来自电子废物拆卸设施和周边地区的表面土壤中的双化学物质:空间分布和健康风险
Lei Zhao1, Fengli Zhou1, Shuyue Wang1
1Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou 510632, China.
Toxics
|June 26, 2024
概括
电子垃圾场污染了土壤的双化学品 (BPs). 虽然风险一般较低,但工人接触双A (BPA) 需要持续监测.
科学领域:
- 环境化学环境化学
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
背景情况:
- 电子废物 (电子废物) 拆卸设施是双化学品 (BP) 的重要来源.
- 了解电子垃圾场附近的土壤中BP的存在,分布和暴露风险至关重要.
研究的目的:
- 调查电子废物拆卸设施和周边地区的表面土壤中双化学品 (BPs) 的存在,分布和暴露风险.
- 识别特定的BP,包括新的类似物和化合物,并量化其度.
主要方法:
- 使用非向查与向分析相结合,以检测和量化土壤样本中的BP.
- 分析了电子废物拆卸设施和相邻地区的表面土壤,以评估空间分布.
- 通过口服摄入的BP的估计每日摄入量对于不同的人口群体.
主要成果:
- 确定了14种BP,包括双A (BPA),四博双A (TBBPA) 和双F (BPF),在电子废物土壤中的度较高 (中位数为6970 ng/g),与周围地区相比 (中位数为197 ng/g).
- 观察到TBBPA及其除产品度的下降,与周边地区电子废物设施的距离越来越远.
- 工人和居民估计的每日摄入量通常低于可容忍的每日摄入量,除了工人的BPA.
结论:
- 电子废物拆卸设施已被证实是BP广泛污染土壤的来源.
- 目前的土壤污染水平对电子废物工作人员和当地居民造成的健康风险很小,BPA有一些例外.
- 建议进行持续的环境监测,特别是在电子废物工作人员中接触双A (BPA).
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