气候变化领域集成服务门户(CCPortal): Measurement report: Seasonality; distribution and sources of organophosphate esters in PM2.5 from an inland urban city in Southwest China

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DOI	10.5194/acp-20-14933-2020
	Measurement report: Seasonality; distribution and sources of organophosphate esters in PM2.5 from an inland urban city in Southwest China
	Yin H.; Liang J.; Wu D.; Li S.; Luo Y.; Deng X.
发表日期	2020
ISSN	1680-7316
起始页码	14933
结束页码	14945
卷号	20 期号:23
英文摘要	Organophosphate esters (OPEs) are contaminants of emerging concern, and studies have concluded that urban areas are a significant source of OPEs. Samples were collected from six ground-based sites located in Chengdu, a typical rapidly developing metropolitan area in Southwest China, and were analyzed for seven OPEs in atmospheric PM2:5 (67 OPEs). The concentrations of 67 OPEs in PM2:5 ranged from 5.83 to 6.91 ngm3, with a mean of 6.63.3 ngm3, and the primary pollutants were tris-(2-butoxyethyl) phosphate (TBEP), tri-n-butyl phosphate (TnBP), tris-(2-chloroethyl) phosphate (TCEP) and tris-(2-chloroisopropyl) phosphate (TCPP), which together made up more than 80% of the 67 OPEs. The concentrations of 67 OPEs were higher in autumn and winter than in summer. Nonparametric tests showed that there was no significant difference in 67 OPE concentrations among the six sampling sites, but the occurrence of unexpectedly high levels of individual OPEs at different sites in autumn might indicate noteworthy emissions. A very strong correlation (R2 D0.98, p 0.01) between the OPEs in soil and in PM2:5 was observed. Backward trajectory analysis indicated that the OPEs in PM2:5 were mainly affected by local sources. Principal component analysis (PCA) revealed that the OPEs in PM2:5 were largely sourced from the plastics industry, interior decoration and traffic emission (34.5 %) and the chemical, mechanical and electrical industries (27.8 %), while the positive matrix factorization (PMF) model revealed that the main sources were the plastics industry and indoor source emissions, the food and cosmetics industry and industrial emissions. In contrast to coastal cities, sustained and stable high local emissions in the studied inland city were identified, which is particularly noteworthy. Chlorinated phosphates, especially TCPP and TCEP, had a high content, and their usage and source emissions should be controlled. © 2020 BMJ Publishing Group. All rights reserved.
英文关键词	concentration (composition); ester; metropolitan area; organophosphate; particulate matter; principal component analysis; seasonality; urban area; Chengdu; China; Sichuan
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168921
作者单位	College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610025, China
推荐引用方式 GB/T 7714	Yin H.,Liang J.,Wu D.,et al. Measurement report: Seasonality; distribution and sources of organophosphate esters in PM2.5 from an inland urban city in Southwest China[J],2020,20(23).
APA	Yin H.,Liang J.,Wu D.,Li S.,Luo Y.,&Deng X..(2020).Measurement report: Seasonality; distribution and sources of organophosphate esters in PM2.5 from an inland urban city in Southwest China.Atmospheric Chemistry and Physics,20(23).
MLA	Yin H.,et al."Measurement report: Seasonality; distribution and sources of organophosphate esters in PM2.5 from an inland urban city in Southwest China".Atmospheric Chemistry and Physics 20.23(2020).