| Abstract Title: | Analysis of Glyphosate, Glufosinate and AMPA in environmental water with direct injection |
| Presenter Name: | Mr Janitha De Alwis |
| Company/Organisation: | Waters Corporation |
| Country: | United Kingdom |
Abstract Information :
Monitoring highly polar, small organic pesticides in waters as well as in food presents an analytical challenge. The purpose of this work was to demonstrate a direct injection UHPLC-MS/MS method for the determination of highly polar anionic pesticides in drinking and environmental waters. The method performance study was completed on an ACQUITYTM UPLC I-Class PLUS System with a XevoTM TQ Absolute Mass Spectrometry. A method validation study was carried out on drinking, reservoir, river, and ground water. The method performance was assessed for glyphosate, AMPA and glufosinate using 2 spike levels at 20 and 60 ng/L for all analytes, with 11 replicates through inter-day and intra-day testing. The coefficients of determination (r2>0.999) and residuals (<10%) were all excellent. Average method performance for trueness was between 95 and 103% across all matrices, while the RSDs were below 11%. This poster demonstrates the performance of a method, combining stable retention on Waters’ Anionic Polar Pesticide Column (APPC), ultra-performance chromatography on the ACQUITY I-Class system and absolute MS power with the Xevo TQ Absolute Mass Spectrometry to provide a fast and robust solution to one of the most challenging and time-consuming applications in environmental analysis.
