Application Note: Fast and Sensitive Analysis of Paraquat and Diquat in Drinking Water
16 April 2013

This application note describes a fast and sensitive LC-MS/MS method for the determination of Paraquat and Diquat in drinking water. Using the Ultra Quat HPLC column and the AB SCIEX API 3200™LC/MS/MS System equipped with a Turbo V™ source, the limits of quantitation (LOQ) for this method in drinking water were 0.1 μg/L and 5 μg/L respectively for Diquat and Paraquat using a 10 μL injection volume without sample preparation prior to analysis.