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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What is the formula to calculate the concentration of BSA in the sample. The absorption coefficient at 280nm: k1^mg/ml = 0.7 [mL/mg.cm].
At 580 nm, the wavelength of its maximum absorption, the complex Fe(SCN)2+ has a molar absorptivity of 7.00 X 103 L mol-1 cm-1. Calculate
(a) the absorbance of a 2.50 X 10-5 M solution of the complex at 580 nm in a 1.00-cm cell.
(b) the absorbance of the solution in which the concentration of the complex is twice that in part (a)
(c) the transmittance of the solutions described in parts (a) and (b)
(d) the absorbance of a solution that has half the transmittance of that described in part (a)
answer letter d please
At 580 nm, the wavelength of its maximum absorption, the complex Fe(SCN)2+ has a molar absorptivity of 7.00 X 103 L mol-1 cm-1. Calculate
(a) the absorbance of a 2.50 X 10-5 M solution of the complex at 580 nm in a 1.00-cm cell.
(b) the absorbance of the solution in which the concentration of the complex is twice that in part (a)
(c) the transmittance of the solutions described in parts (a) and (b)
(d) the absorbance of a solution that has half the transmittance of that described 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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