Title of Article :
Flow injection spectrophotometric determination of ultra trace amounts of selenium (IV)
Title Of Periodical :
INDIAN JOURNAL OF CHEMISTRY
Descriptors :
FIA,Selenium,Catalytic,Spectrophotometry
Abstract :
A flow injection specteophotometric method has been described for determination of selenium (IV).The method is based on the catalytic effect of Se(IV) on the reduction of gallocyanine by sulphide. The decrease in absorbance of gallocyanine at 620 nm is proportional to the Se(IV) concentration in the range 2.5500 ng/ml with a limit of detection of 1.0 ng/ml.The relative standard deviation for ten replicate measurements of 50 ng/ml of Se(IV) is 1.5,. Interference dueto variousions has been studied.
