Simultaneous determination of copper and zinc in the hair of children by pH gradient construction in a flow-injection system.
A flow-injection method is described for the simultaneous determination of copper and zinc with a single detector using the pH gradient technique. Zincon is used as the colour reagent for the spectrophotometric determination. The linear range for the determination of zinc is 0.4-12 micrograms ml-1 and for copper is 0.1-3.0 micrograms ml-1. About 20-30 samples can be determined in one hour. The proposed method has been applied to the determination of zinc and copper in childrens' hair.
Liu
R
R
Department of Chemistry, Liaocheng Teachers College, Shandong, Peoples' Republic of China.
Liu
D
D
Sun
A
A
Liu
G
G
D002648:Child; D003300:Copper / Q000032:analysis*; D017022:Flow Injection Analysis; D006197:Hair / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D015032:Zinc / Q000032:analysis*
D003300:Copper; D015032:Zinc