The calcium content of a natural water sample was analyzed by flame atomic absorption spectrometry. A 5-mL sample of natural water was added to a 50-mL volumetric flask and diluted to mark with distilled water. The solution gave an absorbance of 0.457. Another 5-mL portion of the water sample was placed in a 50-mL volumetric flask and treated with 1.00 mL of a standard solution containing 0.10 mg mL-1 and diluted to mark. The mixture gave an absorbance of 0.542. Calculate the concentration (in mg mL-1) of calcium in the natural water. 0.136 O 0.194 0.108 0.142
The calcium content of a natural water sample was analyzed by flame atomic absorption spectrometry. A 5-mL sample of natural water was added to a 50-mL volumetric flask and diluted to mark with distilled water. The solution gave an absorbance of 0.457. Another 5-mL portion of the water sample was placed in a 50-mL volumetric flask and treated with 1.00 mL of a standard solution containing 0.10 mg mL-1 and diluted to mark. The mixture gave an absorbance of 0.542. Calculate the concentration (in mg mL-1) of calcium in the natural water. 0.136 O 0.194 0.108 0.142
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
Chapter10: Atomic Emission Spectrometry
Section: Chapter Questions
Problem 10.11QAP
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