Measurement Significance: Zinc is one of the necessary trace elements, and plays an important role in insulin and porphyrin metabolism.

As determiner: in solution of pH 8.5 to 9.5, Zn2 + and zinc reagent generate a blue coordination compound in 620 nm, with a maximum absorption peak.

Required instruments, supplies: centrifuge, adjustable pipette, visible spectrophotometer / enzyme label, trace quantine-based cuvette / 96-well plate, distilled water and anhydrous ethanol.

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