Gravimetric determination of nickel with salicylaldehyde thiosemicarbazone.
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概要
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A study of the use of salicylaldehyde thiosemicarbazone (STSC) in the gravimetric determination of nickel is reported. STSC reacts with Ni(II) in aqueous medium in the pH range 6.5–8.2 to form reddish brown water insoluble complex. The complex can be conveniently filtered at the pump using a G<SUB>4</SUB> sintered glass crucible and dried at 100–120 °C and weighed as Ni(C<SUB>8</SUB>H<SUB>8</SUB>N<SUB>3</SUB>OS)<SUB>2</SUB>. Interference of foreign ions were examined. The influence of concentration, temperature, and pH on the precipitation were studied. The reagent tested in this work was compared with classical 1,2-dioximes used in the gravimetric determination of nickel. This method was applied to determine nickel in stainless steel.
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著者
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Parameswaran Geetha
Department of Chemistry, University of Calicut
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Laly S.
Department of Chemistry, University of Calicut