Gravimetric determination of nickel with thiosemicarbazones

Abstract

A systematic study of the use of thiosemicarbazones in the gravimetric determination of nickel is reported. The compounds tested were furfural thiosemicarbazone (FAT), thiophen-2-aldehyde thiosemicarbazone (TAT) and furfural 4-phenyl-3-thiosemicarbazone (FAPT). FAPT is the most appropriate reagent owing to its sensitivity and selectivity. FAPT has been applied to the gravimetric determination of nickel in diverse standard samples. The reagents tested in this work were compared with classical vic-dioximes used in the gravimetric determination of nickel.