Evaluation of methods for the separation of trimethylselenonium ion as a major, minor or general metabolite using neutron activation analysis

Autor: Blotcky, A., Claassen, J., Rack, E., Shoop, D.
Zdroj: Journal of Radioanalytical and Nuclear Chemistry; July 1994, Vol. 181 Issue: 2 p395-400, 6p
Abstrakt: Abstract: Trinethylselenonium (TMSe) ion was separated by dual-column ion-exchange chromatography and assayed by neutron activation analysis. The TMSe content of the selenium in human urine was found to be (14±2)%, consistent with literature values. An altemate, published, multi-step procedure employing Reineckate precipitation followed by decomposition/volatilization conversion of selenium into dimethylselenide, perchloric acid digestion into selenite and subsequent analysis employing inductively coupled plasma mass spectrometry (ICP-MS) was evaluated. A maximum recovery of TMSe was estimated at 32%. It has been suggested that losses in each step of a multi-step procedure yield low recoveries as reported in the literature.
Databáze: Supplemental Index