Intercomparison study of six HTDMAs: results and recommendations
Intercomparison study of six HTDMAs: results and recommendations
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DOI：
10.5194/amt-2-363-2009
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发表时间：
2009-01-01
影响因子：
3.8
通讯作者：
Weingartner, E.
中科院分区：
文献类型：
--
作者：
Duplissy, J.;Gysel, M.;Weingartner, E.
我们报告了六种不同吸湿性的串联式差示迁移率分析仪(HTDMA)的相互比较。这些HTDMA在世界各地被用于实验室实验和现场活动，以测量气溶胶颗粒的吸水率，并且从未进行过相互比较。在分析了不同仪器设计的优缺点后，给出了仪器的标定、检定和数据分析方法。对雾化的硫酸铵以及雾化室产生的二次有机气溶胶进行了测量。讨论了仪器与理论之间的一致性和差异，并给出了标准仪器的最终建议，作为实验室或野外实验的基准，以确保高质量的HTDMA数据。
We report on an intercomparison of six different hygroscopicity tandem differential mobility analysers (HTDMAs). These HTDMAs are used worldwide in laboratory experiments and field campaigns to measure the water uptake of aerosol particles and have never been intercompared. After an investigation of the different design of the instruments with their advantages and inconveniencies, the methods for calibration, validation and data analysis are presented. Measurements of nebulised ammonium sulphate as well as of secondary organic aerosol generated from a smog chamber were performed. Agreement and discrepancies between the instruments and to the theory are discussed, and final recommendations for a standard instrument are given, as a benchmark for laboratory or field experiments to ensure a high quality of HTDMA data.