大气颗粒物水溶性离子计量技术研究概述

Metrological Investigations on Water-Soluble Ions in Atmospheric Particulate Matter

水溶性离子是大气颗粒物的主要组分,是颗粒物化学组分监测与来源解析的关键指标。介绍了大气颗粒物水溶性离子的离线和在线监测方法、仪器设备和测量标准,分析了离线和在线监测计量技术与规程规范的现状,提出了离线监测中滤膜样品前处理环节存在标准物质缺失,以及在线监测中计量方法、标准物质和标准装置存在大量空白等问题。针对上述问题,对计量研究的发展方向进行了展望。

Water-soluble ions are the main components of atmospheric particulate matter, and play a key role in the source appointment of particulate matters. This paper reviews offline and online monitoring methods, instruments and measurement standards for water-soluble ions in atmospheric particulate matter, analyzes the current status of offline and online monitoring measurement technologies and protocols, and presents the problems such as the lack of reference materials in the pre-treatment of filter membrane samples in offline monitoring, and the large number of gaps in measurement methods, reference materials and standard devices in online monitoring. In view of the above problems, the development direction of metrology research is prospected.