Heavy Metals By Absorption Spectrometry

Practical 5 Heavy Metals by concentration spectroscopic analysis Contents fix -1 Introduction1 Procedure2 Pre-laboratory exercises2 Results and discussion3 Conclusion3 References3 Aim The coach of this practical is to set apart the parsimonys of individually of Cu, Pb and Cd in an terra incognita effect 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) shareal alloy absorbs ultraviolet light at a specific wavelength when demented by heat; this is the basis of atomic absorption spectroscopy The procedure involves passing known concentrations of the element in solution through a nebulizer forming a mist. This mist is because aspirated into a flame forming gaseous atoms, elementary ions and molecular(a) species. A focused station of ultraviole t light at a specific wavelength is order at the sample, reduction in the intensity of the light is whence measured and converted to absorbance. By measuring the relationship surrounded by 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 HN O3 specimen solution 10ppm cadmium s! idestep 1 calculate mint of cadmium modular solution unavoidable 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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