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 9.18QAP
In the concentration range of 1 to 100 μg/mL P, phosphate suppresses the atomic absorption of Ca in a linear manner. The absorbancc levels off, however, between 100 and 300 μg/mL P. Explain. How can this effect be reduced?
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The complex formed between Cu(I) and 1,10-phenanthroline has a molar absorptivity of 7000 L mol-1 cm-1 at 435 nm, the wavelength of the maximum absorption. Calculate
(a) the absorbance of 8.50 X 10-5 solution of the complex when measured in a 1.00-cm cell at 435 nm.
(b) the percent transmittance of the solution in a part (a)
(c) the concentration of a solution that in a 5.00-cm cell has the same absorbance as the solution in part (a)
(d) the pathlength through a 3.40 X 10-5 M solution of the complex that is needed for an absorbance that is the same as the solution in part (a)
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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