The Physics Of Atomic Absorption Spectrometry

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Using a standard curve the concentrations of two unknown samples were calculated. The standard curves were created using the calculated concentrations of the standards and the mean absorbance obtained using Atomic Absorption Spectrometry. One of the unknown samples had a concentration outside of the standard curve and had to be diluted before it fell within the curve. . Table of Contents Abstract 1 Introduction 3 Instrumental Theory and Equipment 3 Materials and Methods 5 Data and Experimental Results 6 Conclusion and Discussion of Uncertainty 8 Assigned Questions 9 References 11 Appendix 12 SprectrAA report 1 12 SpectrAA report 2 12 Introduction Atomic absorption spectrometry is commonly used in analysis of solutions for metals. Allan Walsh is considered to be the father of atomic absorption spectrometry (Weltz, Sperling & Resano 2008). The atomic absorption spectrometer was first publicly demonstrated in 1954 (Weltz, Sperling & Resano 2008). Although some labs were using Walsh’s technique for atomic absorption it was not until about 1962 that the instrument was manufactured (Weltz, Sperling & Resano 2008). The company to make the first atomic absorption spectrometer was Perkin-Elmer (Weltz, Sperling & Resano 2008). The method of external standards was used in this experiment to create a calibration curve, which was then used to help determine the concentrations of two unknown samples. Instrumental Theory and Equipment Before running the sample, the instrument had to
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