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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.

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, Citrate/Sodium Bicarbonate Tube, pk of 50
Supelco
Supel QuE, Acetate Tube, pk of 50, AOAC® 2007.01
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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, Empty Centrifuge Tube with Lid, centrifuge tube volume 50 mL, pk of 50, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18 Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18 Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, Non-Buffered Tube 2, pk of 50
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Supel QuE, Non-Buffered Tube 1, pk of 50
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Supel QuE, Z-Sep with MgSO4 Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep+ Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
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Supel QuE, Z-Sep Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
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Supel QuE, Z-Sep with MgSO4 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
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Supel QuE, Z-Sep+ with MgSO4 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
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Supel QuE, Z-Sep/C18 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, Z-Sep/C18 Tube, centrifuge tube volume 2 mL, pack of 100
Supelco
Supel QuE, Z-Sep+ Bulk, pkg of 20 g
Supelco
Supel QuE, Z-Sep+ Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep Bulk
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep/C18 Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep+ Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep with MgSO4 Tube, centrifuge tube volume 12 mL, pack of 50 ea