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A HPLC-ICP-MS method for the analysis of selenocystine (SeCys2), selenite [Se(IV)], selenomethionine (SeMet) and selenate [Se(VI)] was developed. In the experiment, chromatographic separation was performed within 8 min with 8 mM citric acid solution (pH 5) as mobile phase. The potentially interference of 40Ar40Ar+ to 80Se+ at the selenium masses of m/z 80 was reduced by CH4 as a reactive cell gas...
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