AAS lab - Experiment 9 Determination Iron and Copper in...

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Experiment 9 Determination Iron and Copper in Vitamin Tablets by Flame  Atomic Absorption Spectrophotometry Chem 265 1C (Tuesday) Lab Completed: April 1, 2008 Lab Submitted: April 15, 2008 Team Members: Andrew Dixon Jennifer V. Nguyen Mathew T. Smith
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Purpose:   To analyze copper and iron ion from a vitamin tablet using Atomic Absorption  Spectrophotometry, a calibration plot and the standard addition method for copper. Procedure: A vitamin tablet was digested in 25 mL of 8 M HCl into a 150 mL beaker over  heat for 10 minutes, after which it was removed from the heat. 1 mL of conc. HNO was  added and it was heated again for 10 minutes.  The sample was allowed to cool before  being vacuum filtered into a 250 mL volumetric flask quantitatively, diluted to the mark  and mixed.  The sample solution was then diluted into three 50.00 mL vol. flasks with the  following volumes of sample solution: 5.00 mL, 500 µL, and 100 µL.  15 drops of 6 M  HNO 3  were added to each flask. Six standard metals solutions were made from the 100 ppm stock standard and 6  drops of 6 M HNO 3 , diluted with distilled water in six 50.00 mL vol. flasks with the  following volumes of standard: 50 µL, 125 µL, 250 µL, 500 µL, 1500 µL, and 2500 µL. The absorbance of Copper and Iron were obtained individually by first aspirating 
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This lab report was uploaded on 04/19/2008 for the course CHEM 265 taught by Professor Mbindyo during the Spring '08 term at Millersville.

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AAS lab - Experiment 9 Determination Iron and Copper in...

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