Exp. 8 - Course: Chem 221 Name: Ashay Mehta Experiment #8...

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Course: Chem 221 Name: Ashay Mehta Experiment #8 – Determination of Sodium in an Unknown Solution and in Snacks by Flame Atomic Absorption Spectrometry (AAS) Unknown Number: #2 Due Date: 12/04/09 Date Report Submitted: 12/04/09 Grade: Accuracy Presentation Total
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Determination of Sodium in an Unknown Solution and in Snacks by Flame Atomic Absorption Spectrometry (AAS) Ashay Mehta November 30 th , 2009 Objective: To understand the fundamentals of spectroscopy by learning how to use it and to successfully determine the amount of sodium in an unknown by using the flame atomic absorption spectrometry. Also to learn to extract metals from complex samples. Theory: The flame AAS is used due to its simplicity. A liquid sample is aspirated into a flame and atomized. A light beam is directed through the flame into a monochromator and a detector which measures the amount of light absorbed by the atomized element, in this case sodium, in the flame. Beer’s Law is followed because it is a diluted solution. The absorbance is proportional to the concentration of the element in the sample. In the
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Exp. 8 - Course: Chem 221 Name: Ashay Mehta Experiment #8...

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