User:Karlena L. Brown/Notebook/PVOH Research/2012/10/05: Difference between revisions
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* Dilution standards listed above for CuSO<sub>4</sub> are incorrect and inaccurate due to miscalculations of stock solution concentrations | * Dilution standards listed above for CuSO<sub>4</sub> are incorrect and inaccurate due to miscalculations of stock solution concentrations | ||
'''CuSO<sub>4</sub> stock solution = | '''CuSO<sub>4</sub> stock solution = 1283 ppm''' | ||
*New original standards prepared were increasingly high in concentration; therefore, CuSO<sub>4</sub> standards, 5-20ppm, must remade | *New original standards prepared were increasingly high in concentration; therefore, CuSO<sub>4</sub> standards, 5-20ppm, must remade |
Revision as of 20:01, 22 October 2012
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OBJECTIVES
Preparations For CuSO4 Clay Exchanged Solutions & Vacuum Filtration ProceduresSetup of a vacuum filtration system: * Clean 250mL Erlenmeyer Filter Flask * Large Buchner Funnel * Whatman #42 Filter Paper * Long Secure Rubber Hose
REPEAT THE PROCEDURE ABOVE FOR THE 100% CEC NaMT & THE 50% CEC NaMT CLAYS AS WELL Atomic Absorption CuSO4 Clay Exchanged Dilutions & CalculationsCuSO4 Dilution Standards 12mL 7.4 ppm CuSO4 requires: (636ppm CuSO4)V1 = (7.4ppm CuSO4)(12mL) V1 = 0.140mL 12mL 10 ppm CuSO4 requires: (636ppm CuSO4)V1 = (10ppm CuSO4)(12mL) V1 = 0.189mL Atomic Absorption ResultsAtomic Absorption Data and Calibration Curve Data from AA wizard:
Notes
CuSO4 stock solution = 1283 ppm
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