Author/Editor		Šlejkovec, Zdenka; van Elteren, Johannes T; Byrne, Anthony R; de Goeij, Jeroen JM
Title		Separation of radiolabelled arsenic compounds produced by neutron irradiation of organoarsenic compounds
Type		članek
Source		Anal Chim Acta
Vol. and No.		Letnik 380
Publication year		1999
Volume		str. 63-71
Language		eng
Abstract		Results are presented for the separation of radiolabelled arsenic compounds obtained by the irradiation of organoarsenic compounds in a nuclear reactor. Previously developed chromatographic techniques with element-specific detection were used and further improved to measure the 76As activities and As concentrations of the arsenic-containing decomposition products fonned. Since the recoil energy available during irradiation is high enough to break molecular bonds, a range of radiolabelled arsenic compounds were produced, depending on the conditions (type of compound, matrix and irradiation time). The most extensively investigated compound, viz. arsenobetaine, yielded, when irradiated as solid material for 60 min, 11 radiolabelled arsenic compounds, of which eight could be identified. Theoretically, an overall specific activity of 3.7 GBq g-1 was expected, but experimentally specific activities were found from 0.5 GBq g-1 (for arsenobetaine) to more than 3800 GBq g-1 (for arsenate).
Descriptors		ARSENICALS ORGANOMETALLIC COMPOUNDS PRODUCT LABELING NEUTRONS CHROMATOGRAPHY, LIQUID SPECTROMETRY, FLUORESCENCE NUCLEAR REACTORS CHROMATOGRAPHY, ION EXCHANGE