Stepwise injection spectrophotometric determination of cysteine in biologically active supplements and fodders
作者： Andrey V. Bulatov , Anastasiia V. Petrova , Andriy B. Vishnikin , Leonid N. Moskvin
DOI: 10.1016/J.MICROC.2013.04.020
关键词:
摘要: Abstract A stepwise injection analysis system was developed to monitor the concentration of l -cysteine in biologically active supplements (BAS) and fodders. It is based on rapid redox reaction with 18-molybdo-2-phospahte heteropoly anion (18-MPA) detection formed blue a spectrophotometry. The method has relatively wide optimal ranges pH 18-MPA − 5.0 7.3 0.4 2.0 mM, respectively. Under optimized operating conditions performance SWIA linear up 0.1 mM ( R 2 = 0.994) limit 0.003 mM sample frequency 20 h − 1 . employed determine BAS fodder. obtained data were good agreement those measured by HPLC method.
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