Ultra Trace Determination of 31 Pesticides in Water Samples

A liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based method for the detection of pesticides in tap and treat wastewater was developed and validated by Labaqua (Spain) according to the ISO / IEC 17025:1999. Key features of this method include direct injection of 100µL of sample, an 11 min separation by means of a rapid resolution liquid chromatography system with a 4.6mm×50mm, 1.8µm particle size reverse phase column and detection by electrospray ionization (ESI) MS–MS. Key features of this method include direct injection of 100μL of sample, an 11 min separation by Means of a rapid resolution liquid chromatography system with a 4.6mm × 50mm, 1.8μm particle size reverse phase column and detection by electrospray ionization (ESI)-MS MS. The limits of detection were below 15ng L−1 and correlation coefficients for the calibration curves in the range of 30–2000 ng L−1 were higher than 0.99. The limits of detection Were Below 15ng L-1 and correlation Coefficients for the calibration curves in the range of 30-2000 ng L-1 Were Higher Than 0.99. Precision was always below 20% and accuracy was confirmed by external evaluation. Always Was Precision and accuracy 20% Below Was Confirmed by external evaluation. The main advantages of this method are direct injection of sample without preparative procedures and low limits of detection that fulfill the requirements established by the current European regulations governing pesticide detection. The main Advantages of this method are direct injection of sample GETTING Without Routines and low limits of detection That Fulfill The Requirements Established by the current European Pesticide Regulations Governing detection.