Akademik Veri Yönetim Sistemi
Journal of Food Composition and Analysis, cilt.144, 2025 (SCI-Expanded)
This work presents a novel microextraction method for ultra-trace analysis of selenium in various matrix samples. This method consists of air-assisted magnetic ionic liquid-based dispersive liquid liquid microextraction (AA-MIL-DLLME) coupled with hydride generation–atomic absorption spectroscopy. In order to increase the efficiency of the method, the selection of the appropriate solvent was aimed and five different types of magnetic ionic liquids were tested for this purpose. Since the highest Se(IV) recovery was obtained when using MIL-5 ([P66614+] [Co(II)(hfacac)3-]), MIL-5 was chosen as the appropriate extraction solvent. Important factors affecting the extraction were optimized. Accordingly, the relevant parameters and their optimum values are as follows; pH (5), volume of tannic acid (complexing agent) at a concentration of 3 × 10−3 mol L−1 (375 µL), volume of MIL-5 (750 µL). Furthermore, different mixing methods including vortex, hand shaking, air-assisted, sonication, microwave and orbital shaker were tested and the maximum extraction yield was obtained with air-assisted mixing. After the experimental studies, the analytical parameters of the developed method were evaluated. The method showed linearity in the concentration range 40–800 ng L−1. Furthermore, the limit of detection was calculated as 12.2 ng L−1 and the limit of quantification as 40 ng L−1.The percent recovery and relative standard deviation for 90 ng L−1 Se (IV) ion (N = 10) were 96 ± 3 and 1.1 %, respectively. The method was validated using multiple certified reference materials of tomato, flour, milk and tea and real samples including different types of tea, flour, rice, milk and vegetables. The green character of the method was assessed using AGREE software. The final results and analytical parameters of the method were compared with the already reported method in the literature.