Inter-laboratory comparison of air particulate monitoring data

被引:18
作者
Nejedly, Z
Campbell, JL
Teesdale, WJ
Dlouhy, JF
Dann, TF
Hoff, RM
Brook, JR
Wiebe, HA
机构
[1] Univ Guelph, Guelph, ON N1G 2W1, Canada
[2] Environm Technol Ctr, Ottawa, ON, Canada
[3] Ctr Atmospher Res Expt, Egbert, ON, Canada
[4] Atmospher Environm Serv, Downsview, ON, Canada
来源
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION | 1998年 / 48卷 / 05期
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1080/10473289.1998.10463698
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This paper compares three analytical methods that are often used to analyze composition of atmospheric aerosol: Ion Chromatography (IC), Proton Induced X-ray Emission (PIXE), and X-Ray Fluorescence (XRF). Three monitoring studies are discussed: (1) a comparison of air particulate data collected by several independent sampler/analytical technique suites run by different laboratories; (2) a study involving two identical samplers and a single suite of analytical techniques; and (3) analysis of identical aerosol samples by two different techniques (XRF vs. PIXE). While the XRF versus PIXE project shows a very good agreement for most elements, the first interlaboratory study demonstrates the "real-life" noiseintroduced into the final data set by various sampling complications and different collection characteristics of the samplers used. The XRF versus PIXE study also revealed an unexplained deviation in measured sulphur concentrations for very lightly loaded samples. In the five-sampler comparison, two data sets provided by IC were approximately 20% lower than the three data sets obtained by PIXE and XRF. When two identical IMPROVE-compatible samplers were used and samples were subjected to similar procedures and the same analytical techniques, the variability between the two air concentration data sets significantly decreased.
引用
收藏
页码:386 / 397
页数:12
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