Fluorimetry blood samples

The uranium level in blood, urine, and hair of workers in phosphate mines in Syria was determined by fluorimetry (Othman 1993). The preparation of the blood samples included addition of an anticoagulant, nitric acid, and hydrogen peroxide, followed by centrifugation. The samples were then heated on a platinum plate and the flux mixture was added. Finally, the fluorescence of the samples was recorded. A correlation was found between the level of uranium in the bioassays and the number of years of employment in the mines (Othman 1993). 

Selenium determinations on 8 bovine samples were carried out in another survey [81]. Concentrations were in the range 0.2-14 J, mol/L. The methods employed were fluorimetry (61) hydride generation atomic absorption spectrometry (A AS) (23) graphite furnace A AS (6) gas chromatography (GC) (4) neutron activation analysis (NAA) (4) and X-ray fluorimetry (XRF) (2). There was little difference in the mean of Se results from fluorimetry and hydride-generation AAS (P > 0.05). Mean intralaboratory CV s from known replicates ranged from 4—14% for all samples. However, interlaboratory CVs were linked to blood Se levels and increased to 55% for... 

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