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In atomic spectroscopy, analytes are atomized in a flame. Write notes on:
(i) Flames, (ii) Furnaces and (iii) Plasma
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- What is the purpose of cobalt blue glass in spectroscopy?Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Discuss how can we determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.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 me
- (a) Describe step-by-step procedure how you would use atomic absorption to measure copper in urine?5 What is the atomic number of a neutral atom that has 8 neutrons and 7 electrons? a. 15b. 8c. 7d. 1 6 Methods that employ separation of the product chemically through precipitation, with purification, drying and weighing of the resultant product: A. Spectrophotometric analysisB. Volumetric analysisC. Gravimetric analysisD. Gasometric analysis7 Phase changes involving fusion, except:a. Solid to liquidb. Liquid to solidc. Gas to liquidd. Gas to solidWith the aid of a clearly labeled diagram, briefly, but informatively, describe a hollow cathode lamp (HCL) commonly used in atomic adsorption spectroscopy (AAS).
- Explain why an internal standard is required during sample preparation in quantitative analysis when using atomic spectroscopy?What is analogue in medicinal chemistry?Define brieflyWhich statement accurately contrasts flame atomization and graphite furnace atomization in Atomic Absorption Spectroscopy (AAS)? Flame atomization requires smaller sample volumes compared to graphite furnace atomization, which is more suitable for bulk analysis. Graphite furnace atomization achieves higher temperatures than flame atomization, often resulting in better sensitivity and lower detection limits. Flame atomization is typically used for solids and high-viscosity liquids, whereas graphite furnace atomization is preferred for volatile liquid samples. Graphite furnace atomization is a less precise method than flame atomization due to the inhomogeneity of the sample matrix within the furnace.
- Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Provide appropriate discussion to determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.Briefly, but informatively, explain the following as encountered in analytical chemistry: (i) Photoelectric effect (ii) K−absorption edge (iii) Dead time of a detectorDescribe the application of AAS (Atomic Absorption Spectrophotometry) analytical methods for gold, copper and iron ore deposit evaluation which involve surface and subsurface geochemical sampling in a tropical environment.