ICAR Research Data Repository for Knowledge Management
SORPTION OF THREE PESTICIDES IN SOILS AS INFLUENCED BY CLAY AND SOIL ORGANIC
KrishiKosh
View Archive Info| Field | Value | |
| Title |
SORPTION OF THREE PESTICIDES IN SOILS AS INFLUENCED BY CLAY AND SOIL ORGANIC
M Sc |
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| Creator |
NEETHU NARAYANAN
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| Contributor |
V. T. Gajbhiye
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| Subject |
adsorption, pesticides, organochlorine compounds, concentrates, clay, organic matter, wood, irrigation, fractionation, extraction
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| Description |
T-8611
A multiresidue method for the analysis of three pesticides (chlorothalonil, chlorpyrifos and pendimethalin) in soil and water by GC has been standardized. The instrument detection limit was found to be 0.001μg/mL for the selected pesticides. Most efficient solvent for extraction of these pesticides in water was DCM (dichloromethane) with an efficiency of 87.5- 90.9%. No clean up was required for water samples as they were free from interfering coextractives. Dipping and shaking method using acetone was found to be the best for soil extraction with efficiency of 83.7-89.6%. Amongst various adsorbents and solvent systems for elution, alumina as an adsorbent and 50% acetone- hexane as eluent gave maximum efficiency of 89.6-91.6%. Overall method recovery from soils ranged between 80.8-82%. The limit of quantification for chlorothalonil, chlorpyrifos and pendimethalin was found to be 0.001 μg/mL in water and 0.005 μg/g in soil. |
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| Date |
2016-09-21T19:54:07Z
2016-09-21T19:54:07Z 2012 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/78240
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| Format |
application/pdf
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| Publisher |
IARI, DIVISION OF AGRICULTURAL CHEMICALS
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