title: Extraction spectrophotometric determination of maneb with 1-(2'-pyridylazo)-2-naphthol (PAN).
abstract: A rapid, sensitive, simple and selective spectrophotometric method has been developed for the determination of micro-quantities of maneb (manganese ethylenebisdithiocarbamate) after extraction of the manganese-PAN complex in isobutyl methyl ketone (MIBK). The complex absorbs strongly at 550 nm. Beer's law is obeyed over the concentration range 0.37-3.75 microg/ml. The molar absorptivity was found to be 4.1 x 10(4) l. mole(-1) . cm(-1). The developed method has been applied to the determination of maneb in commercial formulations, synthetic mixtures, grain and in the presence of various other dithiocarbamates.
authors.affiliation: Department of Chemistry, Punjabi University, Patiala-147002, India.
authors.forename: A L
authors.initials: AL
authors.lastname: Rao
authors.forename: A K
authors.initials: AK
authors.lastname: Malik
authors.forename: J
authors.initials: J
authors.lastname: Kapoor