化学
三乙醇胺
基质(水族馆)
检出限
选择性
硫代巴比妥酸
拉曼散射
试剂
线性范围
分析化学(期刊)
色谱法
拉曼光谱
催化作用
有机化学
抗氧化剂
光学
脂质过氧化
地质学
物理
海洋学
作者
Yanghe Luo,Qi Jing,Chongning Li,Zhiliang Jiang,Guiqing Wen,Xingcun He,Zhiliang Jiang
标识
DOI:10.1016/j.snb.2017.09.144
摘要
Gold nanosol with good stability and high SERS activity was prepared under the light wave irradiation, with triethanolamine as reducing agent. In the acid medium, the oxidized product of scorbic acid (SA) by H2O2, malondialdehyde, react with thiobarbituric acid (TBA) to produce 3,5,5-trimethyloxazole-2,4-dione (trimethadione, TMD) that exhibited strong surface-enhanced Raman scattering (SERS) effect at 1280 cm−1 in the as-prepared gold nanosol substrate containing enhancement reagent of AlCl3. Under the chosen conditions, the SERS intensity at 1280 cm−1was linear to the SA concentration in the linear range of 0.0066–1.59 μg/mL, with a detection limit of 3.2 ng/mL. This SERS method has been applied to the quantitative analysis of SA in real samples with advantages of high sensitivity, good selectivity and simple operation.
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