Measurement report: Seasonal, distribution and sources of organophosphate esters  in PM<sub>2.5</sub> from an inland urban city in southwest China

doi:10.5194/acp-2020-329

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-329
	Measurement report: Seasonal, distribution and sources of organophosphate esters in PM_2.5 from an inland urban city in southwest China
	Hongling Yin, Jiangfeng Liang, Di Wu, Shiping Li, Yi Luo, and Xu Deng
	2020-05-19
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Organophosphate esters (OPEs) are emerging contaminants in recent years and studies concluded that urban centers were a significant source of OPEs. Samples were collected from six ground-based sites located in Chengdu, a typical fast developing metropolitan of southwest China and were analyzed for seven OPEs in atmospheric PM_2.5. The concentrations of Σ₇OPEs in PM_2.5 ranged from 5.83 to 6.91 ng m⁻³, with a mean of 6.6 ± 3.3 ng m⁻³, and the primary pollutants were TBEP, TnBP, TCEP and TCPP which made up more than 80 % in the Σ₇OPEs. The concentrations of Σ₇OPEs were higher in autumn/winter than that in summer. Nonparametric test showed that there was no significant difference in Σ₇OPEs concentrations among the six sampling sites, but the occurence of unexpected high level of individual OPEs at different sites in autumn might indicate that there was a noteworthy emission. Very strong correlation (R² = 0.98, p < 0.01) between the OPEs in soil and in PM_2.5 suggested the atmospheric PM_2.5 settlement is an important source of OPEs in soil. The backward trajectory analysis displayed that OPEs in PM_2.5 were mainly affected by local sources. The principal component analysis (PCA) identified the OPEs in PM_2.5 were largely sourced from the plastic industry/interior decoration /traffic emission (34.5 %) and chemical, mechanical and electrical industry (27.8 %), while PMF model found the main sources were the plastics industry/indoor source emissions, the food/cosmetics industry, and industrial emissions. Differed from the coastal cities, the sustained and stable high local emissions in the inland city were identified which were particularly noteworthy. The chlorinated phosphate, especially TCPP and TCEP have a high content, whose usage and source emissions should be controlled.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/267546
专题	地球科学
推荐引用方式 GB/T 7714	Hongling Yin, Jiangfeng Liang, Di Wu, Shiping Li, Yi Luo, and Xu Deng. Measurement report: Seasonal, distribution and sources of organophosphate esters in PM_2.5 from an inland urban city in southwest China[J]. Atmospheric Chemistry and Physics,2020.
APA	Hongling Yin, Jiangfeng Liang, Di Wu, Shiping Li, Yi Luo, and Xu Deng.(2020).Measurement report: Seasonal, distribution and sources of organophosphate esters in PM_2.5 from an inland urban city in southwest China.Atmospheric Chemistry and Physics.
MLA	Hongling Yin, Jiangfeng Liang, Di Wu, Shiping Li, Yi Luo, and Xu Deng."Measurement report: Seasonal, distribution and sources of organophosphate esters in PM_2.5 from an inland urban city in southwest China".Atmospheric Chemistry and Physics (2020).