Identification of arsenobetaine in sole, lemon sole, flounder, dab, carb and shrimps by field desorption and fast atom bombardment mass spectrometry
1983; Elsevier BV; Volume: 12; Issue: 2 Linguagem: Inglês
10.1016/0045-6535(83)90157-1
ISSN1879-1298
AutoresJ. B. Luten, G. Riekwel-Booy, J. van der Greef, M.C. ten Noever de Brauw,
Tópico(s)Electrochemical Analysis and Applications
ResumoOrgano-arsenic has been isolated from sole, lemon sole, flounder, dab, crab and shrimps by extraction or ion-exchange in combination with thin-layer chromatography. An alkaline digestion of the samples, followed by a reduction with sodiumborohydride leads to the formation of trimethylarsine. The behaviour of the organo-arsenic compound was very similar to that of synthesized arsenobetaine. Field desorption mass spectrometry (FDMS) can be used to identify arsenobetaine in the isolates. Sufficient purification by thin-layer chromatography is found to be a prerequisite for the detection of a protonated molecular ion of arsenobetaine. If this situation is not met acid enhanced FDMS or Fast Atom Bombardment mass spectrometry in high resolution can be used successfully.
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