Illustrate the basic parts of the following: a. AAS b. FAES c. HGAAS d. ICP-MS e. Florescence Atomic Absorption Spectrometer f. DCP Emission g. MPAES
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Illustrate the basic parts of the following:
a. AAS
b. FAES
c. HGAAS
d. ICP-MS
e. Florescence Atomic Absorption Spectrometer
f. DCP Emission
g. MPAES
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- i) Find the differences between the AES and XPS in terms of principle and information obtained from the spectra. ii) Why AFM is mostly utilized microscopic method for the determination of the thickness of the film?Atomic Spectroscopy (a) In terms of spectral shape, how are atomic spectra different from molecular spectra? What is the source of this difference? (b) Describe the decision-making process for picking a line for atomic emission analysis of a given analyte. (c) For quality assurance, spike recovery is not sufficient to establish confidence in an analytical procedure. Explain this statement. What should be done instead to demonstrate satisfactory performance of an instrumental method (including elemental analysis). (d) Find a literature example of atomic spectroscopy used for elemental analysis. State the operating conditions with sufficient detail to reproduce the analysis; Please answer very soon will give rating surely All questions complete Answer needed Please help meWhy high-resolution monochromator is needed for atomic emission spectroscopy while atomic absorption spectroscopy requires a monochromator having only low-to-moderate resolving power?
- Find information on fluorescent dye Fluo-3: Display its structure Briefly describe its purpose and the mechanism of operation Display its fluorescence spectra Display transmission spectra of commercially available optical filters required for flow cytometry measurements of cells stained with Fluo-3 (see lecture notes on where to look)5. What is the working principle of raman spectroscopy.?6. Compare atomic spectroscopy with moleculer spectroscopy. Show also the electronic transitions and spectra of both methods.?7. What are the names of the elements that we can not analyse with AAS but we can use ICP-OES for quantitative analysis.?About Atomic spectroscopy a) Explain the fundamental difference between the two main types of atomic spectroscopy: atomic emission and atomic absorption. Also explain the main difference in instrumentation between these techniques. Draw a sketch as support. b) Explain the advantages of using emission measurements in an inductive coupled plasma (ICP) instead of flame emission measurements. Motivate! c) Measurement of mercury (for example in Värmland Lakes) can be performed with flameless atomic absorption spectroscopy. Measurement with this technique gives a detection limit of about 0.01 ppb to compare with the determination of mercury in a flame that has a significantly lower detection limit, about 200 ppb. Explain why the flameless technology is so much more sensitive for measuring mercury. Please answer very soon will give rating surely All questions answers needed
- Explain IR spectroscopy as a characterization technique.Provide an explanation of the effects which are responsible for the three absorbances profile in relation to the height of the burner. Figure below shows the absorbance profile of the three elements.Based on the picture i) Calculate the limit of detection (LOD) and limit of quantitation (LOQ) for As. ii) Determine the dynamic range of the method. iii) A sample of water yielded an absorbance of 0.36. What is the concentration of As in the water?
- Explain why an internal standard is required during sample preparation in quantitative analysis when using atomic spectroscopy?Instrumentation of IR spectroscopy? Please answer at your own words.6. A sample of an alum was analysed by atomic spectroscopy and gravimetrically to determine its structure. A 0.1000 g of the sample when treated with BaCl₂ produced 0.0984 g of a white solid after drying to constant weight. Another 0.1000 g sample of the alum when heated at 105°C for several hours produced a weight loss of 0.04558 g while the % of K in the sample was determined by atomic spectroscopy to be 8.240%. Use these results to work out a formula for the alum. [M,/ g mole¹: K 39.10; Al 26.98; BaSO, 233.39; SO² 96.06; H₂O 18.0148]
