Energy dispersive X-ray fluorescence analysis EDXRF

Nowadays, iodine is measured using inductively coupled plasma mass spectrometry (ICP-MS) and energy-dispersive X-ray fluorescence analysis of iodine (EDXRF) (Zaichick and Zaichick 1999). The detection limit of iodine is 3 Jigg for 30-minute measurements of 10-15 mg specimens of fresh tissues, and 10-minute measurements of40- 60 specimens of homogenized dry tissues. 

Enamel and bone, strontium isotope analysis, 102-104 Energy dispersive spectrometry (EDS), scanning electron microscopy, Seip textiles, 35 Energy dispersive X-ray fluorescence (EDXRF), elemental analyses copper-based coins, 231-245 copper coins, Herodian prutah, 246-257... 

Tungsten is principally found in the form of WO ions in biological media. Neutron activation analysis (NAA) is the most commonly used technique for its total determination ( W half-life 24 hr). Other methods such as atomic absorption spectrometry (AAS) or energy-dispersive X-ray fluorescence (EDXRF) are used more rarely. Moreover, no result about W speciation has been reported. 

X-ray Fluorescence (XRF) is a common technique for sulfur determination in hydrocarbon oils. At-line and laboratory XRF analysis is covered in the ASTM standard test methods for sulfur in petroleum products ASTM Standard Method D 4294 (for Energy Dispersive XRF, EDXRF) [1] and ASTM Standard Method D 2622 (for Wavelength Dispersive XRF, WDXRF) [2]. Polarized EDXRF [3] is also used at-line for the determination of very low sulfur content (<10 ppm sulfur) in diesel and gasoline fuels. 

TXRF is a descendant of conventional energy-dispersive XRF, however, with detection limits improved by 4-5 orders of magnitude, to date below KT g. It is important to point out that the TXRF technique differs fundamentally frcnn classical X-ray fluorescence (EDXRF), in sample preparation, calibration, data analysis and detection performance, as well as in the objects under investigation. 

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