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

各种持久性有机污染物(POPs)被怀疑在大气中向远离初始释放区的地区输送。POWRE研究项目的目标是开发一种技术，以稳定同位素在运输过程中的分馏为基础，区分这种持久性有机污染物的长距离和短程来源。该项目是一项可行性研究，使用的是持久性有机污染物模型农药伽马-六氯环己烷，该农药在各种低纬度来源地区使用，并已被证明在极地地区大量使用。该办法将使用同位素标记的(13C和2H)伽马-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情况。

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.