The following volumes of a solution containing 1.10 ppm of Zn were pipetted into separatory funnels each containing 5.00 ml of an unknown zin c solution: 0.00, 1.00, 4.00, 8.00 and 12.00. Each was extracted with three 5-ml aliquots of CC, containing an excess of 8-hydroxyquinoline. The extracts were then diluted to 25.0 ml and their fluorescence measured with a fluorometer. Plot the data and calculate the concentration of zinc in the sample. ml standard Zn Fluorometer reading 0.000 6.12 1.00 7.81 4.00 11,16 8.00 15.68 12.00 20.64

The following volumes of a solution containing 1.10 ppm of Zn were pipetted into separatory funnels each containing 5.00 ml of an unknown zin c solution: 0.00, 1.00, 4.00, 8.00 and 12.00. Each was extracted with three 5-ml aliquots of CC, containing an excess of 8-hydroxyquinoline. The extracts were then diluted to 25.0 ml and their fluorescence measured with a fluorometer. Plot the data and calculate the concentration of zinc in the sample. ml standard Zn Fluorometer reading 0.000 6.12 1.00 7.81 4.00 11,16 8.00 15.68 12.00 20.64

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter27: Molecular Fluorescence Spectroscopy

Section: Chapter Questions

Problem 27.11QAP

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