Extraction and Analysis of Methyl Bromide in Greenland Ice Cores

格陵兰冰芯中溴甲烷的提取与分析

• 批准号: 9707535
• 负责人: Warren De Bruyn
• 金额: $ 23.5万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-15 至 2000-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707535&HistoricalAwards=false
• 关键词: Extraction; Analysis; Methyl; Bromide; Greenland

ATM-9707535 Saltzman, Eric S. University of Miami Title: Extraction and Analysis of Methyl Bromide in Greenland Ice Cores Polar ice cores represent a potential archive for paleo-atmospheric methyl bromide. Such data will be useful in constraining the biogeochemical cycle of methyl bromide and in understanding its climatic sensitivity. Polar ice core measurements will also help explain recent observations regarding the distribution of methyl bromide in air extracted from polar firn. This project will consist of the extraction of air from shallow and deep Greenland ice core samples and the development techniques for the analysis of methyl bromide using gas chromatography with electron capture detection and gas chromatography with mass spectrometric detection. Developing historical records of atmospheric methyl bromide over time scales of 102-103 years would lead to new insight in to the range of natural variability in atmospheric methyl bromide concentrations and its relationship to climate change.

Am-9707535迈阿密大学Saltzman，Eric S.标题：格陵兰冰芯中甲基溴的提取和分析极地冰芯代表了古大气中甲基溴的潜在档案。这些数据将有助于限制甲基溴的生物地球化学循环，并有助于了解其对气候的敏感性。极地冰芯的测量还将有助于解释最近关于从极地冰雪提取的空气中甲基溴分布的观察结果。该项目将包括从格陵兰浅层和深层冰芯样品中提取空气，以及开发使用带有电子捕获检测的气相色谱和带有质谱检测的气相色谱分析甲基溴的技术。开发102-103年时间尺度上大气甲基溴的历史记录将使人们对大气甲基溴浓度的自然变化范围及其与气候变化的关系有新的认识。