Heavy Metals By Absorption Spectrometry

Practical 5 Heavy Metals by submersion spectrographic analysis Contents fix -1 Introduction1 Procedure2 Pre-laboratory exercises2 Results and discussion3 Conclusion3 References3 Aim The coach of this practical is to condition the parsimonys of distributively of Cu, Pb and Cd in an enigmatical result with the use of nuclear Absorption Spectrometry. Introduction Atomic Absorption Spectrometry or AAS is a spectrophotometric analysis proficiency that allows for twain quantitative and qualitative determination of most divisions. all(prenominal) segmental alloy absorbs ultraviolet light at a specific wavelength when aflame by heat; this is the basis of atomic absorption spectrometry The procedure involves passing known concentrations of the element in solvent through a nebulizer forming a mist. This mist is so aspirated into a flame forming gaseous atoms, elementary ions and molecular(a) species. A focused radiation of ultraviolet light at a specific wavelength is tell at the sample, reduction in the intensity of the light is thus measured and converted to absorbance. By measuring the relationship in the midst of concentration and absorbance of known concentration solutions, beer-lamberts law can then be utilized to determine the concentration of the particular element present in both unknown solution.

Figure 1 Simplified block diagram of Atomic Absorption spectrometer Pre-laboratory exercises Dilution calculations Unknown solution dilution factor of ten. (for Cd analysis only) 10ml unknown solution 90ml 0.5M HNO3 h ackneyed solution 10ppm cadmium sidestep! 1 calculate script of cadmium pattern solution ask in 100ml samples of each of 0.8, 0.6, 0.4, 0.2ppm cadmium solutions. Concentration (ppm)| muckle of standard solution (ml) | 0.8| 8| 0.6| 6| 0.4| 4| 0.2| 2| Standard solution 100ppm Lead Table 2 Calculated volume of lead standard solution required in 100ml samples of each of 0.8, 0.6, 0.4, 0.2ppm...If you want to get a full essay, magnitude it on our website: OrderCustomPaper.com

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