State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China.
Mar Pollut Bull. 2023 Nov;196:115681. doi: 10.1016/j.marpolbul.2023.115681. Epub 2023 Oct 18.
Arsenic (As) pollution, is a global problem, threatening human health and ecological security, especially in the bay environment with dense population and human activities. Among potential pathways of As into the bay, submarine groundwater discharge (SGD) has not received adequate attention due to its invisibility. We determined As and Rn activity concentrations in different water mass. Spatial variation of dissolved As concentration in the groundwater was large and attributed to the adjacent local industries. By combining Rn mass balance modeling with As concentrations measured, the SGD-derived As fluxes was conservatively estimated to be 1310 kg As d and 5880 kg As d in the dry and wet seasons, respectively. The migration of arsenic may be enhanced by rainfall and dissolved carbon. The amount of SGD derived As input to the bay was greater than the total combined As input from river discharge, atmosphere, sewage drainage, and diffusion from sediment.
砷（As）污染是一个全球性问题，威胁着人类健康和生态安全，尤其是在人口密集、人类活动频繁的海湾环境中。在砷进入海湾的潜在途径中，由于其隐蔽性，海底地下水排放（SGD）尚未得到足够重视。我们确定了不同水体中的砷和氡活度浓度。地下水溶解砷浓度的空间变化很大，这归因于相邻的当地工业。通过将氡质量平衡模型与测量的砷浓度相结合，保守估计在旱季和雨季，SGD 产生的砷通量分别为 1310 千克砷/天和 5880 千克砷/天。降雨和溶解的碳可能会促进砷的迁移。进入海湾的 SGD 衍生砷输入量大于河流排放、大气、污水排放和沉积物扩散的总砷输入量的总和。
