Development and certification of the new NIES CRM 28: urban aerosols for the determination of multielements
Development and certification of the new NIES CRM 28: urban aerosols for the determination of multielements
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DOI：
10.1007/s00216-008-2076-y
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发表时间：
2008-07-01
影响因子：
4.3
通讯作者：
Nishikawa, Masataka
中科院分区：
文献类型：
--
作者：
Mori, Ikuko;Sun, Zijie;Nishikawa, Masataka
日本国家环境研究所(NIES)在实验室网络使用多种方法进行分析的基础上，开发了一种新的环境认证标准物质，用于测定气溶胶颗粒物中的多元素。这些物质的来源是北京市中心一栋建筑的中央通风系统中的过滤器收集的大气颗粒物。该材料的均质性和稳定性足以用作标准物质。材料中元素质量分数的值是根据参与实验室的分析结果进行统计确定的。获得了18个标准值和14个参考值。利用图像分析软件从显微图像中获得99%的颗粒直径小于10微米，表明材料中几乎所有的颗粒都可以被归类为空气动力学直径小于或等于10微米的颗粒。该材料的化学成分和粒度分布与北京采集的真品气溶胶相近。NIES CRM 28适合用于分析质量控制和评估用于分析气雾剂的方法，特别是在东北亚城市环境中收集的那些方法。
A new environmental certified reference material (CRM) for the determination of multielements in aerosol particulate matter has been developed and certified by the National Institute for Environmental Studies (NIES), Japan, based on analyses by a network of laboratories using a wide range of methods. The origin of the material was atmospheric particulate matter collected on filters in a central ventilating system in a building in Beijing city centre. The homogeneity and stability of this material were sufficient for its use as a reference material. Values for elemental mass fractions in the material were statistically determined based on the analytical results of the participating laboratories. Eighteen certified values and 14 reference values were obtained. The diameters, obtained from a micrographic image using image analysis software, of 99% of the particles were less than 10 mu m, demonstrating that almost all the particles in the material could be classified as particles of 10 mu m or less in aerodynamic diameter. The chemical composition and particle size distribution of this material were close to those of an authentic aerosol collected in Beijing. NIES CRM 28 is appropriate for use in analytical quality control and in the evaluation of methods used in the analysis of aerosols, particularly those collected in urban environments in northeast Asia.