Zinc Standard solution preparation
Zinc Standard Solution (5 mg/mL Zn):Dissolve 3.15 g of zinc oxide in 15 mL of hydrochloric acid and dilute to 500.0 mL with water.
Zinc Standard Solution (100 ppm Zn):
Immediately before use, dilute with water to 10 times its volume a solution containing zinc sulfate equivalent to 0.440 g of ZnSO4,7H2O and 1 mL of acetic acid in 100.0 mL.
Zinc Standard Solution (25 ppm Zn):
Dilute 25.0 mL of zinc standard solution (100 ppm Zn) to 100.0 mL with water immediately before use.
Zinc Standard Solution (10 ppm Zn):
Immediately before use, dilute zinc standard solution (100 ppm Zn) to 10 times its volume with water.
Zinc Standard Solution (5 ppm Zn):
Immediately before use, dilute zinc standard solution (100 ppm Zn) to 20 times its volume with water.
Zirconium Standard Solution (1 g/l Zr):
Dissolve zirconyl nitrate equivalent to 0.293 g of ZrO(NO3)2,2H2O in a mixture of 2 volumes of hydrochloric acid and 8 volumes of water and dilute to 100.0 mL with the same mixture of solvents.
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