Romanian scientists have developed a quick and easy analytical method to determine whether wines have pesticide residues below the EU maximum residue limit. They focused on detecting six pesticide residues in red, rosé and white wines. The insecticides chosen were acetamiprid, chlorantraniliprole, and iprovalicarb, myclobutanil, tebuconazole, and oxythipiproline.
The researchers used a modified QueChERS method to extract the samples. 10 mL of sample and 10 mL of acetonitrile were added to a 50 mL centrifuge tube and vortexed for 30 sec. 4 g. magnesium sulfate and 2 g. sodium chloride added (UCT Part ECQUUS2-MP . available as) and stirred for 1 minute. After centrifugation at 5000 rpm, a 1 mL aliquot of the extract was pushed through a quick quencher cartridge (UCT PART ECPURMPSMC) 0.25 ml. The filtrate was added to a 2 mL vial, and 5 ppm of TPP surrogate was added with 0.74 mL of ultrapure water. The samples were analyzed by LC-MS/MS.
All samples were spiked at a concentration of 5 ng/mL. All spiked recoveries were within the range of 70–130%. The recovery was not affected by the matrix effect.
For more details refer the original paper below.
Dumitriu Gaber, G.-D.; Gabar, I.; Kukolia, EI; Kostache, T.; Rambu, D.; Kotia, VV; Teodosiu, C. Investigation of six common pesticide residues and dietary risk assessments of Romanian wine varieties. Foods 2022,