Simultaneous Detection of Nitrite and Nitrate in Celeries and Carrots

Abstract

Abstract:In this study, the anions nitrite ion (NO 2 -) and nitrate ion (NO 3 -) in celeries and carrots were detected with the technique of ion chromatography. A Dionex ICS-2000 ion chromatograph was used to detect the content of NO 2 -and NO 3 -in celeries and carrots. NO 2 -and NO 3 -were separated on a DIONEX Ionpac AS19 A-4 mm ion-exchange column and an Iopac AG AS19 A-4 mm guard column. The eluant was suppressed with an anion electrical self-regenerating suppressor (ASRS 300) and the content of NO 2 -and NO 3 -was detected with a conductivity detector. The detection limits were obtained for anions NO 2 -and NO 3 -. The present results showed that the ion chromatography was a suitable technique for the simultaneous determination of NO 2 -and NO 3 -in vegetables.