Preparation of selenium-enriched sprouts and identification of their selenium species by high-performance liquid chromatography-inductively coupled plasma mass spectrometry.

High-performance liquid chromatography of selenoamino acids and organo selenium compounds. Speciation by inductively coupled plasma mass spectrometry.

As part of an ongoing study to identify selenium compounds with cancer chemopreventive activity, extracts of selenium-enriched samples were analyzed by HPLC-inductively coupled plasma (ICP)-MS. Ion-exchange, ion pair and derivatization methods for reversed-phase HPLC were considered and advantages and disadvantages for each compared. Anion exchange allows separation of selenite and selenate, bu...

Simultaneous speciation of arsenic and selenium in human urine by high-performance liquid chromatography inductively coupled plasma mass spectrometry

Determination of Organic and Inorganic Selenium Species Using HPLC-ICP-MS Application

A methodology based on coupling isocratic high-performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP-MS) with optimized collision/reaction cell conditions has been developed for the simultaneous analysis of organic and inorganic selenium species in natural water samples. Selenium concentrations found in total and speciation analysis of a number of water ...

Selenium and its distribution in edible mussel Mytilus galloprovincialis collected from different locations

Mussels Mytilus galloprovincialis collected and bought from different locations (Slovenian coastline, Italy and NE Pacific) were analysed by techniques of hydride generation atomic fluorescence spectrometry (HG-AFS) and liquid chromatography coupled to inductively coupled plasma mass spectrometry (HPLC-ICP-MS) in order to assess selenium (Se), its distribution and Se species in raw and cooked s...

Speciation of selenium dietary supplements; formation of S-(methylseleno)cysteine and other selenium compounds.

Speciation of selenium is of interest because it is both essential and toxic to humans, depending on the species and the amount ingested. Following indications that selenium supplementation could reduce the incidence of some cancers, selenium-enriched yeast and other materials have been commercialized as supplements. Most dramatically however, the SELECT trial that utilized l-selenomethionine a...