海洋大气气溶胶的采集和中子活化分析的应用

Sampling and application of neutron activation analysis for aerosols in the marine atmosphere

本工作应用带有风向风速自动控制的M241大容量空气颗粒采样器,采集了海洋大气中的气溶胶,采用中子活化分析方法,分析了样品中的重金属元素。结果表明,该采样系统具有较准确的流量测定,较均匀的样品捕集,适应于海洋大气气溶胶样品分析,中子活化分析可同时测定海洋大气中Na、Al、V 等不同来源指示元素。

A M-241 high volume air particle sampler with wind control was used to collected aerosols in themarine atmosphere.A neutron activation analysis was also applied to measure metals in the samples.The results show that the sampler could be adopted to areosol sampling for marine air study with rela-tive accurate flow determination and good uniform distribution of concentrations of metals in the filtersamples.NAA could be used to simultaneously measure Na,Al,and V as the source indicatiors.