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 9, Problem 9.16QAP
Interpretation Introduction
Interpretation:
The lead concentration in parts per million (ppm) in a canned orange juice sample needs to be determined.
Concept introduction:
Spectral lines are lines which help in identifying the atoms and molecules. These are a result of absorption or emission of light in a comparatively narrower frequency range compared to the frequencies nearby.
In a defined space, the amount of a substance is its concentration. A substance’s capacity to absorb specific
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Consider a chromatography column in which Vs= Vm/5. Find the retention factor if Kd= 3 and Kd= 30.
To improve chromatographic separation, you must:
Increase the number of theoretical plates on the column.
Increase the height of theoretical plates on the column.
Increase both the number and height of theoretical plates on the column.
Increasing the flow rate of the mobile phase would
Increase longitudinal diffusion
Increase broadening due to mass transfer
Increase broadening due to multiple paths
You can improve the separation of components in gas chromatography by:
Rasing the temperature of the injection port
Rasing the temperature of the column isothermally
Rasing the temperature of the column using temperature programming
In GC, separation between two different solutes occurs because
the solutes have different solubilities in the mobile phase
the solutes volatilize at different rates in the injector
the solutes spend different amounts of time in the stationary phase
please draw and example of the following:
Show the base pair connection(hydrogen bond) in DNA and RNA
Chapter 9 Solutions
Principles of Instrumental Analysis
Ch. 9 - Prob. 9.1QAPCh. 9 - Prob. 9.2QAPCh. 9 - Why is an electrothermal atomizer more sensitive...Ch. 9 - Prob. 9.4QAPCh. 9 - Prob. 9.5QAPCh. 9 - Prob. 9.6QAPCh. 9 - Prob. 9.7QAPCh. 9 - Prob. 9.8QAPCh. 9 - Prob. 9.9QAPCh. 9 - Prob. 9.10QAP
Ch. 9 - Prob. 9.11QAPCh. 9 - Prob. 9.12QAPCh. 9 - Prob. 9.13QAPCh. 9 - Prob. 9.14QAPCh. 9 - Prob. 9.15QAPCh. 9 - Prob. 9.16QAPCh. 9 - Prob. 9.17QAPCh. 9 - In the concentration range of 1 to 100 g/mL P,...Ch. 9 - Prob. 9.19QAPCh. 9 - Prob. 9.20QAPCh. 9 - Prob. 9.21QAPCh. 9 - The chromium in an aqueous sample was determined...Ch. 9 - Prob. 9.23QAP
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