Analysis of the Long Term Record of Arctic Airborne Particle Composition

这是对北极地区微量组分的重新研究 气溶胶，使用仪器中子活化分析（INAA） 法 这项技术非常敏感和强大， 能够确定大约四十种元素的浓度， 包括许多对环境至关重要的元素，如铝，锌， 砷和锑的浓度非常低。 作为第一优先事项，本研究将完成以下分析： 大气环境服务处获得的过滤样本 自1980年以来，加拿大在埃尔斯米尔岛，其次将 分析在Mould Bay和伊格卢利克获得的样本， 冬/春过渡期 北极霾的出现，气溶胶的总称 在对流层低层的浓度，达到季节性最大值 在冬末，当它在北极广泛传播时。 的 变化是两个季节性差异的结果， 北移，并在迁移过程中经历干湿交替 证词 多元因素分析，潜在来源 贡献函数和时间序列分析，结合空气 质量轨迹将提供平流模式， 我们对传输机制和大气的理解 从源头地区到加拿大北极的路径，并允许 调查这些国家的相对组成趋势， 北极气溶胶微量成分。

This is a renewed investigation of the trace constituents in arctic aerosols, using the Instrumental Neutron Activation Analysis (INAA) technique. The technique is extremely sensitive and powerful, capable of determining the concentration of about forty elements, including many environmentally crucial ones such as aluminum, zinc, arsenic and antimony that are present in very low concentrations. As a first priority, this study will complete the analysis of filtered samples obtained by the Atmospheric Environment Services of Canada on Ellesmere Island since 1980, and secondarily will analyze samples obtained at Mould Bay and Igloolik during the winter/spring transition. The occurrence of arctic haze, the general term for aerosol concentrations in the lower troposphere, reaches a seasonal maximum in late winter when it becomes widespread through the arctic. The variation is the result both of seasonal differences in the northward transport, and in the removal process through wet and dry deposition. Multivariate factor analysis, potential source contribution functions, and time series analyses, combined with air mass trajectories will provide advective patterns that will refine our understanding of the transport mechanism and atmospheric pathways from the source regions to the Canadian Arctic, and allow the investigations of trends in the relative composition of the arctic aerosol trace constituents.