CAREER: Atmosphere/Snow/Ice Interactions: Photochemistry of Organic Pollutants in Arctic Snow and Ice

这个职业项目的目标是研究冰雪中持久性有机污染物的循环和光化学。这项研究将集中在大气-冰冻圈有机污染物的相互作用以及冰雪中污染物的光化学转化。将进行实验室和实地研究，以探索可能降解有机化合物的光化学过程，并解决此类过程对环境的影响。将在实验室进行辐照实验，以阐明降解机理和产物。将研究直接和间接光化学途径，以及其他变量，如波长、pH、温度和雪粒大小。将在北极(阿拉斯加巴罗)进行光化学实验，以确定实验室中观察到的化学物质是否也在自然条件下发生。将在现场测量空气、雪和冰中的有机污染物，以更好地了解空气/雪/冰的分配过程。该项目将有助于教育本科生和硕士学生(通过参与积极的实验室和实地研究)和K-12学生和普通公众(通过外展努力)。课程开发活动将针对9-12年级的学生，特别是在少数民族人口较多的城市学区。该项目还将涉及与巴罗的阿拉斯加因努皮亚特人爱斯基摩人进行接触。PI将指导一名博士后研究员，目标是招聘有兴趣在以本科生为主的机构继续他或她的职业生涯的人。将努力招募代表人数偏低的少数群体参加研究和外联活动。本科生研究和9-12年级课程的评估也将进行。

The goal of this CAREER project is to study the cycling and photochemistry of persistent organic pollutants in snow and ice. The research will concentrate on atmosphere-cryosphere interactions of organic pollutants and photochemical transformations of pollutants occurring in snow and ice. Laboratory and field studies will be conducted to probe photochemical processes that may degrade organic compounds, and to address the environmental impact of such processes. Irradiation experiments will be conducted in the laboratory to elucidate the degradation mechanisms and products. Both direct and indirect photochemical pathways will be studied, along with other variables such as wavelength, pH, temperature, and snow grain size. Photochemistry experiments will be conducted in the Arctic (Barrow, Alaska) to determine if the chemistry observed in the laboratory also occurs under natural conditions. Organic pollutants in air, snow and ice will be measured in the field in an effort to better understand air/snow/ice partitioning processes.This project will help to educate undergraduate and master's students (via participation in active laboratory and field research) and K-12 students and the general public (via outreach efforts). Curriculum development activities will be aimed at students in grades 9-12, particularly in urban school districts with high minority populations. The project will also involve outreach to native Alaskan Inupiat Eskimos in Barrow. The PI will mentor a post-doctoral researcher, with the goal of recruiting someone interested in continuing his or her career at a predominantly undergraduate institution. Efforts will be made to recruit underrepresented minorities into the research and outreach activities. Assessment of undergraduate research and the Grade 9-12 curriculum will also be performed.