Keywords
dapsone
spectrophotometry
assessment
formulations
environmental
How to Cite
Abstract
A simple, sensitive and selective spectrophotometric method for the assessment of carbofuranin various formulations and in environmental water samples is described. The method is based on the
coupling of hydrolyzed carbofuran with diazotized dapsone in alkaline medium at 0 – 4° C which gives
orange red colored product having the absorption maximum at 480 nm. The product is stable for 48 h.
Beer’s law is obeyed in the concentration range of 0.1 – 4.0 μg ml -1 . The molar absorptivity and Sandell’s
Sensitivity are 5.0 x 10 4 L mol-1 cm -1 and 4.4 ng cm -2 respectively. The method is highly reproducible
and is confirmed by RSD values (1.144 %). From the recovery studies it is found that this method is
accurate and it can be successfully employed for the determination of carbofuran.
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