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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Fluorescence sensing application of copper nanoclusters for $ Fe^{3+} $ detection in roasted chicken brine

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铜纳米团簇对烧鸡卤水中 $ Fe^{3+} $ 的荧光传感研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Aug.2024, Vol.47 No.8: 1112-1117

DOI: 10.3969/j.issn.1003-5060.2024.08.016

Authors

CAO Zheng, YU Fanfan, ZHAO Gan, XIANG Hui, YANG Lina, LIU Honglin

(School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China)

Abstract and Keywords

Abstract: Heavy metal contamination in food is an increasingly serious problem and poses a severe threat to people's lives. In this paper, a new type of copper nanoclusters(CuNCs) with red fluorescence was prepared by using 2-thiobarbituric acid(TBA) and glycine(Gly) as ligands. The cluster was used as a fluorescent probe with a minimum detection line of $ 3.78 \mu mol/L $ for $ Fe^{3+} $ concentration based on its excellent selectivity and resistance to interference from other ions. It was applied to the fluorescence detection of $ Fe^{3+} $ in roasted chicken brine by spiked recovery method, and its spiked recoveries were in the range of 93.5%-104.1% with relative standard deviation(RSD) of below 5.00%, indicating that the fluorescent probe has good prospects for the detection of $ Fe^{3+} $ in food.

Keywords: heavy metal contamination; copper nanoclusters(CuNCs); fluorescent probes; trivalent iron ions; fluorescence detection

作者信息

曹政，于烦烦，赵干，向晖，杨丽娜，刘洪林

（合肥工业大学食品与生物工程学院，安徽合肥230601）

摘要和关键词

摘要: 食品中的重金属污染问题日益严重，对人们的生活产生了严重威胁。文章以2-硫代巴比妥酸（TBA）和甘氨酸（Gly）为配体，制备一种新型的具有红色荧光的铜纳米团簇（CuNCs）。以该团簇作为荧光探针，在基于其优异的选择性及抗其他离子干扰能力的基础上，对三价铁离子 $ \left(\mathrm{Fe}^{3+}\right) $浓度的最低检出线为 $ 3.78\mu mol/L $。将加标回收法应用于烧鸡卤水中 $ Fe^{3+} $的荧光检测，其加标回收率在93.5%～104.1%之间，相对标准偏差（relative standard deviation，RSD）均低于5.00%，表明该荧光探针对食品中的 $ Fe^{3+} $具有良好的检测前景。

关键词: 重金属污染；铜纳米团簇（CuNCs）；荧光探针；三价铁离子；荧光检测

Funding

国家自然科学基金资助项目（21874034）

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