基于XRD,NIR及拉曼光谱技术快速鉴别白矾、枯矾真伪

来源 :中国实验方剂学杂志 | 被引量 : 0次 | 上传用户:shi2007jie2008
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
目的:分析白矾、枯矾及其伪品的X射线衍射(X-ray diffraction,XRD),拉曼和近红外(Near Infrared,NIR)光谱特征与差异,建立快速鉴别白矾、枯矾和常见伪品的新方法。方法:从不同药材市场购得白矾9批,枯矾5批,自制枯矾2批。采集以上样品的XRD,NIR和拉曼光谱,归纳其光谱特征,分析光谱明显差异。结果:明矾和其伪品铵明矾的XRD,NIR及拉曼光谱具有明显差异。在XRD图谱中,铵明矾在2θ=14.56°处有1小峰,正品白矾没有此峰;在NIR光谱中,铵明矾在4 650 cm~(-1)处有1特征峰,而正品白矾无此峰;在拉曼光谱中,正品白矾在990 cm~(-1)处的最强峰发生分裂,974 cm~(-1)处产生1中等强度尖峰,而铵明矾无974 cm~(-1)峰,以上差异可用于二者快速鉴别。此外,正品枯矾XRD图谱具有9个明显特征峰(2θ=11.18°,21.88°,24.58°,31.42°,33.76°,38.25°,39.94°,50.24°,50.99°),NIR光谱在7 000 cm~(-1)和5 150 cm~(-1)处有2个较为平缓的吸收峰,可作为鉴别枯矾真伪的特征峰。结论:XRD,NIR和拉曼光谱特征可共同用于白矾、枯矾及其伪品的准确鉴别;NIR结合拉曼光谱技术能够为白矾及其炮制品的质控和快检提供快速准确的新方法。 OBJECTIVE: To analyze the characteristics and differences of X-ray diffraction (XRD), Raman and near infrared (NIR) spectrum of alum, alum and their counterfeit products and to establish a rapid identification of alum, alum and common pseudo New method of product. Methods: 9 batches of alum, 5 batches of alum, and 2 batches of self-made alum were purchased from different medicinal markets. The above samples were collected by XRD, NIR and Raman spectra, summarized the spectral characteristics, analysis of significant differences in spectra. Results: XRD, NIR and Raman spectra of alum and its counterfeit ammonium alum were significantly different. In the XRD pattern, ammonium alum has a small peak at 2θ = 14.56 °, which is absent from the genuine alum. In the NIR spectrum, the ammonium alum has a characteristic peak at 4 650 cm -1, whereas the authentic alum has no such peak In the Raman spectrum, the strongest peak of the genuine alum at 990 cm -1 was split, with a moderate intensity peak at 974 cm -1, while the ammonium alum had no peak at 974 cm -1 ) Peak, the above differences can be used for rapid identification of the two. In addition, the XRD patterns of the genuine product showed nine characteristic peaks (2θ = 11.18 °, 21.88 °, 24.58 °, 31.42 °, 33.76 °, 38.25 °, 39.94 °, 50.24 °, 50.99 °) There were two more gentle absorption peaks at ~ (-1) and 5 150 cm ~ (-1). Conclusion: The XRD, NIR and Raman spectra can be used for the accurate identification of alum, Alum and their counterfeit products. NIR combined with Raman spectroscopy can provide a fast and accurate new method for quality control and quick check of alum and its processed products method.
其他文献
4 发动机不易起动;起动后不易提速(发闷),汽车行驶无力;急加速时,化油器有时回火,甚至发动机易熄火;发动机温度较高此故障现象是由于混合气过稀或点火过迟所造成的。常见原
目的 研究热性惊厥患儿的复发危险因素及预后情况。方法 结合 98例热性惊厥患儿的临床及脑电图资料 ,研究其复发、转为癫疒间和出现智力障碍及行为异常的情况。结果 复发
Objective:To explore the genetic diversity and the modification of antibody response in the recent outbreak of Ebola Virus.Methods:Sequences retrieved from publ
守心一处,得自在逍遥,处阴阳二气之和谐。  守心一处,纵一蓑烟雨,享人间有味之清欢。  如庄周,如苏子。他们守住心中风景,退回内心,平静修行,无论浮世如何,我已自在悠然。人生如逆旅,我亦是行人。我们想登高山,涉远洋,看绝世美景,但请不要忘记,守住心中的风景。  守心中风景,是无论身处幽园或乱世,内心始终平静淡然。外界风景变换,或美丽壮观,或污浊混乱,不变的是内心美景。在喧嚣闹市,陶潜心中无车马喧嚣
我们于1989年在西乌旗抽样3所中学,2所小学共计1530名中小学生。其中蒙族学生758名、汉族学生772名;男728名,女802名。视力检测用E型对数(灯光)近视力表,用5分记录法,视力不
托车于乏术》1998年事n期——峪卜访弋,k广 划耙囊刮靶墩:H(嚣舞孑≮孽≤蟠嗣。一登吾咂长眠:H《霆赠诮蚕舞黜岳囊墩 《是嫌;丽L37一H畎巾一。^球豳匪莨匝畿甚齄求~匝避脚料蜊
期刊
角膜周期性灰白色全层混浊,临床上极为罕见,我院遇到一例,现报道如下: 黄某某,男,四个月。患儿出生后30天双眼角膜每七天中前五天角膜为灰白色混浊,第六、七两天透明,反复周
一、高中语文课堂教学中存在的问题1.师生课堂配合度低下课堂教学是否能达到希冀的效果,重点是要看师生能否促成高度的配合,学生要时刻紧跟教师的教学思维,不时的要给一些回
The kinetic model for a ternary system is introduced based on the microscopic diffusion form of the phase field equations for a binary alloy. The equation is s
点眼是眼科最常用的治疗方法之一,在多数情况下,绝大部分病人需自行点眼液进行治疗,但往往由于不掌握点眼方法,眼药水不能滴入结膜囊而达不到治疗目的,造成了浪费.为了解决