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土壤排放和吸入健康风险受到各种土地覆盖的影响

Ying Wang¹, Xuemin Ma¹, Yue Wang¹

¹State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100020, China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100020, China.

|October 9, 2024

概括

用粘土和水泥等低透性材料覆盖土壤,或种植植植物,显著减少排放和相关的吸入健康风险. 本研究量化了这些减少,以实现有效的环境修复.

科学领域:

环境科学环境科学
环境化学环境化学
风险评估风险评估

背景情况:

准确量化土壤挥发性有机化合物 (VOCs) 流量对于评估吸入健康风险和指导修复策略至关重要.
土地覆盖面对土壤的VOC排放有重大影响,因此需要对各种表面类型进行研究.
作为一种代表性的挥发性有机化合物,在受污染的地点造成吸入风险.

研究的目的:

为了研究不同土地覆盖面 (裸土,粘土,水泥,草地) 下的素释放模式.
评估各种覆盖物在减少土壤排放和吸入风险方面的有效性.
开发一种定制的方法来评估不同土地覆盖面的污染地点的吸入健康风险.

主要方法:

实验室流体室实验测量二醇的流量.
吸附管 (Tenax-TA) 用于气态的收集.
热溶解与气色谱-质谱学 (GC-MS) 结合用于样本分析.
与环境健康风险评估方法的整合.
数字模拟和应用研究.

主要成果:

的流量下降的顺序是:赤裸的土壤>粘土>草>水泥.
平均流量为1.22×10−2 (赤裸的土壤),4.37×10−3 (粘土),2.47×10−3 (草) 和9.88×10−4毫克米−2·s−1 (水泥).
低透性的覆盖物 (粘土,水泥) 在液态和吸附状态下保留了更多的,减少了挥发.
吸入致癌风险 (CR) 值在低透度覆盖物下降:裸土 (1.3 × 10-6), (1.22 × 10-6),水泥 (9.73 × 10-7).

结论:

像粘土和水泥这样的低透度覆盖物有效地降低了土壤二氧化碳排放和相关的吸入致癌风险.
植被也有助于减少流量和减轻健康风险.
开发的风险评估方法适用于具有不同土地覆盖面的污染现场.

关键词:

烯是一种烯.评估健康风险评估健康风险土地覆盖面土地覆盖面数字模拟数字模拟

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