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- W801569263 abstract "L-Cysteine is of great importance in biological and biomedical fields. Being an important amino acid in protein structures, cysteine participates in a number of biochemical processes which depend directly on the particular reactivity of thiols. Its oxidised derivatives have additional metabolic functions. Many methods for its determination have been reported including spectrophotometry1−4, fluorimetry5−7, electrophoresis , high performance liquid chromotography, and electrochemical methods10−15. Of these, voltammetric techniques offer high sensitivity and selectivity for cysteine determination. It is known that cystine (RSSR) is reduced at a dropping mercury electrode (DME) to produce cysteine (RSH). It was observed that if after the first scan the electrode was poised at 0 V for a short time prior to the second scan, a peak at more anodic potentials appeared. This peak was attributed to the reduction of mercurous cysteinate (RSHg). More sensitive techniques utilise the hanging mercury drop electrode (HMDE); the cathodic stripping voltammetric (CSV) determination of cysteine depends on the reduction of the mercury complex of the" @default.
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- W801569263 date "2003-04-01" @default.
- W801569263 modified "2023-09-27" @default.
- W801569263 title "Voltammetric and Flow Injection Amperometric Determination of Cysteine at a Glassy Carbon Electrode in the Presence of Copper(II) Ions" @default.
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- W801569263 hasPublicationYear "2003" @default.
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