Electrochemical determination and removal of bentazon in natural waters using diamond electrodes

• Grant number: 15/04359-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2015
• End date: April 30, 2016
• Field of knowledge: Engineering - Sanitary Engineering
• Principal Investigator: Lucia Codognoto de Oliveira
• Grantee: Glaucia Lopes dos Santos
• Host Institution: Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF). Universidade Federal de São Paulo (UNIFESP). Campus Diadema. Diadema , SP, Brazil

Abstract

The intense and indiscriminate use of pesticides has been causing serious damage to the environment. The objective of this project is the development of a methodology for determining and electrochemical removal of the pesticide bentazon in natural waters using electroanalytical techniques allied to the boron doped diamond electrode. The potential of the methodology will be evaluated in determining bentazon in natural waters, which will be collected in Billings barrage (Diadema - SP). Thus, it is expected to obtain a methodology for lower cost with less analysis time and minimal treatment of samples. The electrochemical oxidation of bentazon will be studied conducting exhaustive electrolysis to high potentials in order to formation of hydroxyl radicals, that are strong oxidizing agents and can thus get the full oxidation of bentazon (electrochemical combustion). The analysis of the products formed will be performed by ultraviolet-visible (UV-vis) and square wave voltammetry.