Manual of Pesticide Residue Analysis, Vol. 1
The book consists of four parts, the first being an introduction and general description of sampling methods and basic concepts of residue analysis, eg. limits of detection and reporting of analytical results. Part 2 contains six methods for cleanup of crude extracts, including column and thin layer chromatography, sweep codistillation, filtration of absorbed lipids, and a heavy emphasis on gel permeation chromatography. Part 3 contains 23 methods for individual compounds and part 4, 17 multiresidue methods for a variety of classes of pesticides, not including carbamates. Volume 2 of the manual is intended to include more methods for individual compounds and new multiresidue methods, as well as cumulative indexes for both volumes.
The information presented in the introduction is very brief and selective (part 1 consists of only 48 pages) and more detail regarding general concepts of analysis would have been welcome. There is an interesting chapter on equipment and methods for the processing of small aliquots of crop extracts, which allows a major saving in solvents and time. Unfortunately there is no mention of these techniques in any of the methods included in the book. There is also a helpful chapter on the determination of the limit of detection and the limit of determination of a given method.
The intent of the book is to present methods which have been validated by at least one other laboratory besides that of the author. As such it is not intended to be a current review of the "state-of-the-art" of residue analysis. The methods do not include a literature survey, and few references are given. A useful feature of each method is a summary of physical and chemical properties of the compound, including its structural formula. The methods for two of the chemicals I am most familiar with (aldicarb and methomyl) use gas chromatographic determination of a degradation product of the parent compound. Both methods originated 20 years ago and have been largely superceded by high performance liquid chromatographic determination. None of the methods outlined uses capillary gas chromatography. In general it seems that the methods given represent the "tried and true" as opposed to the latest technology.
The book may be useful for an analyst looking for a compilation of validated methods, though this need could perhaps be better satisfied in North America by the "Official Methods of Analysis of the AOAC" or the US Food and Drug Administration's "Pesticides Analytical Manual".
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|Author:||McGarvey, Brian D.|
|Publication:||Canadian Chemical News|
|Article Type:||Book Review|
|Date:||May 1, 1989|
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