Simultaneous determination of multicomponents by flow injection analysis: determination of copper and zinc in serum by using zincon as colouring reagent.
A flow injection system is described for the simultaneous determination of copper and zinc with a single detector. Two sample plugs are injected into the same carrier stream sequentially. One is for zinc determination and the other is for the sum of copper and zinc. For zinc determination, copper masking reagent is simultaneously injected into a parallel carrier stream and merged with the sample plug by using the merging zone technique. Zincon is used as the colour reagent for the spectrophotometric determination of copper and zinc. The results for the analysis of serum by the proposed method correspond well with those obtained by an AAS method. The rate of analysis is about 45 samples/hr.
Liu
R M
RM
Department of Chemistry, Liaocheng Teachers College, Liaocheng, Shandong, People's Republic of China.
Liu
D J
DJ
Sun
A L
AL