Quantitative energy-dispersive x-ray fluorescence analysis of liquids using partial least-squares regression

✍ Scribed by P. Lemberge; P. J. Van Espen

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 134 KB
• Volume: 28
• Category: Article
• ISSN: 0049-8246
• DOI: 10.1002/(sici)1097-4539(199903/04)28:2<77::aid-xrs312>3.0.co;2-c

✦ Synopsis

Energy-dispersive x-ray Ñuorescence in combination with partial least-squares regression (PLSR) was used to determine nickel, copper and arsenic in aqueous solutions. Di †erent spectrum pre-processing methods (square root and logarithmic transformation and top hat Ðltering) were used prior to the PLSR calibration. An accuracy of better than 5% was obtained. The e †ect of the Rayleigh and Compton scatter peaks and the continuum on the performance of the PLSR method was investigated. The PLSR method was compared with the method of Lucas-Tooth and Price and showed similar results.