Concept explainers
(a)
Interpretation:
Reciprocal linear dispersion of a monochromator for first− order spectra is to be determined.
Concept introduction:
Reciprocal linear dispersion gives the relationship between the focal length of the monochromator, the order of monochromator and the distance (d) between slits. An instrument which can resolve every spectra detail, this ability of an instrument is called as linear dispersion and reciprocal of linear dispersion is called reciprocal linear dispersion. The mathematical expression of this relationship can be given as-
Where,
D-1 = reciprocal linear dispersion
1/d = blazes per millimeter
n= number of the order of monochromator
f= focal length of the monochromator
(b)
Interpretation:
The first order resolving power of given monochromator is to be determined.
Concept introduction:
Resolving power of monochromator can be calculated by using the following formula:
Where,
Δλ = small separation of given wavelength.
λ= wavelength.
And the number of lines for monochromator is calculated by the following condition:
(c)
Interpretation:
The minimum wavelength difference for the theory to be completely resolved by the instrument at 400 nm (approximately) should be determined.
Concept introduction:
Resolving power of the instrument will be used. The formula of resolving power is given as:
Trending nowThis is a popular solution!
Chapter 7 Solutions
Principles of Instrumental Analysis
- Use the data in Figure 4.8 to estimate the ratio of radiation intensity at 10,000 Å (infrared) to that at 5000 Å (visible) from a blackbody at 5000 K. How will this ratio change with increasing temperature? Explain how this change occurs.arrow_forwardExplain the difference of an operational principle between flame atomic absorption spectroscopy (FAAS) and flame atomic emission spectroscopy (AES). Predict the type of interference caused by the formation of metal ion-anion compounds which are difficult to be dissociated in flame.arrow_forwardin 1963 javan and townee attained a short term frequency stability of roughly S parts per 10 with a He-Ne gas laser at lamda=1153 nm. compute the coherence time and coherence lengtharrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningPhysical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,