articles/PMC9658807/ /pubmed/36360747 http://dx.doi.org/10.3390/ijerph192113869 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Yao
Guo, Junyu
Zhou, Ying
Zhang, Boya
Zhang, Jianbo
Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title_full Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title_fullStr Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title_full_unstemmed Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title_short Occurrence and Behavior of Methylsiloxanes in Urban Environment in Four Cities of China
title_sort occurrence and behavior of methylsiloxanes in urban environment in four cities of china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9658807/
https://www.ncbi.nlm.nih.gov/pubmed/36360747
http://dx.doi.org/10.3390/ijerph192113869
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