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Persistent Organic Pollutants in Alaska. New GC-MS Experiments and Experiences for College and Pre-College Students

阿拉斯加的持久性有机污染物。

基本信息

批准号：
0736946
负责人：
John Keller
金额：
$ 15万
依托单位：
University of Alaska Fairbanks Campus
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-11-15 至 2011-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0736946&HistoricalAwards=false
关键词：
Persistent Organic Pollutants Alaska.New

项目摘要

This project is introducing college and pre-college students in Alaska to the concepts and practices of chemical analysis, especially relating to the local occurrence of persistent organic pollutants (POPs). Alaska, because of its geographical location and cold climate, is particularly susceptible to deposition of organic pollutants from winds and ocean currents originating at lower latitudes. A new GC-MS instrument equipped with a sampling robot that automatically pre-concentrates pollutant compounds from environmental samples is being installed for student use. Four specific activities are underway: i) pre-college students at the university's summer Rural Alaska Honors Institute for Alaska Natives are using GC-MS and passive sampling techniques to identify and quantify Alaskan POPs; ii) in order to learn more about stable isotopes in nature first-year general chemistry students are studying volatile halogenated organics, which occur in trace amounts in drinking water; iii) organic chemistry students are identifying volatile organics in fragrant biological or commercial samples, and are applying detailed computational analysis to the data; and, iv) advanced chemistry majors are using GC-MS to measure the physical properties of POPs, which affect their distribution within the air-water-land system.

该项目正在向阿拉斯加的大学生和预科生介绍化学分析的概念和做法，特别是与持久性有机污染物在当地的出现有关的化学分析。阿拉斯加由于其地理位置和寒冷的气候，特别容易受到来自低纬度的风和洋流的有机污染物沉积的影响。一个新的GC-MS仪器配备了一个采样机器人，自动预浓缩污染物化合物从环境样品正在安装供学生使用。目前正在开展四项具体活动：（一）该大学为阿拉斯加土著人开设的夏季阿拉斯加农村荣誉研究所的大学预科学生正在使用气相色谱-质谱法和被动取样技术来确定和量化阿拉斯加持久性有机污染物;（二）为了更多地了解自然界中的稳定同位素，普通化学一年级学生正在研究挥发性卤化有机物，这种有机物在饮用水中存在痕量;三）有机化学专业的学生正在识别芳香生物或商业样品中的挥发性有机物，并对数据进行详细的计算分析;四）高级化学专业的学生正在使用GC-MS来测量持久性有机污染物的物理特性，这会影响其在空气-水-土地系统中的分布。