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.

ATM-9707535 Saltzman，Eric S.迈阿密大学标题：Greenland Ice核心中的甲基溴化物的提取和分析极性冰核代表了对古氨基甲基溴化物的潜在档案。 此类数据将有助于限制甲基溴化物的生物地球化学循环以及理解其气候敏感性。 极性冰芯测量值还将有助于解释有关从极地FIRN提取的空气中甲基溴化物分布的最新观察结果。 该项目将包括从浅层和深格陵兰冰芯样品中提取空气以及使用电子捕获检测的气相色谱法分析甲基溴化物的开发技术，并具有质谱检测。 在102-103年的时间尺度上发展大气甲基溴化物的历史记录将导致新的见解，以了解大气中甲基溴化物浓度的自然变异范围及其与气候变化的关系。