Comparison of AAS, ICP-AES, PSA, and XRF in Determining Lead and Cadmium in Soil
| Autor: | Ky D. Nichols, John A. Palasota, Conrad A. Kuharic, Stanley N. Deming, William H. Cole, Daniel C. Hillman, Steven M. Pyle, Patricia M. Fitzpatrick, John M. Nocerino, Michael A. Watson, Josephine M. Palasota, Eric L. Miller |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 30:204-213 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es9502482 |
| Popis: | Samples from a hazardous waste site contaminated with lead and cadmium were analyzed by four independent laboratories, each using a different technique: atomic absorption spectroscopy (AAS), X-ray fluorescence (XRF) spectroscopy, inductively coupled plasma−atomic emission spectroscopy (ICP-AES), and potentiometric stripping analysis (PSA). The four data sets were retrospectively analyzed to (1) establish the magnitudes of uncertainty in the measurements, (2) evaluate the comparability of the four instrumental methods, and (3) determine if any significant correlations existed between individual sets of data. In general, the four techniques gave comparable results for the analysis of lead and cadmium, with the best agreement between PSA and AAS. Concentrations determined by PSA were higher than those measured by ICP-AES, AAS, and XRF, while concentrations determined by XRF were lower than or equal to recoveries determined by ICP-AES and AAS. Principal component analysis determined that the two major princi... |
| Databáze: | OpenAIRE |
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