Detection of Prohibited Fish Drugs Using Silver Nanowires as Substrate for Surface-Enhanced Raman Scattering.
Detection of Prohibited Fish Drugs Using Silver Nanowires as Substrate for Surface-Enhanced Raman Scattering.
复制标题
使用银纳米线作为表面增强拉曼散射基底检测违禁鱼药
DOI：
10.3390/nano6090175
复制
发表时间：
2016-09-21
期刊：
影响因子：
--
通讯作者：
Lai K
中科院分区：
文献类型：
--
作者：
Song J;Huang Y;Fan Y;Zhao Z;Yu W;Rasco BA;Lai K
表面增强拉曼散射或表面增强拉曼光谱（SERS）是一种很有前途的检测技术，受到越来越多的关注。采用快速多元醇法合成银纳米线，并在甘油体系中通过调整聚乙烯基吡罗烷酮和硝酸银的摩尔比来优化制备银纳米线。采用紫外可见光谱法、x射线衍射法和透射电子显微镜对银纳米线进行了表征。将优化后的银纳米线作为SERS底物用于检测鱼类违禁药物，包括孔雀石绿、结晶紫、呋喃唑酮和氯霉素。浓度低至0.01 ng/mL时，可以清晰地识别出结晶紫的SERS光谱。孔雀石绿的最低检测浓度为0.05 ng/mL，呋喃唑酮和氯霉素的最低检测浓度为0.1 μg/mL。结果表明，制备的银纳米线SERS衬底具有较高的灵敏度和活性。
Surface-enhanced Raman scattering or surface-enhanced Raman spectroscopy (SERS) is a promising detection technology, and has captured increasing attention. Silver nanowires were synthesized using a rapid polyol method and optimized through adjustment of the molar ratio of poly(vinyl pyrrolidone) and silver nitrate in a glycerol system. Ultraviolet-visible spectrometry, X-ray diffraction, and transmission electron microscopy were used to characterize the silver nanowires. The optimal silver nanowires were used as a SERS substrate to detect prohibited fish drugs, including malachite green, crystal violet, furazolidone, and chloramphenicol. The SERS spectra of crystal violet could be clearly identified at concentrations as low as 0.01 ng/mL. The minimum detectable concentration for malachite green was 0.05 ng/mL, and for both furazolidone and chloramphenicol were 0.1 μg/mL. The results showed that the as-prepared Ag nanowires SERS substrate exhibits high sensitivity and activity.