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<p>Dechlorane Plus (DP) is an emerging persistent organic pollutants, yet few studies have been conducted in China, especially in urban dust. DP was measured and detected in urban street dust samples collected from Shenyang City, China. Spatial distribution, potential sources, and health risks of DP in urban dust were assessed in this study. Results show that anti-DP was easier to detect than syn-DP due to the proportion of DP production, stability, migration capability, and physical and chemical properties of DP isomers. Mean ∑DP, syn-DP, and anti-DP concentrations were 25.95 ± 11.59&#xa0;ng/g, 5.71 ± 3.78&#xa0;ng/g, and 21.57 ± 9.19&#xa0;ng/g, respectively. Results suggested that levels of DP pollution were influenced by land-use type, and differences in DP between the two major transportation networks in the city (e.g., first-ring road and second-ring road) were not significant. Results of correlation analysis and fractional abundance of DP isomers were consistent, indicating that PD in urban dust of Shenyang City is mainly derived from commercial DP products. Although the health risks of DP in the dust of Shenyang City were within acceptable levels, results of exposure doses and health risks suggested that children were more susceptible to the impacts of DP than adults, with oral ingestion being a more important exposure pathway than dermal absorption.</p>

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Characterization, distribution, sources and health risks of Dechlorane Plus (DP) in urban street dust of Shenyang City, China

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Hui Wang,
  • Siyi Yu,
  • Tony R. Walker,
  • Xuetang Huang,
  • Hairu Chang,
  • Hao Wu,
  • Xiaoxu Wang,
  • Yinggang Wang

摘要

Dechlorane Plus (DP) is an emerging persistent organic pollutants, yet few studies have been conducted in China, especially in urban dust. DP was measured and detected in urban street dust samples collected from Shenyang City, China. Spatial distribution, potential sources, and health risks of DP in urban dust were assessed in this study. Results show that anti-DP was easier to detect than syn-DP due to the proportion of DP production, stability, migration capability, and physical and chemical properties of DP isomers. Mean ∑DP, syn-DP, and anti-DP concentrations were 25.95 ± 11.59 ng/g, 5.71 ± 3.78 ng/g, and 21.57 ± 9.19 ng/g, respectively. Results suggested that levels of DP pollution were influenced by land-use type, and differences in DP between the two major transportation networks in the city (e.g., first-ring road and second-ring road) were not significant. Results of correlation analysis and fractional abundance of DP isomers were consistent, indicating that PD in urban dust of Shenyang City is mainly derived from commercial DP products. Although the health risks of DP in the dust of Shenyang City were within acceptable levels, results of exposure doses and health risks suggested that children were more susceptible to the impacts of DP than adults, with oral ingestion being a more important exposure pathway than dermal absorption.