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___________can be used for field testing.
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Raman Spectrometer
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FT-IR
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AAS
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- What is laser ablation and how can it he used to sample solids for ICPMS?Peaks of scattered intensity are observed when the path difference would becomes equal to __________ λ/2 λ 2λ 3λ/2The scale of a spectrophotometer extends from 1 to 100% T, what are the values of these two extremes in absorbance? а. О, 2.0 b. 2.0, 0 с. 0, 1.99 d. 1.99, 0
- How do I do question #3 about correspondence between % transmittance and absorbance? Thank youWhat are the advantages of using the KBr in IR spectroscopic sample preparation? Please shortly write at your own words. (4-5 lines maximum ).3 How do I calculate the standard deviation of background (baseline) on the UV-Vis absorbance measurement?
- True or False. 1. The absorbance of a sample is equal to the negative logarithm of the transmittance. 2. Winkler method of dissolve oxygen determination is an example of iodometry. 3. A diazo compound is produced when nitrite is reacted with sulfanilamide in acidic solution. 4. Atomic Absorption Spectroscopy can be used to analyze the functional groups of organic substances. 5. A diode array spectrometer use an absorption or interference filters for wavelength selection and a photoelectric device for measuring radiant power. 6. The oxidation state for the manganese in the brown solid which precipitate in Winkler method is +3 7. In Winkler method, the iodine produced is oxidized during sodium thiosulfate titration to iodide ion. 8. When the pH of the solution is adjusted to pH greater than 12, the EDTA reacts with magnesium ions only, because calcium precipitates as calcium hydroxide.Which of the following is NOT a detector used with HPLC? evaporative light-scattering detector refractive index detector ultraviolet detector electrochemical detector thermal conductivity detectorWhat percent transmittance range and what absorbance range are considered to be the optimum working ranges for spectrochemical measurements?
- Spectroscopic Analysis https://www.youtube.com/watch?v=ZfMPyZiDsf4&list=PLE-217H0ao60Uzpzj-FNP_0ScVp5SZB7j&index=2 watch the following question and read the article to answer the questions Spectroscopic Analysis-1 a.Which of the following statements regarding IR spectroscopy is wrong? Infrared radiation is higher in energy than UV radiation. Infrared spectra record the transmission of IR radiation. Molecular vibrations are due to periodic motions of atoms in molecules, and include bond stretching, torsional changes, and bond angle changes. Infrared spectra give information about bonding features and functional groups in molecules. b.Which is the correct order of decreasing wave number of the stretching vibrations of (1) C-H (alkane), (2) C-H (alkene), (3) C-H (alkyne), and (4) C=O? (1) > (2) >(3) >(4) (4) < (3) < (2) < (1) (3) < (4) ≈ (2) < (1) (1) < (4)…Please complete Table 2 and show the calculations for protein concentration and the concentration of the undiluted sample. a). Using Excel software, enter data from Table 1 to plot a standard curve (corrected average absorbance on Y-axis and protein concentrations on X-axis). The standard curve must contain correct labels on both axes. b). From the standard curve, obtain a best fit line and equation. c). Use the best fit equation and data from Table 2 to find the concentrations of proteins in sample A2-D2 and E1. [onto your plotted standard curve, indicate where A595 of A2-D2 and E1 are located] d). Calculate the concentrations of proteins in undiluted samples A to E. Thank you very much.6 why it makes sense to use an internal standard in IR spectrometry when its not used in Uv-Vis
