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Development and validation of an RP-HPLC method for the determination of caffeine and preservatives (sodium benzoate and potassium sorbate) in sports and energy drinks
(Springer Science and Business Media LLC, 2025-06-20)
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Stojchevska, Simona
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MARKET RESEARCH - HOW INTERESTED ARE CONSUMERS IN MEAT PRODUCTS WITH FEWER E-NUMBERS IN THEIR DECLARATION
(University Ss. Cyril and Methodius in Skopje, 2021)
Silovska Nikolova, Aleksandra
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Velkoska-Markovska, Lenche
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DETERMINATION OF PESTICIDE RESIDUES IN WATER BY LIQUID CHROMATOGRAPHY
(ECOLOGICAL MOVEMENT OF NOVI SAD, 2018)
Velkoska-Markovska, Lenche
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Petanovska-Ilievska, Biljana
This paper presents the application of a new, precise and accurate high-performance liquid chromatography (HPLC) method with ultraviolet-diode array detection (UV-DAD) for determination of some organophosphorus, phenoxycarboxylic acid and organonitrogen pesticide residues in water samples. The successful separation and quantitative determination of analytes were achieved using a LiChrospher 60 RP-Select B (125 x 4 mm, 5 µm) analytical column maintained at 25 °C and UV detection at 220 nm. The mixture of acetonitrile/water (55/45, V/V) was used as a mobile phase, with flow rate of 1 mL/min. The proposed method was successfully applied for the determination of investigated pesticides in water samples.

Faculty of Agricultural Sciences and Food

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