Nonlinear Computer Modeling of Chemical and Biochemical Data

Author: James Rusling, Thomas Kumosinski List Price: $98.95 Our Price: Click to see the latest and low price ISBN: 0126044902 Publisher: Academic Press (24 January, 1996) Edition: Hardcover Sales Rank: 860,021 Average Customer Rating: 3 out of 5

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y=A'exp(-kt)+mt+b (2.22)

is transformed by taking the logarithm of both sides, the authors say

ln y=-kt+lnA'+ln(mt+b) (2.23)

is obtained.

This is wrong!

For instance,

17=10+7 but, ln 17 is NOT equal to ln 10 + ln 7.

In page 17, a very important point about linearizing the nonlinear data is mentioned. A weighted lease-squares is needed in logarithmic transformation.

But, in many actual applications, HPLC method is used. In such data, the noise (error) is expressed as coefficient of variation, not a constant variance.

In this case, weighting is not really needed. A practical aspect like this has to be explored in more details.

This book however has collected many topics in chemical data analysis from literatures, and can be a good reference in many disciplines.