Micro solid phase extraction of lead and cadmium using functionalized nanodiamonds@CuAl2O4@HKUST-1 nanocomposite for FAAS analysis in food and water samples

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2024-01-14 DOI:10.1016/j.foodchem.2024.138426

Mustafa Soylak , Ayşe Nur Çoban , Hassan Elzain Hassan Ahmed

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引用次数: 0

Abstract

This study focuses on the development and application of a novel nanocomposite (functionalized nanodiamonds@CuAl₂O₄@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⁻¹ for Cd and 0.052 µg kg⁻¹ 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⁻¹ Pb) and fresh mint (0.197 µg kg⁻¹Cd), but still below recommended limits set by FAO/WHO (300 µg kg⁻¹ for Pb and 200 µg kg⁻¹ for Cd). It promises to ensure food safety, monitor environmental contamination, and informs regulatory decisions to protect public health.

Abstract Image

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使用功能化纳米金刚石@CuAl2O4@HKUST-1 纳米复合材料进行微固相萃取，分析食品和水样品中的铅和镉的 FAAS 含量

本研究的重点是开发和应用一种基于新型纳米复合材料（功能化纳米金刚石@CuAl2O4@HKUST-1）的 µ-SPE 方法，用于灵敏、选择性地萃取食品和水样中的铅和镉。该技术具有高灵敏度和高选择性，可精确测量这些金属的痕量水平。镉和铅的检测限分别为 0.031 微克/千克和 0.052 微克/千克，相对标准偏差分别为 1.7%和 4.8%。该方法成功地应用于实际样品，有效地定量了食品和天然水样中的铅和镉。最高浓度出现在红扁豆（0.274 微克/千克-1 铅）和新鲜薄荷（0.197 微克/千克-1 镉）中，但仍低于粮农组织/世卫组织的建议限值（300 微克/千克-1 铅和 200 微克/千克-1 镉）。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信息。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.