The same water sample from the cave was subjected to an analysis to determine its nitrite concentration. Using a spectrophotometer, the following results were obtained for standard solutions of nitrite and for the unknown. Absorbance at 550 Solution nm 2.00 µM 0.065 6.00 µM 0.205 ww 10.00 µM 0.338 14.00 µM 0.474 18.00 µM 0.598 Unknown 0.402 a. Draw a calibration curve base on the data from the standards. b. Find the slope and intercept of the curve. c. Determine the concentration of nitrite in the water sample.

The same water sample from the cave was subjected to an analysis to determine its nitrite concentration. Using a spectrophotometer, the following results were obtained for standard solutions of nitrite and for the unknown. Absorbance at 550 Solution nm 2.00 µM 0.065 6.00 µM 0.205 ww 10.00 µM 0.338 14.00 µM 0.474 18.00 µM 0.598 Unknown 0.402 a. Draw a calibration curve base on the data from the standards. b. Find the slope and intercept of the curve. c. Determine the concentration of nitrite in the water sample.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.24QAP

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