You are asked to do quality control and quality assurance during the determination of lead concentration in a city's tap water using ICP-AES. Plotting ICP -AES signal as a function of lead concentration (in ppb) gave you a linear regression equation of y = 1.97x + 1.50 with an R^2=0.99. The instrumental response (signal) had a standard deviation of 0.75. What is the limit of quantitation in terms of lead concentration (ppb) of this instrumental method? %3D

Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter15: Electrophoresis And Other Separation Methods
Section: Chapter Questions
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You are asked to do quality control and quality
assurance during the determination of lead
concentration in a city's tap water using ICP-AES.
Plotting ICP -AES signal as a function of lead
concentration (in ppb) gave you a linear regression
equation of y = 1.97x + 1.50 with an R^2=0.99. The
instrumental response (signal) had a standard
deviation of 0.75. What is the limit of quantitation in
terms of lead concentration (ppb) of this
instrumental method?
Transcribed Image Text:You are asked to do quality control and quality assurance during the determination of lead concentration in a city's tap water using ICP-AES. Plotting ICP -AES signal as a function of lead concentration (in ppb) gave you a linear regression equation of y = 1.97x + 1.50 with an R^2=0.99. The instrumental response (signal) had a standard deviation of 0.75. What is the limit of quantitation in terms of lead concentration (ppb) of this instrumental method?
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