(a)
Interpretation:
The difference between concentration-sensitive and mass-sensitive detector is to be stated and whether the thermal conductivity detector is mass or concentration sensitive.
Concept introduction:
Thermal conductivity can be defined as the ability of a material to conduct heat.
(b)
Interpretation:
Whether the atomic emission detector is mass or concentration sensitive.
.
Concept introduction:
Atomic emission occurs when an atom emits some specific wavelengths.
(c)
Interpretation:
Whether the thermionic detector is mass or concentration sensitive.
Concept introduction:
Thermionic emissions occur when electrons are excited from a heated source.
(d)
Interpretation:
Whether the electron captive detector is mass or concentration sensitive.
Concept introduction:
The electron capture is the process of making unstable atoms more stable.
(e)
Interpretation:
Whether the flame photometric detector is mass or concentration sensitive.
Concept introduction:
Flame photometry is utilized for inorganic chemical analysis. It can detect the concentration of some metals like lithium, sodium, calcium and more.
(f)
Interpretation:
Whether the flame ionization detector is mass or concentration sensitive.
Concept introduction:
Flame ionization detection is a device used to measure the analyte in a gas flow.
Trending nowThis is a popular solution!
Chapter 27 Solutions
INSTRUMENTAL ANALYSIS-ACCESS >CUSTOM<
- 6 why it makes sense to use an internal standard in IR spectrometry when its not used in Uv-Visarrow_forwardAssuming an integrated luminosity of 100 fb is collected at the ATLAS detector at the LHC, calculate the number of h ZZ events where both Z bosons decay to either a ete pair or a u u palr. You may assume that the total Higgs (h) production cross section is o, = 2 x 10' fb, the branching fraction for a Z boson decay to a ee pair is 3.36%, the branching fraction for a Z boson decay to a "u pair is 3.36%, and the branching fraction for a Higgs boson to decay to a pair of Z bosons is 2.7%. Enter your answer in the box below rounded to the nearest integer (e.g. 1234.4 should be entered as 1234). Ancwerarrow_forwardwhich 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 radiationarrow_forward
- When opening the cover of an analytical detector, which optical elements can help us to differentiate whether the instrument is a spectrofluorometer or a UV-Vis spectrophotometer. Justify your answer:arrow_forwardAtomic 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 mearrow_forwardI need the answer as soon as possiblearrow_forward
- What is the relationship between the excitation wavelength (λex) and emission wavelength (λem) in atomic spectrophotometry (e.g. flame or furnace atomic absorption spectrophotometry)? Why is this different from molecular spectrophotometry?arrow_forwardInduction coupled plasma (ICP) emission spectrometry is widely used for the sensitive multi-element determinations. How does the ICP work?arrow_forwardFluorometry is more selective and more sensitive than absorption spectrometry.Tell what is meant by selectivity and sensitivity.arrow_forward
- 5. A solution prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) containing 8.24 µg S/mL, and diluting to 50.0 mL. The measured signal quotient was (signal due to X/signal due to S) = 1.90/1.000. a. In a separate experiment it was found that, for equal concentrations of X and S, the signal quotient was (signal due to X/signal due to S) = 0.930/1.000. Find the concentration of X in the unknown. b. Answer the same question if in a separate experiment it was found that for the concentration of X equal to 3.42 times the concentration of S, the signal quotient was (signal due to X/signal due to S) = 0.930/1.000.arrow_forwardWhich of the following statement is incorrect? The quality of grating of the monochromator affects the resolution of two closely spaced wavelengths in a spectrum. OICP (Inductively coupled plasma) is commonly used in atomic emission spectrometry. Cuvette is generally used for atomic absorption spectrometry (AAS) as the sample cell. The measurement in fluorescence spectrometry is generally more sensitive than absorption spectrometry.arrow_forwardI need the answer as soon as possiblearrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning