Combined Radiochemical-Neutron Activation Analysis Method for the Determination of Sulfur and Phosphorus in High Purity Paper and Beer.

Analytical Methods for Sulfur Determination in Glasses, Rocks, Minerals and Fluid Inclusions

“…Sulfur may be determined by measurement of 35 S (t 1/2 , 87 d) produced via neutron capture of 34 S (Bouten and Hoste 1962;Li and Filby 1983;Paul 2008), and by measurement of 32 P (t 1/2 , 14.28 d) formed via the 32 S(n, p) 32 P reaction (McCandless 1964;Souliotis 1964;Wayman 1964). Both nuclides are pure beta emitters, with maximum beta energies of 1.7 MeV for 32 P and 0.167 MeV for 35 S. Radiochemical separation of these nuclides from the sample matrix is necessary to avoid spectral interferences and to improve detection limits.…”

Determination of Nickel in Hydrogenated Fats by Neutron Activation Analysis.

“…Toluene was chosen as the suitable organic solvent because of its low solubility in water (6). To investigate the chemical yield of Ni with the toluene-nitric acid extraction, a synthetic experiment (10) was carried out using Ni65 radiotracer and precipitating Ni as Ni-DMG (dimethylglvoxime), which was then counted. Comparison of counting rates with those of an experiment done without the extraction step showed that both chemical yields were the same, approaching 100%.…”