Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 21, Problem 21.8QAP
Interpretation Introduction
Interpretation:
The instrumental difference between static SIMS and dynamic SIMS, the difference between information obtained from static SIMS and information obtained from dynamic SIMS, the imaging SIMS and types of information obtained with imaging SIMS should be determined.
Concept introduction:
Secondary ion mass spectroscopy (SIMS) is used to maintain the integrity of the surface by using static or dynamic condition in the time scale duration of the experiment.
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Match the wavelength range of electromagnetic radiation to the type of
spectroscopy.
>
4000-600 cm-1
10 - 380 nm
380-780 nm
1. IR Spectroscopy
2. Ultra Violet Spectroscopy
3. Visible Spectroscopy
Answer the question concisely. Maximum of 5 sentences.
Differentiate spectroscopy and spectrophotometry. Cite an example and discuss it in a chemical perspective.
Which is TRUE for spectroscopy of a mixture?
A.
The absorbance for a mixture at a particular wavelength is the sum of the absorbances for the components that absorb at the particular wavelength.
B.
Spectrophotometers can differentiate between mixture components that absorb at the same wavelength.
C.
Each component in a mixture has the same molar absorptivity at the same wavelength.
D.
The concentration for each component in a mixture is easily calculated by least squares for guesses of each component when the individual spectra are well resolved.
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