Soil-atmosphere exchange of persistent organic pollutants: Determination of concentration gradients with passive samplers

持久性有机污染物的土壤-大气交换：使用被动采样器测定浓度梯度

• 批准号: 261967761
• 负责人: Professor Dr. Peter Grathwohl
• 金额: --
• 依托单位: College of Charleston
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/261967761?language=en
• 关键词: Soil; atmosphere; exchange; persistent; organic

The present work aims to advance the understanding of the role of soils in controlling the environmental transport of persistent organic pollutants such as polycyclic aromatic hydrocarbons. Passive samplers developed to detect concentration (or fugacity) gradients of contaminants between soils and the atmosphere will enable measurement of whether the direction of contaminant movement is into or out of the soil in order to answer the question whether soils are sinks or sources for pollutants. Seasonal patterns of contaminant exchange behavior will be linked to environmental parameters, such as soil water content, sorption capacity, temperature, etc. Contrasting the flux behavior at monitoring locations that have different soil characteristics and contaminant input histories will aid in the identification of the key landscape features influencing contaminant mobility. Coordination of this study with ongoing efforts by partner institutions to understand flux within the atmospheric boundary layer by eddy covariance methods will augment data interpretive abilities and lead to estimations of time-averaged soil-atmospheric flux of these contaminants.

目前的工作旨在促进对土壤在控制多环芳烃等持久性有机污染物的环境迁移方面的作用的了解。被动采样器的开发，以检测土壤和大气之间的污染物的浓度（或逸度）梯度，将能够测量污染物的移动方向是进入或离开土壤，以回答这个问题，土壤是汇还是污染源。污染物交换行为的季节性模式将与环境参数，如土壤含水量，吸附能力，温度等，在监测位置，有不同的土壤特性和污染物输入的历史对比通量行为将有助于识别的关键景观特征影响污染物的流动性。 这项研究与合作机构正在进行的努力，以了解通量在大气边界层内的涡度协方差方法的协调将增强数据的解释能力，并导致这些污染物的时间平均土壤-大气通量的估计。

项目成果

Soil-Atmosphere Exchange of PAHs: The Determination of Concentration Gradients with Passive Samplers

• DOI: 10.15496/publikation-32689
• 发表时间: 2019-08
• 作者: Jana Meierdierks