Spectrophotometric Determination of Fenpropathrin in its Formulations and Water Samples

Autor:	P. Subrahmanyam, P. Chiranjeevi, B. Krishna Priya, K. Dakshayani
Jazyk:	angličtina
Rok vydání:	2007
Předmět:	chemistry.chemical_classification Reaction conditions Phenyl hydrazine Chromatography General Chemistry Molar absorptivity Aldehyde Benzaldehyde lcsh:Chemistry Hydrolysis chemistry.chemical_compound chemistry lcsh:QD1-999 Anthranilic acid Fenpropathrin
Zdroj:	E-Journal of Chemistry, Vol 4, Iss 4, Pp 480-486 (2007)
ISSN:	2090-9810 0973-4945
Popis:	Novel spectrophotometric methods were developed for the determination of fenpropathrin in insecticidal formulations and water samples. The methods were based on the hydrolysis of fenpropathrin with ethanolic KOH to form 3-phenoxy benzaldehyde. The resultant aldehyde group was condensed with anthranilic acid in presence of basic medium to form yellowish red color product having λmaxof 485 nm or condensed with 2-chloro phenyl hydrazine to form pink color product having λmaxof 557 nm. The color derivatives were correspondingly stable for 5 and 8 days. The Beer's law was obeyed over the range from 0.03-10.0 µg mL-1and molar absorptivity 2.586×104L mol-1cm-1for anthranilic acid and from 0.02-8.0 µg mL-1and molar absorptivity 3.924×104L mol-1cm-1for 2-chloro phenyl hydrazine were observed. The optimum reaction conditions and other analytical parameters were established. The proposed methods have been applied for the analysis of water samples.
Databáze:	OpenAIRE
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