Rangaswamy, J. R. and Muthu, M. (1984) New method for the determination on saturation concentration of dichlorvos. Mikrochimica Acta, 3. pp. 433-443.
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Abstract
Saturation concenrtation of DDVP at room temperature (28 ~
has been determined by a colorimetric method. The saturation
concentration at 28 o are 9.39 and 8.55 rag/1 for AR and technical
grade samples respectively. The method consists of coupling DDVP
vapours in gas-tight tubes with alkaline resorcinol at a water bath
of 60--65 ~ when a yellow chromophore with an absorption maximum at 490 nm is formed. The linear relationship between the
concentration of DDVP and absorbance at 490 nm holds good in
the range of 1 to 20 #g DDVP. The method has been checked with
a gas chromatographic method for accuracy. These values are also
verified by a physical method based on Dalton's Law of partial
pressures in a gaseous mixture.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Saturation concentration, liquid insecticides, Dichlorvos |
| Subjects: | 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 26 Pesticide Chemistry 600 Technology > 01 Medical sciences > 17 Toxicology |
| Divisions: | Food Protectants and Infestation Control |
| Depositing User: | Food Sci. & Technol. Information Services |
| Date Deposited: | 07 Mar 2018 03:52 |
| Last Modified: | 07 Mar 2018 03:52 |
| URI: | http://ir.cftri.res.in/id/eprint/4696 |
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