3,5,7,4'-Tetrahydroxyflavone (kaempferol) as a chromogenic reagent for gallium and indium.
3,5,7,4'-Tetrahydroxyflavone (kaempferol) forms yellow chelates with indium and gallium. Based on this reaction, a sensitive spectrophotometric method for the determination of gallium and indium alone and in presence of other metals and alloys has been developed. Beer's law is obeyed up to 2.8 and 1.44 ppm for indium and gallium respectively.
Garg
B S
BS
Chemistry Department, University of Delhi, Delhi-7, India.
Singh
R P
RP