关于大气,陆地和水生生态系统中污染的全面洞察,这些生态系统围绕着一个典型的煤采矿区
Lulu Mao1, Wenbo Ren1, Yang Tang2
1State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
Journal of hazardous materials
|March 2, 2024
概括
在河水,土壤和空气中,煤开采的 (Hg) 污染率很高. 大气沉积显著影响土壤积,对儿童和食用蔬菜构成风险.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 环境毒理学环境毒理学
背景情况:
- 煤采矿区是由于密集的工业活动而造成 (Hg) 污染的热点.
- 了解的环境行为和相关风险对于有效的污染管理至关重要.
研究的目的:
- 为了全面调查 (Hg) 含量在一个煤矿区内的各种环境组件.
- 分析Hg环境行为,并评估Hg相关的健康风险在西冈山 (XKS) 地区.
- 确定污染的主要来源和途径.
主要方法:
- 在河水,沉积物,土壤,PM10,尘埃落下,蔬菜和玉米中的总 (THg) 的量化.
- 用土壤和尘埃落下的 δ202Hg 值对的同位素分析.
- 应用二元混合模型来识别源和大气沉积流量.
主要成果:
- 在河水,沉积物,土壤,PM10,灰尘和农产品中发现了高THg度.
- 在XKS的工业活动显著增加了环境样本中的THg和 δ202Hg值.
- 大气沉积被确定为表面土壤中积的主要贡献者,沉积流量很大.
- 与土壤相比,沉积物表现出更高的动态Hg风险.
- 儿童面临的多重暴露的健康风险比成年人更高,叶蔬菜的消费是一个值得关注的问题.
结论:
- 在反煤采矿区的工业活动导致环境组件中广泛的污染.
- 大气沉积在土壤中的积累中起着关键作用.
- 沉积物带来动态风险,特定的饮食路径 (叶菜) 和脆弱人群 (儿童) 需要专注于风险管理.
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