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  • Pesticide analysis in coffee leaves using a quick, easy, cheap, effective, rugged and safe approach and liquid chromatography tandem mass spectrometry: Optimization of the clean-up step.

Pesticide analysis in coffee leaves using a quick, easy, cheap, effective, rugged and safe approach and liquid chromatography tandem mass spectrometry: Optimization of the clean-up step.

Journal of chromatography. A (2017-07-20)
Maria Teresa Salles Trevisan, Robert Wyn Owen, Pau Calatayud-Vernich, Andrea Breuer, Yolanda Picó
ABSTRACT

An analytical method using a quick, easy, cheap, effective, rugged and safe (QuEChERS) procedure for multi-residue determination of 52 pesticides in coffee leaf extractshas been developed and validated according to SANTE/11945/2015 guidelines. Different sorbent combinations for dispersive solid phase extraction (d-SPE) clean-up as well as dispersive liquid-liquid microextraction (DLLME) were tested. The relative standard deviations (RSDs) for the recovery of 87-94% of pesticides added to coffee leaf extracts,was ≤20% for samples spiked at concentrations up to 50ng*g

MATERIALS
Product Number
Brand
Product Description

Supelco
Supel QuE, PSA/ENVI-Carb (EN) Cleanup Tube 2, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA/ENVI-Carb Tube 2, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18 Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/ENVI-Carb Tube 1, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep+ Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, PSA/C18 (EN) Cleanup Tube, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA/ENVI-Carb (EN) Cleanup Tube 1, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA (EN) Cleanup Tube, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, Z-Sep+ Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep/C18 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep Bulk
Supelco
Supel QuE, Acetate Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, Z-Sep+ Bulk, pkg of 20 g
Supelco
Supel QuE, Non-Buffered Tube 2, pk of 50, suitable for PFAS testing
Supelco
Supel QuE, Non-Buffered Tube 1, pk of 50
Supelco
Supel QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
Supelco
Supel QuE, PSA Tube, pk of 50, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, Citrate/Sodium Bicarbonate Tube, pk of 50
Supelco
Supel QuE, Z-Sep/C18 Tube, centrifuge tube volume 2 mL, pack of 100
Supelco
Supel QuE, PSA/C18 Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, Verde Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, PSA Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18 Tube (Shaker Compatible), pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible