title: Precision and accuracy of ST-EDXRF performance for As determination comparing with ICP-MS and evaluation of As deviation in the soil media.
abstract: The present study was conducted to (i) determine the precision and accuracy of arsenic measurement in soil samples using ST-EDXRF by comparison with the results of ICP-MS analyses and (ii) identify the relationship of As concentration with soil characteristics. For the analysis of samples, inductively coupled plasma mass spectrometry (ICP-MS) and energy dispersive X-ray fluorescence spectrometry (EDXRF) were performed. According to the results found in the soil samples, the addition of HCl to HNO3, used for the digestion gave significant variations in the recovery of As. However, spectral interferences between peaks for As and Pb can affect detection limits and accuracy for XRF analysis. When comparing the XRF and ICP-MS results a correlation was observed with R(2)=0.8414. This means that using a ST-EDXRF spectrometer, it is possible to achieve accurate and precise analysis by the calibration of certified reference materials and choosing an appropriate secondary target. On the other hand, with regard to soil characteristics analyses, the study highlighted that As is mostly anthropogenically enriched in the studied area.
authors: Recep Tayyip Erdoğan University, Department of Physics, TR-53100 Rize, Turkey. Electronic address: mutluradon@hotmail.com.
authors: Songul
authors: S
authors: Akbulut
authors: Ugur
authors: U
authors: Cevik
authors: Aydın Ali
authors: AA
authors: Van
authors: Karolien
authors: K
authors: De Wael
authors: Rene
authors: R
authors: Van Grieken
mesh_terms: D001151:Arsenic / Q000032:analysis*; D002138:Calibration; D004784:Environmental Monitoring; D057230:Limit of Detection; D015203:Reproducibility of Results; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D013052:Spectrometry, X-Ray Emission; D013054:Spectrophotometry, Atomic
chemical_list: D012987:Soil; D012989:Soil Pollutants; D001151:Arsenic
keywords: As; EDXRF; ICP-MS; Method comparison; Pollution; Soil characteristics