Flow injection chemiluminescent method for the successive determination of l-cysteine and l-cystine using photogenerated tris(2,2'-bipyridyl) ruthenium (III).

@article{PrezRuiz2002FlowIC,
  title={Flow injection chemiluminescent method for the successive determination of l-cysteine and l-cystine using photogenerated tris(2,2'-bipyridyl) ruthenium (III).},
  author={Tom{\'a}s P{\'e}rez-Ruiz and Carmen Mart{\'i}nez-Lozano and Virginia Tom{\'a}s and Jesus Pena Martin},
  journal={Talanta},
  year={2002},
  volume={58 5},
  pages={987-94}
}
Flow injection configurations were developed for the individual determination of l-cysteine and l-cystine and for the mixture of both analytes. The method is based on the reaction of l-cysteine with tris(2,2'-bipyridyl) ruthenium (II) and peroxydisulphate under UV irradiation to produce chemiluminescence. Cystine is determined after reduction to cysteine in a copper-coated cadmium reductor mini-column in the flow system. The inclusion of a selection valve in the configuration allows the… CONTINUE READING