一个被动采样器用于同步测量沉积物孔水中的无机和有机污染物:配置和现场应用
Pei Lei1, Mingying Chen2, Nan Rong3
1School of Environment, Nanjing Normal University, Nanjing 210023, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Journal of environmental sciences (China)
|November 3, 2023
概括
一种新型的被动采样器可以同时在现场测量各种沉积物孔水污染物. 这项技术揭示了沉积物污染物的作用如何转变,为综合污染效应提供了新的见解.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 地质化学 地质化学
背景情况:
- 评估沉积物孔水中的污染物生物可用性和风险需要在现场测量并存污染物.
- 目前在孔水中同时分析无机和有机污染物的方法尚不发达.
研究的目的:
- 开发和验证一种被动采样仪,用于同步地测量沉积物孔水中的无机和有机污染物.
- 为了研究污染物动态和沉积物-污染物随时间的相互作用.
主要方法:
- 开发一个"I形"被动采样器,集成无机/有机采样单元.
- 平衡透析理论和动力/平衡吸附原理的应用.
- 实验室对平衡时间和采样速率进行校准,然后在现场进行孔水分析.
主要成果:
- 被动采样器成功地实现了对无机 (例如,金属) 和有机污染物 (例如PAHs) 的同步测量.
- 以厘米级分辨率的垂直污染物概况在现场获得.
- 在采样过程中观察到特定污染物的沉积物作用的变化 (例如,从水槽到来源).
结论:
- 开发的被动采样器可用于同时对各种沉积物孔水污染物的现场分析.
- 这种方法为了解污染物生物可用性,风险评估和综合污染影响提供了关键数据.
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