REAGENTS:
Nitric acid, conc.*
2. Nitric acid, 10% (v/v). Add 100 mL conc.
HNO3
to 500 mL water; dilute to 1 L.
3. Hydrogen peroxide, 30% H2O2
(w/w),
reagent grade.*
4. Calibration stock solution, 1000 µg/mL Pb.
Commercial standard or dissolve 1.00 g Pb
metal in minimum volume of (1+1) HCl and
dilute to 1 L with 1% (v/v) HCl. Store in a
polyethylene bottle. Stable one year.
5. Air, compressed, filtered.
6. Acetylene
7. Distilled or deionized water.
REAGENTS:Nitric acid, conc.*2. Nitric acid, 10% (v/v). Add 100 mL conc.HNO3 to 500 mL water; dilute to 1 L.3. Hydrogen peroxide, 30% H2O2 (w/w),reagent grade.*4. Calibration stock solution, 1000 µg/mL Pb.Commercial standard or dissolve 1.00 g Pbmetal in minimum volume of (1+1) HCl anddilute to 1 L with 1% (v/v) HCl. Store in apolyethylene bottle. Stable one year.5. Air, compressed, filtered.6. Acetylene7. Distilled or deionized water.
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