Soylak Mustafa, Çoban Ayşe Nur, Ahmed Hassan Elzain Hassan
Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey; Technology Research & Application Center (ERU-TAUM), Erciyes University, 38039 Kayseri, Turkey; Turkish Academy of Sciences (TUBA), Cankaya, Ankara, Turkey.
Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey; Technology Research & Application Center (ERU-TAUM), Erciyes University, 38039 Kayseri, Turkey.
Food Chem. 2024 Jun 1;442:138426. doi: 10.1016/j.foodchem.2024.138426. Epub 2024 Jan 14.
This study focuses on the development and application of a novel nanocomposite (functionalized nanodiamonds@CuAlO@HKUST-1)-based µ-SPE method for the sensitive and selective extraction of Pb and Cd from food and water samples. The technique offers high sensitivity and selectivity, allowing accurate measurement of these metals at trace levels. The detection limit is 0.031 µg kg for Cd and 0.052 µg kg for Pb, with a relative standard deviation of 1.7 % for Cd and 4.8 % for Pb. The method was successfully applied to real samples and efficiently quantified Pb and Cd in food and natural water samples. The highest concentrations were found in red lentils (0.274 µg kg Pb) and fresh mint (0.197 µg kgCd), but still below recommended limits set by FAO/WHO (300 µg kg for Pb and 200 µg kg for Cd). It promises to ensure food safety, monitor environmental contamination, and informs regulatory decisions to protect public health.
本研究聚焦于一种新型纳米复合材料（功能化纳米金刚石@CuAlO@HKUST-1）基微固相萃取方法的开发与应用，用于从食品和水样中灵敏且选择性地萃取铅和镉。该技术具有高灵敏度和选择性，能够对痕量水平的这些金属进行准确测量。镉的检测限为0.031 μg/kg，铅的检测限为0.052 μg/kg，镉的相对标准偏差为1.7%，铅的相对标准偏差为4.8%。该方法成功应用于实际样品，有效地对食品和天然水样中的铅和镉进行了定量。在红扁豆（0.274 μg/kg铅）和新鲜薄荷（0.197 μg/kg镉）中发现了最高浓度，但仍低于粮农组织/世卫组织设定的推荐限值（铅为300 μg/kg，镉为200 μg/kg）。它有望确保食品安全、监测环境污染，并为保护公众健康的监管决策提供依据。
