KINETIC-SPECTROPHOTOMETRIC DETERMINATION OF THIOCYANATE BASED ON ITS INHIBITORY EFFECT ON THE OXIDATION OF PYROGALLOL RED BY BROMATE

被引:0
|
作者
ENSAFI, AA [1 ]
TAJEBAKHSHEARDAKANY, J [1 ]
机构
[1] ISFAHAN UNIV TECHNOL,COLL CHEM,ESFAHAN,IRAN
关键词
KINETIC; THIOCYANATE; PYROGALLOL RED; BROMATE; OXIDATION; INHIBITORY EFFECT;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A kinetic spectrophotometric method for rapid measurement of thiocyanate in serum, urine and sewage,wafer with no need 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 mu g/mL with a limit of detection of 0.001 mu g/mL. The relative standard deviation for ten replicate determination of 0.025 mu g/mL of thiocyanate is 1.5%.
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页码:97 / 103
页数:7
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