激光拉曼光谱对酱油中苯甲酸钠的检测研究

doi:10.14139/i.cnki.cn22-1228.2024.02.012

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摘要

采用表面增强的拉曼光谱，以银溶胶作为增强基底，对酱油中的苯甲酸钠进行了检测。首先，测试了柠檬酸钠制备的银溶胶剂量对拉曼光谱信号的影响；其次，通过比对标准苯甲酸钠与样品溶液添加银溶胶前后的拉曼特征光谱，确定了苯甲酸钠在 853 ｃｍ^-1、1017ｃｍ^-1和 1611 ｃｍ^-1的拉曼特征峰；最后，采集 12 种不同质量浓度的苯甲酸钠样品的拉曼光谱，利用一元线性回归方程建立了定量检测模型。本研究发现，拉曼光谱可以用来定量检测市场上销售的酱油中是否含有苯甲酸钠以及其浓度大小。

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	巫逸琦
	尤　杰
	孟红叶
	张　沙
	樊荣萍
	李英杰
	郇维亮
	史韡朝

关键词: 表面增强拉曼光谱苯甲酸钠银溶胶

Abstract:

Sodium benzoate in soy sauce was detected using surface-enhanced Raman spectroscopy ( SERS )and silver sol as the reinforcement substrate.In the first step,silver sols prepared with different concentrationsof sodium citrate were used to test the elfeet of their dose on SERS signal; In the second step, the Ramancharacteristic peaks of sodium benzoate at 848 cm~' ,1 012 em"' and 1 603 em"' were determined by comparingthe SERS spectra of the sodium benzoate standard and its solution and sample solution.In the last step, theSERS speetra of sodium benzoate samples in 12 different mass concentrations of soy sauce were collected ,andthe model established by univariate linear regression was analyzed.The results showed that SERS technologyusing silver colloidal as the substrate could be used for rapid quantitative detection of sodium benzoate eontent1n Soy SauCe.

Key words: surface-enhanced Raman spectroscopy sodium benzoate silver colloid

发布日期: 2024-04-25

ZTFLH:

O 437.3

引用本文:

巫逸琦, 尤　杰 , 孟红叶 , 张　沙 , 樊荣萍 , 李英杰 , 郇维亮 , 史韡朝 . 激光拉曼光谱对酱油中苯甲酸钠的检测研究 [J]. 大学物理实验, 2024, 37(2): 56-59.
WU Yiqi , YOU Jie, MENG Hongye, ZHANG Sha, PAN Rongping, LI Yingjie, HUAN Weiliang, SHl Weizhao. Identification of Sodium Benzoate in Soy Sauceby Laser Raman Spectroscopy . Physical Experiment of College, 2024, 37(2): 56-59.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/i.cnki.cn22-1228.2024.02.012 或 http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I2/56

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