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Analysis Of Carbamate Pesticide Residues By Derivatization, Chromatography And Other Methods

Rajesh, Gopaul (2004) Analysis Of Carbamate Pesticide Residues By Derivatization, Chromatography And Other Methods. Masters thesis, University of Mysore.

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Abstract

This Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page.

Item Type: Thesis (Masters)
Additional Information: <p align="justify">Pesticides find their application worldwide. As a consequence, we are exposed to multiple residues in daily life which can have unanticipated adverse effects on our health. This can be through the intake of food commodities such as fresh fruits and vegetables, grains or even directly during pesticide application. The presence of carbamates in such food items is also likely as these chemicals are widely used for crop protection and they have proved to have a very high insect toxicity. However, an advantageous feature of carbamates is that they are less persistent than organochlorines and produce fewer toxic degradation products. Nevertheless, because carbamates are inhibitors of acetylcholinesterase, they are considered toxic for the environment and for human beings. With increasing demand for monitoring pesticide residues there is the need for novel analytical techniques or modification of current ones to screen food for presence of pesticides. Such techniques determine whether a compound or class of compounds is present at some designated tolerance level in a matrix. In addition, regulatory agencies involved in monitoring of pesticide residues in foods require fast and efficient multiresidue methods with a broad scope of application in order to maximize the coverage of their monitoring programme. The techniques involved in pesticide residue analysis have greatly evolved over the years. Gas chromatography, high performance liquid chromatography coupled with mass spectrometry have brought sensitivity and detection levels from the former trace to parts per million (ppm), parts per billion (ppb) and even parts per trillion (ppt) levels, bringing revolutionary changes in the field of residue analysis. However, as in the case of carbamates, some pesticides are heat labile and cannot resist the high temperatures involved in GC. In such circumstances, traditional methods like enzyme assay, ultraviolet and visible spectrophotometry and thin layer chromatography still find their application. In addition not all laboratories are equipped with GC or HPLC. In such a case the former techniques do provide satisfactory results.</p>
Uncontrolled Keywords: pesticides carbamate pesticides analytical techniques
Subjects: 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 26 Pesticide Chemistry
600 Technology > 08 Food technology > 01 Analysis
Divisions: Human Resource Development
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 26 Feb 2007
Last Modified: 28 Dec 2011 09:26
URI: http://ir.cftri.com/id/eprint/405

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