Provider: - Institution: - Data provided by Europeana Collections- Razvijena je multirezidualna metoda za određivanje 25 pesticida u vinima plinskom kromatografijom vezanom sa spektrometrijom masa. Optimirana je ekstrakcija na čvrstoj fazi uz sorbens OASIS HLB te postupak ekstrakcije QuEChERS s težištem na optimizaciji koncentracije dodanih soli radi podešavanja raspodjele analita između dviju faza. Za svaki postupak priprave uzorka provedena je validacija za crno i bijelo vino kao dvije zasebne matrice uzorka. Granice određivanja pesticida za oba postupka bile su u rasponu od 0,01 g L1 do 250 g L-1. Preciznost, izražena kao relativna standardna devijacija, bila je <20 %, dok je točnost, izražena kao analitički povrat, za većinu pesticida bila u rasponu od 70 % do 120 %. Ispitan je utjecaj matrice na određivanje pesticida pri čemu je izračunata djelotvornost postupaka priprave uzorka. U okviru validacije metoda procijenjena je mjerna nesigurnost koja je bila <50 % za većinu pesticida. Predloženim analitičkim postupcima analizirana su 63 uzorka različitih vina da bi se dobio prvi uvid u koncentracije ostataka pesticida u vinima s područja Hrvatske.- A new multiresidue method was developed for determination of 25 pesticides in wines by gas chromatography mass spectrometry. Two sample preparation procedures were optimized; solid phase extraction using OASIS HLB and QuEChERS procedure, where salt concentrations were optimised in order to adjust the distribution of pesticides between two immiscible phases. Method validation, including uncertainty estimation (<50 % for most pesticides), was performed independently for red and white wine as two different matrices and for each sample preparation procedure. Limits of quantification were between 0,01 g L-1 and 250 g L-1. The recoveries of most pesticides were between 70 % and 120 % with relative standard deviations <20 %. The matrix effect was investigated and the quality of sample preparation procedures has been evaluated in terms of extraction efficiency. The proposed analytical procedures were applied to 63 Croatian wine samples of different varieties in order to provide the first insight into pesticide residue concentrations in Croatian wines.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana