ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

To improve the repeatability of surface enhanced Raman spectroscopy (SERS) and ensure the homogeneity of the mixed adsorption of surface enhanced metal nanoparticles and analytes, a hardware system for automatic mixing control of surface enhancer and micro liquid samples was developed to ensure the uniform mixing effect of each sample with the surface enhancer based on the self-built laboratory Raman point detection device. At the same time, the real-time control analysis software was compiled with G language to implement one-button operations of automatic mixing and sampling of trace liquid samples and surface enhancers, spectrum acquisition and data processing by the NI LabVIEW software development tool. Finally, the stability of Raman detection system with automatic mixing of surface enhancers and micro liquid samples was verified by testing nitrofurantoin veterinary drug residues in commercially available honey. Compared with Raman point detection system, the Raman spectrum detection system for automatic mixing of surface enhancer and micro liquid sample exhibited a more satisfactory result that the lowest variation coefficients of Raman characteristic peaks for nitrofurantoin and sulfamethoxypyridazine were 0.0322 and 0.0361, respectively. In addition, the linear regression models of nitrofurantoin and sulfamethoxypyridazine in honey were established. The optimal validation set determination coefficients were 0.9619 and 0.9790, and the root mean square errors were 0.6723mg/kg and 0.5186mg/kg, respectively. These findings demonstrated that the system studied could significantly enhance the stability of Raman spectra, and the obtained quantitative prediction models of veterinary drugs were accurate,，and it can offer technical support for the rapid quantitative detection of liquid samples by surface enhanced Raman spectroscopy.