Preparation of Lead Standard Solution
Lead Standard Solution (0.1% Pb):
Dissolve lead nitrate equivalent to 0.400 g of Pb(NO3)2 in water and dilute to 250.0 mL with the same solvent.
Lead Standard Solution(0.1% Pb) R1:
Dissolve in dilute lead-free nitric acid a quantity of lead nitrate equivalent to 0.400 g of Pb (NO3)2 and dilute to 250.0 mL with the same solvent.
Lead Standard Solution (100 ppm Pb):
Immediately before use, dilute lead standard solution (0.1 % Pb) to 10 times its volume with water.
Lead Standard Solution (20 ppm Pb):
Dissolve 0.80 g of lead(II) nitrate in water containing 2 mL of nitric acid and add sufficient water to produce 250 mL. Dilute 1 volume to 100 volumes with water immediately before use.
Lead Standard Solution (10 ppm Pb) R:
Immediately before use, dilute lead standard solution (100 ppm Pb) to 10 times its volume with water.
Lead Standard Solution (10 ppm Pb) R1:
Immediately before use, dilute with water to 10 times its volume a solution containing 0.160 g of lead nitrate in 100 mL of water, to which is added 1 mL of lead-free nitric acid and dilute to 1000.0 mL.
Lead Standard Solution (10 ppm Pb) R2:
Dilute lead standard solution (0.1 per cent Pb) R1 to 100 times its volume with dilute lead-free nitric acid. Use within 1 week.
Lead standard solution (2 ppm Pb):
Immediately before use, dilute lead standard solution (10 ppm Pb) R to 5 times its volume with water.
Lead Standard Solution (1 ppm Pb):
Immediately before use, dilute lead standard solution (10 ppm Pb) R to 10 times its volume with water.
Lead Standard Solution (0.5 ppm Pb):
Dilute lead standard solution (10 ppm Pb) R2 to 20 times its volume with dilute lead-free nitric acid. Use within 1 day.
Lead Standard Solution (0.25 ppm Pb):
Immediately before use, dilute lead standard solution (1 ppm Pb) to 4 times its volume with water.
Lead Standard Solution (0.1 ppm Pb):
Immediately before use, dilute lead standard solution (1 ppm Pb) to 10 times its volume with water.
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