conlife - ldh纳米花结合铋基层状钙钛矿氧化物（Bi₂MoO₆）用于涡旋辅助微固相萃取食品和水样中的铅

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-06-18 DOI:10.1016/j.foodchem.2025.145177

Mustafa Soylak , Fatma Oguz , Hassan Elzain Hassan Ahmed

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引用次数: 0

摘要

合成了一种新的CoNiFe-LDH NFs/Bi₂MoO₆纳米复合材料，对其进行了表征，并利用涡辅助微固相萃取（SPE）分离富集Pb（II）。纳米复合材料的高表面积和pH依赖电荷（PZC ≈ 6）通过静电相互作用实现了优异的吸附，在pH 8下实现了98% %的回收率。通过优化分析参数：吸附剂5 mg，样品体积20 mL， 2 mol L−1 HNO₃洗脱液1 mL，得到富集系数为20。VA-μSPE方法日内、日间rsd准确度高（分别为7.8 %和10.2 %），lod低（0.12 ~ 0.20 μg kg−1）。使用两种SRMs验证准确性，回收率为95-99 %，统计一致。通过使用GAPI和WAC进行可持续性评估，获得了低环境影响，优先考虑能源效率和减少试剂消耗。本研究提供了一种绿色、灵敏、准确的食品和水样中铅（II）分析方法。

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CoNiFe-LDH nanoflowers combined with bismuth-based layered perovskite oxide (Bi₂MoO₆) for vortex-assisted micro-solid phase extraction of lead from food and water samples

A new CoNiFe-LDH NFs/Bi₂MoO₆ nanocomposite was synthesized, characterized, and utilized to separate and enrich Pb(II) using vortex-assisted micro-solid phase extraction (SPE). The nanocomposite's high surface area and pH-dependent charge (PZC ≈ 6) enabled superior adsorption via electrostatic interactions, achieving >98 % recovery at pH 8. A preconcentration factor of 20 was obtained by optimizing the analytical parameters: 5 mg adsorbent, 20 mL sample volume, and 1 mL of 2 mol L⁻¹ HNO₃ eluent. The VA-μSPE method showed high accuracy for intra-day and inter-day RSDs (7.8 % and 10.2 %, respectively) and low LODs (0.12–0.20 μg kg⁻¹). Accuracy was validated using two SRMs with recoveries of 95–99 % and statistical agreement. Low environmental impact was obtained by sustainability evaluations using GAPI and WAC, which put a priority on energy efficiency and decreased reagent consumption. This study offers a green, sensitive, and accurate method for Pb(II) analysis in food and water samples.

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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.