Kinetic-spectrophotometric determination of thiocyanate based on its inhibitory effect on the oxidation of pyrogallol red by bromate

RecordNumber :

110

Doc. No. :

246A

Call. No. :

246A

Author :

Ensafi, ali asghar

Title of Article :

Kinetic-spectrophotometric determination of thiocyanate based on its inhibitory effect on the oxidation of pyrogallol red by bromate

Title Of Periodical :

IRAN J. CHEM.

VolumNumber :

V.13 No.2

Date :

(1994)

Page :

P.97-102

Descriptors :

Kinetic,Thiocyanate,Pyrogallol red,Bromate,Oxidation,Inhibitory effect

Abstract :

kinetic spectrophotometric method for rapid measurement of thiocyanate in serum, urine and sewage water with no nssd for removed of interfering substances is described. The method is based on the inhibitory effect of thiocyanate on the oxidation of pyrogallol red by bromate and nitrite which is monitored at 467nm. The variables affecting the rate of the reaction were investigated and the optimum conditions were established. Thiocyanate can be measured in the range of 0.010-0.500 Mg/mL with a limit of detection of 0.001 Mg/mL. The relative standarddeviation for ten replicate determination of 0.025Mg/mL of thiocyanate is 1.5,.

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