INVESTIGATION OF OCCURRENCE AND LEVEL OF ORGANOCHILORINE AND OTHER PESTICIDES IN THE IAR LAKE, SAMARU - ZARIA.
INVESTIGATION OF OCCURRENCE AND LEVEL OF ORGANOCHILORINE AND OTHER PESTICIDES IN THE IAR LAKE, SAMARU - ZARIA.
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Date
1982
Authors
ONYEBUEKE, ANTHONY EBELENDU
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Abstract
This thesis reviews the history of the development
and use of pesticides, and of residue analytical
techniques. References are provided on the distribution,
persistence and toxicity of pesticides.
The optimal conditions for gas chromatographic
analysis of five organochlorines and one carbamate with
a Varian Model 3700 Gas Chromatograph were established.
The recoveries of five organochlorines in water using the
EPA method of extraction and clean-up were determined.
Disti1led-and-deionized water was analyzed for pesticide
residues.
A lake sampling device to be operated from a boat was
designed and is described. Description Is also given of
sampling techniques designed for lake environments. A
pilot sample from the IAR Lake was analyzed for pesticide
residues prior to analysis of real lake water samples.
Possible sources of error are discussed.
The analytical results are compared with documented data
on residue levels for both polluted and unpolluted waters,
and with permissible levels of residues in potable and
surface waters. Suggestions for further work are made;
and, finally, a statement is made on pesticide pollution
of the 1AR Lake.
Description
THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE
REQUIREMENTS FOR THE MASTER OF SCIENCE DEGREE IN
ANALYTICAL CHEMISTRY
DEPARTMENT OF CHEMISTRY,
AHMADU BELLO UNIVERSITY
ZARIA.
1982
Keywords
INVESTIGATION,, OCCURRENCE,, ORGANOCHILORINE,, PESTICIDES,, LAKE, SAMARU - ZARIA