Journal
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Volume 20, Issue 5, Pages 993-998Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0103-50532009000500026
Keywords
derivative spectrophotometry; Zineb; sodium molybdate; commercial samples
Categories
Ask authors/readers for more resources
A derivative spectrophotometric procedure was developed for the determination of zinc( II) ethylenebisdithiocarbamate, Zineb, after formation of its blue colored complex with sodium molybdate in acidic medium. The Beer's law is obeyed up to 40 mu g mL(-1) of Zineb at 956 nm. The detection limit was 0.006 mu g mL(-1) for Zineb when S/N ratio is 3 taking into account various parameters, such as the effect of acid concentration. The interference of a large number of ions on the determination of Zineb was evaluated. Most of the alkaline metals and metal salts did not interfere. The procedure presented proper sensitivity and it was applied for determining Zineb in food stuffs and commercial samples of Dithane Z 78 and Hexathane 75% W. P.. Results were compared with earlier reported methods. Zineb was successfully determined without any interferences in the presence of other dithiocarbamates like ziram, thiram, ferbam etc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available