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1.江苏大学 食品与生物工程学院,江苏 镇江 212013
2.华东理工大学 物理学院,上海 200237
郑开逸,博士,副研究员,研究方向:食品无损检测,E-mail:kaiyizhengjsu@126. com
张孟,博士,副教授,研究方向:分子模拟,E-mail:mzhang@ecust.edu.cn
收稿日期:2024-11-29,
修回日期:2025-01-08,
录用日期:2025-02-10,
纸质出版日期:2025-07-15
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赵丽娜,沈烨,商显文,陈智扬,石吉勇,郑开逸,孙正东,张孟.基于凹形金纳米箭头的苹果汁中福美胂的SERS检测[J].分析测试学报,2025,44(07):1346-1354.
ZHAO Li-na,SHEN Ye,SHANG Xian-wen,CHEN Zhi-yang,SHI Ji-yong,ZHENG Kai-yi,SUN Zheng-dong,ZHANG Meng.Detection of Asomate in Apple Juice Based on Surface Enhanced Raman Scattering Combined with AuCNAs[J].Journal of Instrumental Analysis,2025,44(07):1346-1354.
赵丽娜,沈烨,商显文,陈智扬,石吉勇,郑开逸,孙正东,张孟.基于凹形金纳米箭头的苹果汁中福美胂的SERS检测[J].分析测试学报,2025,44(07):1346-1354. DOI: 10.12452/j.fxcsxb.241129563.
ZHAO Li-na,SHEN Ye,SHANG Xian-wen,CHEN Zhi-yang,SHI Ji-yong,ZHENG Kai-yi,SUN Zheng-dong,ZHANG Meng.Detection of Asomate in Apple Juice Based on Surface Enhanced Raman Scattering Combined with AuCNAs[J].Journal of Instrumental Analysis,2025,44(07):1346-1354. DOI: 10.12452/j.fxcsxb.241129563.
该文提出了一种用凹形金纳米箭头(AuCNAs)作为表面增强拉曼光谱(SERS)基底,快速检测苹果汁中福美胂残留的方法。先用种子生成法制备金纳米棒(AuNRs),在AuNRs的基础上合成了AuCNAs,并对AuCNAs的各项指标进行了检测。结果表明,AuCNAs具有良好的稳定性、均匀性和重复性。其对福美胂的增强因子高达1.10×10
6
,与其他纳米球、纳米棒相比,AuCNAs具有更好的SERS增强性质。通过分子模拟,对福美胂进行峰位归属。利用特征峰1 382 cm
-1
处的强度与福美胂残留浓度建立校正曲线(
r
2
为0.992 7),得到福美胂的检出限(LOD)为8.93 nmol/L。回收实验显示苹果汁中福美胂的平均回收率为96.2%~109%,相对标准偏差为4.2%~8.8%。该实验表明AuCNAs作为SERS增强基底能够较好地检测苹果汁中的福美胂。
Surface enhanced Raman spectroscopy(SERS) is an analysis technique that improves Raman signals through rough metal nanoparticles,with the advantages of high sensitivity,strong specificity and simple operation. Therefore,this paper proposed a method to rapidly detect the residue of asomate in apple juice using concave Au nano-arrows(AuCNAs) as SERS substrate. The Au nanorods(AuNRs) were prepared based on seed-mediated growth strategy,and then used for the synthesis of AuCNAs. After that,the synthesized AuCNAs were analyzed to show good stability,homogeneity and repeatability. Meanwhile,the AuCNAs achieved high enhancement factor(1.10×10
6
). Compared to other nanospheres and nanorods,AuCNAs had significantly better SERS enhancement properties. The locations of SERS peaks can be attributed to the vibrations of chemical bonds through molecular simulation. The intensity at the Raman peak of 1 382 cm
-1
was used to establish a correction curve with the residual concentrations of asomate in apple juices,and the limit of detection(LOD) of asomate was 8.93 nmol/L. The recovery experiments showed that the average recoveries of asomate in apple juice was 96.2%-109% with relative standard deviations ranging of 4.2%-8.8%. The results indicated that AuCNAs can be used as SERS enhanced substrates to detect asomate in apple juice.
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