Assessment of Occupational Exposure to Manganese and Other Metals in Welding Fumes by Portable X-ray Fluorescence Spectrometer
Assessment of Occupational Exposure to Manganese and Other Metals in Welding Fumes by Portable X-ray Fluorescence Spectrometer
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DOI：
10.1080/15459624.2010.485262
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发表时间：
2010-01-01
影响因子：
2
通讯作者：
Weisskopf, Marc G.
中科院分区：
文献类型：
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作者：
Laohaudomchok, Wisanti;Cavallari, Jennifer M.;Weisskopf, Marc G.
焊接烟尘样品的元素分析可以使用几种基于实验室的技术来完成。然而，便携式测量技术可以提供几个优点。在这项研究中，我们试图确定便携式x射线荧光光谱仪（XRF）是否适合在37毫米聚四氟乙烯滤光片上分析五种金属（锰、铁、锌、铜和铬）。使用这种过滤器安装在旋风上，与个人泵一致，从一组暴露在焊接烟雾中的锅炉中收集了重量样品。我们评估了这些金属在过滤器上均匀沉积的假设，以及传统实验室XRF和便携式XRF获得的每种金属测量结果之间的关系。对于所有感兴趣的五种金属，在同一过滤区域使用便携式XRF重复测量显示出良好的一致性（几乎所有金属的可靠性比等于或接近1.0）。从每个过滤器的三个不同区域采集的便携式XRF读数没有显著差异（p值= 0.77至0.98）。这表明，富金属的PM2.5均匀沉积在用这种重量法收集的样品上。对于两种XRF的比较，便携式XRF的结果具有良好的相关性，并且与实验室XRF的结果具有很高的预测性。铬、锰和铁的Spearman相关系数分别为0.325、0.995和0.998。平均差异占平均实验室XRF读数的百分比也很小(
Elemental analysis of welding fume samples can be done using several laboratory-based techniques. However, portable measurement techniques could offer several advantages. In this study, we sought to determine whether the portable Xray fluorescence spectrometer (XRF) is suitable for analysis of five metals (manganese, iron, zinc, copper, and chromium) on 37-mm polytetrafluoroethylene filters. Using this filter fitted on a cyclone in line with a personal pump, gravimetric samples were collected from a group of boilermakers exposed to welding fumes. We assessed the assumption of uniform deposition of these metals on the filters, and the relationships between measurement results of each metal obtained from traditional laboratory-based XRF and the portable XRF. For all five metals of interest, repeated measurements with the portable XRF at the same filter area showed good consistency (reliability ratios are equal or close to 1.0 for almost all metals). The portable XRF readings taken from three different areas of each filter were not significantly different (p-values = 0.77 to 0.98). This suggested that the metal rich PM2.5 deposits uniformly on the samples collected using this gravimetric method. For comparison of the two XRFs, the results from the portable XRF were well correlated and highly predictive of those from the laboratory XRF. The Spearman correlation coefficients were from 0.325 for chromium, to 0.995 for manganese and 0.998 for iron. The mean differences as a percent of the mean laboratory XRF readings were also small (