New method for the determination on saturation concentration of dichlorvos.
IR@CFTRI: CSIR-Central Food Technological Research Institute, Mysore
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http://ir.cftri.com/4696/
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| Title |
New method for the determination on saturation concentration of dichlorvos.
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| Creator |
Rangaswamy, J. R.
Muthu, M. |
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| Subject |
26 Pesticide Chemistry
17 Toxicology |
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| Description |
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.
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| Date |
1984
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| Type |
Article
PeerReviewed |
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| Format |
pdf
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| Language |
en
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| Identifier |
http://ir.cftri.com/4696/1/Mikrochimica%20Acta%20%5BWien%5D%201984%20III%2C%20433--443.pdf
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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