典型室内公共场所灰尘中PBDEs污染特征及源解析

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Abstract In order to explore the pollution characteristics of SVOCs represented by polybrominated diphenyl ethers (PBDEs) in typical indoor public places and the relationship with materials, dust samples were collected and analyzed in 5 types of typical public places, PBDEs concentration in different indoor materials were analyzed by using environmental simulation cabin, then the coefficient of volatile strengths of PBDEs (K_vsPBDEs), decay half-life was determined. The relationship between the concentration of PBDEs and different indoor materials was analyzed by PCA. The results revealled that the concentration of ∑₁₄ PBDEs in dust in 5 typical Hangzhou indoor public places from high to low was:Internet cafes (2471.75ng/g), electronic markets (1071.77ng/g), building materials markets (900.63ng/g), shopping malls (441.27ng/g), and book cities (243.36ng/g). Among the selected 10 pollution source materials, the highest concentration of ∑₁₄ PBDEs was thermal insulation cotton (91.61μg/g), and the lowest was circuit board (7.97μg/g), the highest K_vsPBDEs was wire (14.04×10⁴μg/(g×m²)), and the lowest was fiber wallpaper (0.87×10⁴ μg/(g×m²)), finally, plastic carpet, insulation and cotton fiber wallpapers ecay half-life (192,375,61d) at 40℃ were determined. It revealled that PBDEs concentration in indoor public places was related to different indoor materials. PBDEs in Internet cafes mainly come from fiber wallpaper and wires, PBDEs in shopping malls and book cities mainly come from ceramic flame-retardant cloth and blended carpets, PBDEs in the building materials markets mainly come from thermal insulation cotton, circuit boards and plastic wallpaper, and PBDEs in the electronic markets mainly come from fiber flame retardant cloth and wires.

Key words： PBDEs pollution characteristics source material coefficient of volatile strengths half-life

Received: 18 August 2020

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	Articles by authors
	JIN Man-tong
	LU Zhu-hao
	LI Lin-jun
	SHEN Xue-you
	ZHANG Shun-fei

Cite this article:

JIN Man-tong,LU Zhu-hao,LI Lin-jun等. Pollution characteristics and source analysis of PBDEs in dust in typical public places[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(4): 1878-1885.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I4/1878

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