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Unformatted text preview: A large portion of this course deals with methods
that are used to determine how much of a
material is present.
We need to review the general steps that are
taken for any quantitative method.
These steps are taken to insure an accurate
and reliable answer. For most methods, we measure a response that
is proportional to the concentration of our
Gravimetric - Weight of a precipitate.
Titration - Volume of a titrant required.
Spectrophotometric - light absorbed.
Chromatographic - peak area. We must establish the relationship between
measured response and concentration of our
Canalyte = f(x)
X = concentration
= technique response. Most methods attempt to make f(x) a linear relationship
Canalyte = mX + b Each method includes many steps that one must
consider before doing even one analysis.
Each is dependent on the technique to be used,
the type of sample and the desired results.
As we discuss each method, we’ll consider these
factors and how to best address them. ...
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This note was uploaded on 12/06/2011 for the course CHEM 300 taught by Professor Jameshardy during the Fall '10 term at The University of Akron.
- Fall '10