• Prepare a solution lead (Pb) and cadmium (Cd) from aqueous solution at STD concentration 10 ppm 15 ppm and 5 ppm, respectively ammonia buffer solution preparation •
มอะ
SI pH 4.6 transmission.• Put the rice husk charcoal production from kamman and kamman commercial charcoal from the laboratory to the baking to stop moisture over a period of 2 hours at 110oC
• Weighing approximately 0.01 ± 0.100 kamman charcoal g weight. With a scale resolution of 3 positions include in vitro
• Add dissolved Pb concentration 10 ppm volume 5 ml in vitro within packed charcoal kamman, and close the cap on the periodic vibrations for a period of 90 minutes.
.• Apply filter with filter paper and 1 storage extension solution, for example, in the sample storage bottles with lids mitchit
• Follow the 3-6, but changing the concentration of the substance soluble PB ppm 5 ppm and 10 from the 15 ppm, respectively,
.• Follow the 3-7, but change the lead solution as aqueous solution, cadmium
.
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