Lead Compound

Temperature

pH

Alkalinity level

Temperature and pH Experiments

Hydrocerussite

20˚C and 5˚C

7.0, 8.0, 9.5

Moderate

Cerussite

20˚C and 5˚C

7.0, 8.0, 9.5

Moderate

Alkalinity Experiments

Hydrocerussite

20˚C and 5˚C

8.0

Moderate or Low

Cerussite

20˚C and 5˚C

8.0

Moderate or Low

Sampling time for solutions with moderate alkalinity (NaHCO3): 30 min, 1 hr, 10 hr, 1 day, 3 day, 5 day, 10 day, 15 day, 20 day, 30 day and 45 day. Sampling time for solutions with low alkalinity (CaCO3): 1 day, 5 day, 15 day, 20 day, 30 day and 45 day.