In the development o f an analytical method for the quantitative analysis o f iron using Atomic Absorption spectrophotometry (AAS), a linear calibration curve for standards o f 0.00, 5.00, 10.00, 15.00 and 20.00 ppm was prepared. An iron ore sample with an expected iron content o f 40-60% w/w is to be analysed by this method. An approximately 0.5-g sample is taken,
In the development o f an analytical method for the quantitative analysis o f iron using Atomic Absorption spectrophotometry (AAS), a linear calibration curve for standards o f 0.00, 5.00, 10.00, 15.00 and 20.00 ppm was prepared. An iron ore sample with an expected iron content o f 40-60% w/w is to be analysed by this method. An approximately 0.5-g sample is taken,
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
Chapter14: Applications Of Ultraviolet-visible Molecular Absorption Spectrometry
Section: Chapter Questions
Problem 14.12QAP
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Question
In the development o f an analytical method for the quantitative analysis o f iron using Atomic
Absorption spectrophotometry (AAS), a linear calibration curve for standards o f 0.00, 5.00,
10.00, 15.00 and 20.00 ppm was prepared. An iron ore sample with an expected iron content
o f 40-60% w/w is to be analysed by this method. An approximately 0.5-g sample is taken,
dissolved in a minimum amount o f concentrated HC1 and diluted to 1 L in a volumetric flask
using distilled water. A 5.00-mL aliquot is removed with a pipette. With explanation, to what
volume (10, 25, 50, 100, 250 500 or 1000 mL) should the 5.00 mL aliquot be diluted, to
minimize the uncertainty in the analysis?
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