POWRE: Exploratory Research to Determine the Feasibility of Using Stable Isotope Franctionation to Track the Long-Range Atmospheric Transport of Persistent Organic Pollutants

POWRE：确定使用稳定同位素分馏追踪持久性有机污染物远距离大气迁移的可行性的探索性研究

• 批准号: 0074948
• 负责人: Rebecca Dickhut
• 金额: $ 7.5万
• 依托单位: College of William & Mary Virginia Institute of Marine Science
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074948&HistoricalAwards=false
• 关键词: POWRE; Exploratory; Research; Determine; Feasibility

Various persistent organic pollutants (POPs) are suspected of undergoing atmospheric transport to regions far removed from the area of initial release. The objective of this POWRE research project is to develop a technique for distinguishing such long-range from short-range sources of POPs, based on the fractionation of stable isotopes during transport. This project is a feasibility study using a model POP, the pesticide gamma-hexachlorocyclohexane, which is used in various low latitude source regions and has been shown to be abundant in polar regions. The approach will be to conduct a tracer release experiment using isotopically-labelled (13C and 2H) gamma-hexachlorocyclohexane in order to examine its isotopic fractionation during transport.

各种持久性有机污染物（POPs）被怀疑正在经历大气输送到远离最初释放区域的地区。这项power研究项目的目标是根据稳定同位素在运输过程中的分馏，发展一种区分持久性有机污染物远距离来源和短程来源的技术。该项目是一项可行性研究，使用一种模式POP，即农药γ -六氯环己烷，该农药在各种低纬度来源地区使用，并已证明在极地地区含量丰富。该方法将使用同位素标记的（13C和2H） γ -六氯环己烷进行示踪剂释放实验，以检查其在运输过程中的同位素分馏。