6. In a flame spectrometric determination of sodium, lithium is used as an internal standard. Assume thespectrum of a standard solution that contains 2.00 ppm Na and 100 ppm Li shows two peaks withintensities of Ina= 4.22 and IL= 9.24, respectively. An unknown sample solution that also contains 100ppm Li gives two peaks with intensities of Ina = 6.16 and I= 8.24, respectively. Calculate theconcentration of Na in the unknown sample in ppm.А. 3.08 ppmВ. 6.16 рpmC. 4.22 ppmD. 3.27 ppmЕ. 12.1 ppm

6. In a flame spectrometric determination of sodium, lithium is used as an internal standard. Assume the spectrum of a standard solution that contains 2.00 ppm Na and 100 ppm Li shows two peaks with intensities of Ina= 4.22 and I= 9.24, respectively. An unknown sample solution that also contains 100 ppm Li gives two peaks with intensities of Ina = 6.16 and Iu= 8.24, respectively. Calculate the concentration of Na in the unknown sample in ppm. А. 3.08 рpm В. 6.16 рpm C. 4.22 ppm D. 3.27 ppm Е. 12.1 ppm

6. In a flame spectrometric determination of sodium, lithium is used as an internal standard. Assume the spectrum of a standard solution that contains 2.00 ppm Na and 100 ppm Li shows two peaks with intensities of Ina= 4.22 and I= 9.24, respectively. An unknown sample solution that also contains 100 ppm Li gives two peaks with intensities of Ina = 6.16 and Iu= 8.24, respectively. Calculate the concentration of Na in the unknown sample in ppm. А. 3.08 рpm В. 6.16 рpm C. 4.22 ppm D. 3.27 ppm Е. 12.1 ppm

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter28: High-performance Liquid Chromatography

Section: Chapter Questions

Problem 28.17QAP: Mass spectrometry is an extremely versatile detection system for GC. However, interfacing an HPLC...

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Mass spectrometry is an extremely versatile detection system for GC. However, interfacing an HPLC system to a mass spectrometer is a much more difficult task. Describe the major reasons why it is more difficult to combine HPLC with mass spectrometry than it is to combine GC with mass spectrometry.
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