Yıldız Technical University, Department of Food Engineering, 34220 İstanbul, Turkiye.
Yıldız Technical University, Chemistry Department, 34220 İstanbul, Turkiye; İstanbul Health and Technology University, Department of Pharmacy, 34421 İstanbul, Turkiye.
Food Chem. 2024 Jul 30;447:139037. doi: 10.1016/j.foodchem.2024.139037. Epub 2024 Mar 20.
This study was aimed at developing a simple and efficient CoSn(OH) nanocubes-based preconcentration method for the preconcentration of copper ions from cinnamon extracts for determination by flame atomic absorption spectrometry. The cube-shaped sorbent was synthesized using the simple stoichiometric co-precipitation method under ambient conditions. Experimental factors of the method were evaluated with a comprehensive optimization approach to maximize the extraction efficiency for the analyte. Under the optimal conditions, the limit of detection (LOD), limit of quantitation (LOQ), and linear dynamic range were recorded as 0.98 µg/L, 3.28 µg/L, and 4.0-75 µg/L, respectively. The enhancement factor was calculated as 101.6-fold by comparing the LODs of the optimized and direct analysis systems. Percent recoveries were found to be within an acceptable range (77.6-115 %), with high repeatability using matrix matching calibration strategy. Results validated the proposed method as a highly efficient extraction approach for the monitoring of copper ions in herbal cinnamon extracts.
本研究旨在开发一种简单高效的 CoSn(OH)纳米立方体制备方法，用于从肉桂提取物中预浓缩铜离子，然后通过火焰原子吸收光谱法进行测定。该立方体形的吸附剂是在常温常压下通过简单的化学计量共沉淀法合成的。采用综合优化方法对方法的实验因素进行评价，以最大限度地提高分析物的萃取效率。在最佳条件下，检测限（LOD）、定量限（LOQ）和线性动态范围分别记录为 0.98µg/L、3.28µg/L 和 4.0-75µg/L。通过比较优化和直接分析系统的 LOD 值，计算出的增强因子为 101.6 倍。采用基质匹配校准策略，回收率在可接受范围内（77.6%-115%），重复性好。研究结果验证了该方法是一种高效的萃取方法，可用于监测草药肉桂提取物中的铜离子。
