Anthony R. Byrne

TL;DR: In this paper, the certification of a second-generation biological reference material (freeze-dried human serum) for trace element determinations is described, which was prepared under rigorously controlled conditions to avoid extraneous additions.

TL;DR: Using various chromatographic techniques (size exclusion, anion exchange, and cation exchange) combined with several detectors (neutron activation analysis and atomic fluorescence spectrometry), an attempt was made to characterize selenium compounds in some edible, selenum-accumulating mushrooms (Albatrellus pes-caprae and Boletus edulis).

TL;DR: A method is described for the neutron activation analysis or arsenic and antimony simultaneously in biological materials at submicrogram level, based on the differences in the extraction behaviour of the iodides from sulphuric acid-potassium iodide medium with toluene.

TL;DR: An arsenic speciation system comprising liquid chromatography and purge and trap-gas chromatography (PT-GC) interfaced with atomic fluorescence spectrometry (AFS) is described in this article.

TL;DR: In this article, a radiochemical neutron activation analysis method for simultaneous determination of these elements in a single sample was developed based on the double irradiation LICSIR technique, where the sample is ignited in an oxygen flask and iodine and selenium are sequentially and selectively extracted as elemental iodine and 5-nitro-2,1,3 benzoselena diazole chelate.