User:Karlena L. Brown/Notebook/PVOH Research/2012/09/28: Difference between revisions
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* Using a spatula, scoop and place small amount of finely ground clay sample into sample holder compartment | * Using a spatula, scoop and place small amount of finely ground clay sample into sample holder compartment | ||
* Using a spatula, level off the clay surface in the compartment making an even smooth level plane | * Using a spatula, level off the clay surface in the compartment making an even smooth level plane | ||
* Wipe the outsides of the compartment of the low signal background sample holder with Kimwipe and acetone again | * Wipe the outsides of the compartment of the low signal background sample holder with Kimwipe and acetone again | ||
'''Instrument Programming and Operation''' | '''Instrument Programming and Operation''' | ||
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* Create name for sample run under new folder '''MKM''' → '''NaMT''' | * Create name for sample run under new folder '''MKM''' → '''NaMT''' | ||
* Finally save all information and let the sample run begin and continue for 30 minutes | * Finally save all information and let the sample run begin and continue for 30 minutes | ||
'''X-Ray Diffraction will be run on the following clays: 50% CEC NaMT, 100% CEC NaMT, and the α-Fe<sub>3</sub>O<sub>4</sub>''' | '''X-Ray Diffraction will be run on the following clays: 50% CEC NaMT, 100% CEC NaMT, and the α-Fe<sub>3</sub>O<sub>4</sub>''' | ||
'''NOTES''' | '''NOTES''' |
Revision as of 14:19, 22 October 2012
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OBJECTIVES
X-Ray Diffraction InstructionsSample Preparation
Na+ and Cu2+ Ion Calculations in 2000ppm SO42- Solutions
MW Na2SO4: 142.04 g/mol MW Na+: 22.99 g/mol Mass Na+: 0.00150 g Na2SO4 × (1 mol Na2SO4/142.04 g Na2SO4) × (2 mol Na+/1 mol Na2SO4) × (22.99 g Na+/1 mol Na+) = 4.856 × 10-4 g Na+ Actual concentration of Na+ in 2020 ppm SO4-2 solution: (4.856 × 10-4 g Na+)/0.5 L × 106 = 971 ppm
MW CuSO4·5H2O: 249.69 g/mol MW Cu+2: 63.55 g/mol 0.00252 g CuSO4·5H2O × (1 mol CuSO4·5H2O/249.68 g CuSO4·5H2O) × (1 mol Cu+2/1 mol CuSO4·5H2O) × (63.55 g Cu+2/1 mol CuSO4·5H2O) = 6.41 × 10-4 g Cu+2 Actual concentration of Cu+2 in 2020 ppm SO4-2 solution: (6.41 × 10-4 g Cu+2)/0.5 L × 106 = 1283 ppm Cu+2 Na+ and Cu2+ Ion Calculations in 20ppm SO42- SolutionsActual concentration of Na+ in 20 ppm SO4-2 solution: Actual concentration of Na+ in 2020 ppm SO4-2 solution: (4.856 × 10-4 g Na+)/0.5 L × 106 = 971 ppm (971 ppm)(0.00495 L) = (M2)(0.5 L) M2 = 9.61 ppm Na+ Actual concentration of Cu+2 in 20 ppm SO4-2 solution: Actual concentration of Cu+2 in 2020 ppm SO4-2 solution: (6.41 × 10-4 g Cu+2)/0.5 L × 106 = 1283 ppm Cu+2 (1283 ppm)(5.16 mL) = (M2)(0.5 L) M2 = 13.2 ppm Cu+2
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