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- As a forensic toxicologist, you have been given a task on determining amount of cadmium, mercury, chromium, copper and lead metal contents in medicinal herbs using flame atomic absorption spectroscopy (AAS). Hollow cathode lamp (HCL) was selected as radiation source for this analysis. The highest concentration came from lead element followed by chromium and copper, however cadmium and mercury were not detected in the sample. a) Based on your knowledge, conclude whether the above result is valid or not. b) If you are given an option of electrothermal or flame atomizer for above case study, determine which one is suitable and justify your answer.Name of Experiment: Fluorescence Spectroscopy Q1: Purpose of experiment Q2: Introductionwhich of the following statements is incorrect? A. a conventional mass spectrometer does not use a spectrophotometric detectorB. a conventional mass spectrometer does not always require high purity samplesC. a mass spectrum shows no signals due to uncharged speciesD. a conventional mass spectrometer uses high energy UV radiation
- 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 meFlame 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.Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Title: Determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample. Question: Discuss the safety and precautions during the experiment.
- Exp. No. 4 5 6 Data and Results A REPORT FORM Plop, Plop, Fizz, Fizz, Limiting Reagent and Determination of NaHCO3 in Alka Seltzer Tablets Mass of Volume of Volume of beaker and liquid Water Acetic acid Mass of Alka Seltzer tablet 15 m² 20 m² 158. 030g 3.240g me 20ML 25 10ML 157.401g 3.244g FEL Total mass of beaker and contents before reaction Total mass of beaker and contents after reaction Mass of CO2 (loss of mass) 161.2769 160.345g 10.931g 15 m 145.477g 3.2289 168.7059 167.850g 0.855 160.653g 159.6719 0.982 Stoichiometry nead bal. equation B Mass of % of NaHCO3 in. NaHCO3 in tablet* tablet 10/24Given C6H12O2 chemical formula. chemical shift , intergration, multiplicity and interpretation needed.Define mass spectroscopy and the underlying principle/background of its method for characterizing samples.
- QUALITATIVE DETECTION OF ORGANIC COMPOUNDS Would you say that all organic compounds give evidence of containing carbon when they are burned or heated?Which 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. Title: Determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample. Question: Discuss.