Title of article :
Spectrofluorimetic determination of cysteine based on the fluorescence inhibition of Cd(II)–8-hydroxyquinoline-5-sulphonic acid complex by cysteine
Author/Authors :
Wang، نويسنده , , Hong and Wang، نويسنده , , Weisheng and Zhang، نويسنده , , Hua-Shan، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2001
Abstract :
A spectrofluorimetric method for the determination of cysteine at trace and ultra trace levels (0–1.82×10−5 mol l−1) has been developed. It is based on the efficient inhibition action of cysteine on the fluorescent system of Cd(II)–8-hydroxyquinoline-5-sulphonic acid complex (Cd(II)–HQS) (λex 364.8 nm, λem 510.4 nm) solution at pH 8.5. The method has been applied to protein hydrolysate and cystine electrolyte samples.
Keywords :
Cysteine , Spectrofluorimetry , Cd(II)–8-hydroxyquinoline-5-sulphonic acid complex (Cd(II)–HQS)