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New method for the determination on saturation concentration of dichlorvos.

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Relation http://ir.cftri.com/4696/
 
Title New method for the determination on saturation concentration of dichlorvos.
 
Creator Rangaswamy, J. R.
Muthu, M.
 
Subject 26 Pesticide Chemistry
17 Toxicology
 
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.
 
Date 1984
 
Type Article
PeerReviewed
 
Format pdf
 
Language en
 
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.