【摘 要】
：
A simple and facile gas chromatography-mass spectrometer (GC-MS) fingerprint of Su-He-Xiang-Wan (SHXW) was developed, the similarity analysis was conducted, and attribution of the major characteristic
【机 构】
：
Research Center of Modemization of Chinese Herbal Medicine, College of Chemistry and Chemical Engine
【出 处】
：
第八届全国青年岩土力学与工程会议暨青年华人岩土工程论坛
论文部分内容阅读
A simple and facile gas chromatography-mass spectrometer (GC-MS) fingerprint of Su-He-Xiang-Wan (SHXW) was developed, the similarity analysis was conducted, and attribution of the major characteristic peaks was identified for SHXW quality control.GC-MS analysis was performed on a QP2010 instrument (Shimadzu, Japan) equipped with a capillary column of RTX-5MS.The column temperature was initiated at 50 ℃, held for 5 min, increased at the rate of 3 ℃/min to 120 ℃, held for 2 min, and then increased at the rate of 4 ℃/min to 220 ℃, held for 10 min.Helium carrier gas was used at a constant flow rate of 1.3 mL/min.Mass conditions were ionization voltage, 70 eV; injector temperature, 250 ℃; ion source temperature, 250 ℃; splitting ratio, 30:1; full scan mode in the 40-500 Da mass ranges with rate of 0.2 s per scan.Attribution of the major characteristic peaks was identified for SHXW by comparing the chemical standards, references of Chinese herbal medicines and the negative controls of prescription samples (NC) of SHXW.With the help of the temperature-programmed retention indices (PTRIs) used together with mass spectra and chemical standards, 25 major characteristic peaks have been identified.Nine volatile medicinal materials were identified in the prescription of SHXW by attributing to the 27 major characteristic peaks.The results demonstrate that the proposed method is a powerful approach to quality control of complex herbal medicines.
其他文献
在分析长玻纤增强聚丙烯热塑性复合材料性能和复合材料塑性成形特点的基础上,对风能发电系统中的LGFRT叶片模具进行特殊设计,并对其性能进行测试.
在工业生产过程中,不同状态之间进行切换都会带来干扰,影响产品的质量,本文以化工过程中常见的加热炉出口温度控制为例,讨论了集散控制系统对优化工艺运行,提高产品质量发挥的作用,并通过实验对控制技术的效果进行了测试.
Based on the traditional active steering system, a novel active steering system integrated with electric power steering function was introduced, which can achieve the functions of both active steering
本文利用三轴试验土样全表面数字图像测量系统,以硅微粉为研究对象,进行了不同密度不同围压下的剪切试验研究.通过对采集到的试样不同侧面的三幅图像的原始数据进行畸变修正、像素当量归一化、数据筛选、曲面展开、应变计算和数据拼接,得到试样全表面变形和应变分布.由实测的试样的弹性模量和表面每一点的应变,得到各点的应力;再根据应力水平判断试样表面的点是否发生剪切破坏.在应力水平等值线上,把S=l最早出现的时刻看
Indirect extrusion of Mg-l0%Sn (mass fraction) alloys was performed at three different working temperatures.The effect of working temperature on the microstructure, texture and tensile properties of t
To avoid the machine problems of excessive axial force, complex process flow and frequent tool changing during robotic drilling holes, a new hole-making technology (i.e., helical milling hole) was int
In order to identify the critical properties and failure criteria of in-situ silt under vehicle or wave loading, anisotropically consolidated silt under undrained cyclic principal stress rotation was
In order to solve discrete multi-objective optimization problems, a non-dominated sorting quantum particle swarm optimization (NSQPSO) based on non-dominated sorting and quantum particle swarm optimiz
Globally exponential stability (which implies convergence and uniqueness) of their classical iterative algorithm is established using methods of heat equations and energy integral after embedding the
The effect of two alkylpyridinium ionic liquids (py-iLs) including N-butylpyridinium hydrogen sulfate (BpyHSO4) and N-hexylpyridinium hydrogen sulfate (HpyHSO4) on the kinetics of copper electrodeposi