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Methyl siloxanes in barbershops and residence indoor dust and the implication for human exposures
Liu, Nannan; Xu, Lin; Cai, Yaqi
2018-03-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume618Pages:1324-1330
AbstractMethyl siloxanes (MSs) have been widely added as emollients or solvents in various personal care products (PCPs) such as soap, shampoo and hair conditioner. A considerable percentage of MSs are released into the atmosphere directly from the use of PCPs in indoor environments. Indoor dust is a major reservoir of MSs, due to their particle-binding affinity. Dust ingestion could be one exposure pathway for special populations (hairdressers, for example). Though the toxicity of MSs is known, there is no information regarding the occurrence of MSs in barbershop dusts and the exposure of hairdressers through indoor dust ingestion. In the present study, the levels of three cyclic siloxanes (D4-D6) and 13 linear siloxanes (L4-L16) were measured in indoor dust samples collected from barbershops, and some other microenvironment including bathhouses, dormitories and households for comparison. The concentrations of Sigma MSs in barbershop dusts were one to two orders of magnitude higher than those from the other three indoor microenvironments. The daily intakes of Sigma MSs through indoor dust ingestion were estimated using the model of worst-case exposure (95th percentile concentration) and high dust ingestion, For the hairdressers in workplaces (barbershops), the exposure rates were 14.3 ng/kg-bw/day, and for the general population, college students and toddlers (1-3 yr), the corresponding exposure rates in living spaces were 3.43, 2.00 and 222 ng/kg-bw/day, respectively. Such high exposure levels of MSs through dust ingestion indicate that we should not overlook the potential health risks for occupational groups and toddlers. Published by Elsevier B.V.
Department环境化学与生态毒理学国家重点实验室
KeywordMethyl siloxanes Indoor dust Barbershops Human exposure
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/40981
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Liu, Nannan,Xu, Lin,Cai, Yaqi. Methyl siloxanes in barbershops and residence indoor dust and the implication for human exposures[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,618:1324-1330.
APA Liu, Nannan,Xu, Lin,&Cai, Yaqi.(2018).Methyl siloxanes in barbershops and residence indoor dust and the implication for human exposures.SCIENCE OF THE TOTAL ENVIRONMENT,618,1324-1330.
MLA Liu, Nannan,et al."Methyl siloxanes in barbershops and residence indoor dust and the implication for human exposures".SCIENCE OF THE TOTAL ENVIRONMENT 618(2018):1324-1330.
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