手持式拉曼光谱仪结合双金属Au@AgNPs聚集体检测环境水中结晶紫  

Detection of crystal violet in environmental water by a handheld Raman spectrometer combined with bimetallic Au@AgNPs aggregates

作　　者：董锦汝 冯紫临 沈雪怡 王文璇 王凯强 DONG Jinru;FENG Zilin;SHEN Xueyi;WANG Wenxuan;WANG Kaiqiang(College of Haide,Ocean University of China,Qingdao 266100,China;College of Food Science and Engineering,Ocean University of China,Qingdao 266404,China)

机构地区：[1]中国海洋大学海德学院,青岛266100 [2]中国海洋大学食品科学与工程学院,青岛266404

出　　处：《分析试验室》2024年第3期364-370,共7页Chinese Journal of Analysis Laboratory

基　　金：中央高校基本科研业务费(862101013148)项目资助。

摘　　要：构建了一种基于手持式拉曼光谱仪,结合双金属银包金粒子(Au@AgNPs)聚集体的现场快速检测结晶紫的表面增强拉曼光谱(SERS)方法。首先制备了“核-壳”粒径分别约为30 nm和6 nm的双金属银包金粒子(Au@AgNPs),并以NaCl作为聚集剂,获得了具有SERS活性的Au@AgNPs聚集体。结合激发光源785 nm的手持式拉曼光谱仪,实现了结晶紫的快速检测。以结晶紫位于1621 cm^(-1)处的特征峰进行定量分析,方法检出限为8.20μg/L,对河水和湖水中结晶紫的加标回收率为71.0%~128.4%。本文所构建的方法可用于监测结晶紫的非法使用。A surface-enhanced Raman spectroscopy(SERS)method for the rapid and in situ detection of crystal violet was developed based on a handheld Raman spectrometer combined with bimetallic silver coated gold particles(Au@AgNPs).Firstly,the Au@AgNPs with core and shell sizes of about 30 nm and 6 nm respectively were prepared.Sodium chloride was used as an inducer to prepare Au@AgNPs aggregate substrates with SERS activity.In combination with a handheld Raman spectrometer with an excitation source of 785 nm,the rapid detection of crystal violet was achieved.Quantitative analysis was conducted through the characteristic peak of crystal violet at 1621 cm^(-1)accompanied by the detection limit of 8.20μg/L and the recoveries of 71.0%-128.4%.The constructed SERS method can be applied to monitor the illegal use of crystal violet.

关 键 词：结晶紫 表面增强拉曼光谱 Au@AgNPs 环境水 手持拉曼光谱仪 

分 类 号：O657.31[理学—分析化学] X832[理学—化学]