华东师范大学学报（自然科学版） >

2024 , Vol. 2024 >Issue 6: 161 - 177

DOI: https://doi.org/10.3969/j.issn.1000-5641.2024.06.014

生态风险与管控

合肥市土壤中卤代阻燃剂的赋存特征及风险评估

  • 杨丁业 ,
  • 杨静 ,
  • 金芮合 ,
  • 丁方方 ,
  • 张雨欣 ,
  • 刘敏
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  • 华东师范大学 地理科学学院 地理信息科学教育部重点实验室, 上海　200241
杨　静, 女, 工程师, 研究方向为新污染物环境行为及风险评估. E-mail: jyang@geo.ecnu.edu.cn
刘　敏, 男, 教授, 博士生导师, 研究方向为环境地理学. E-mail: mliu@geo.ecnu.edu.cn

收稿日期: 2024-07-30

  录用日期: 2024-09-05

  网络出版日期: 2024-11-29

基金资助

国家自然科学基金(42230505); 国家重点研发计划 (2020YFC1806700)

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Occurrence characteristics and risk assessment of halogenated flame retardants in soils of Hefei City

  • Dingye YANG ,
  • Jing YANG ,
  • Ruihe JIN ,
  • Fangfang DING ,
  • Yuxin ZHANG ,
  • Min LIU
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  • Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences, East China Normal University, Shanghai　200241, China

Received date: 2024-07-30

  Accepted date: 2024-09-05

  Online published: 2024-11-29

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摘要

在合肥市不同区域采集了31个土壤样品, 利用气相色谱−质谱仪测定土壤中卤代阻燃剂的含量, 并对其组成特征、空间分布、来源进行解析. 研究结果显示, 合肥市表层土壤中总的多溴联苯醚 (polybrominated diphenyl ethers, ∑23PBDEs)、替代型溴代阻燃剂 (alternative brominated flame retardants, ∑22ABFRs) 和得克隆及其类似物 (dechloranes, ∑11DECs) 浓度均值分别为(6.490 ± 13.221)、(26.375 ± 101.928)和(0.815 ± 0.760) ng/g. 十溴二苯乙烷 (DBDPE) 是替代型溴代阻燃剂中最主要的同系物, 占比高达84.4%. 空间分布上, 卤代阻燃剂浓度的高值多位于城市开发区、高新区等制造业集中地. 源解析表明, 其主要来源为商业多溴联苯醚, 其次来源于阻燃剂的生产、运输及其环境降解过程. 基于危险指数法估算的非致癌风险评价结果表明, 研究区内目标物的非致癌风险指数均小于1, 在可接受范围内, 无非致癌风险.

关键词： 土壤; 卤代阻燃剂; 空间分布; 风险评估

本文引用格式

杨丁业 , 杨静 , 金芮合 , 丁方方 , 张雨欣 , 刘敏 . 合肥市土壤中卤代阻燃剂的赋存特征及风险评估[J]. 华东师范大学学报（自然科学版）, 2024 , 2024(6) : 161 -177 . DOI: 10.3969/j.issn.1000-5641.2024.06.014

Abstract

The contents of halogenated flame retardants (HFRs) in 31 surface soil samples collected from different areas of Hefei City were measured by gas chromatography-mass spectrometry. Their composition characteristics, spatial distribution, and sources were explored. The results showed that the mean concentrations of ∑23PBDEs, ∑22ABFRs, and ∑11DECs in the surface soils of Hefei City were (6.490 ± 13.221), (26.375 ± 101.928), and (0.815 ± 0.760) ng/g, respectively. DBDPE is the main homologue among alternative flame retardants, accounting for 84.4%. In terms of spatial distribution, the hotspots of HFRs were mostly located in manufacturing concentrated areas, such as urban development zones and high-tech zones. Source analysis revealed that the use of commercial polybrominated diphenyl ethers and alternative flame retardants in the study area were the main emission sources, followed by the production, transportation, and environmental degradation process of HFRs. Non-carcinogenic risk assessment was carried out based on hazard index method. The results showed that the non-carcinogenic risk index of the target objects in the study area were less than 1, which were within the acceptable range, indicating that there was no non-carcinogenic risk.

Key words： soils; halogenated flame retardants; spatial distribution; risk assessment

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