A Simple Electrochemical Method for Nitrate Determination in Leafy Vegetables

Abstract

A fast and easy electrochemical method for nitrate determination in leafy vegetables was developed. It is a much cheaper method compared to the HPLC method or chemiluminescence detection, the most sensitive method in determination of nitrate, which requires expensive instrumentation. A nitrate ion selective electrode was employed and the electric potentials were measured before and after a series of standard nitrate solutions added to the vegetable sample solution without any pre-treatment.