
[物] 电子顺磁共振
Using PBN as spin trap matter, we stu***d the feasibility of detect organic peroxides by spin trapping and electron paramagnetic resonance technique.
以PBN为捕获剂,采用自旋捕获与电子顺磁共振技术研究测定有机*********物的可行性。
The basic principle, research object, method and applications of electron paramagnetic resonance in mensuration and analysis of antioxidation activity of plant were introduced in the paper.
该文简单介绍电子顺磁共振波谱法的基本原理、研究对象、方法及其在植物抗氧化活性检测分析中应用。
The decomposition mechanism of the potassium persulphate is deduced with these and electron paramagnetic resonance spectrum (EPR). Its action mechanism with size and fiber is also done respectively.
结合电子顺磁共振波谱(EPR)测定结果,推定出了************的分解反应机理以及分解产物与浆料及纤维作用的机理。
The results of electron paramagnetic resonance and selected dissolving experiments onsubmicro-gold in pyrite and arsenopyrite have been re-evaluated.
重新认以了含金黄铁矿、含金毒砂中次显微金的电子顺磁共振实验和溶解实验的结果。
The spectrum characteristics of quartz in some gold deposits in Middle Jiangxi province is stu***d by use of the electron paramagnetic resonance (EPR) and infrared spectrum .
本文借助电子顺磁共振、红外光谱等现代测试手段,对赣东地区若干金矿床(点)石英谱学特征进行了研究。
The structures of the samples were analyzed by X-ray diffraction, and the impedance spectra and electron paramagnetic resonance spectra were measured.
用X射线衍射仪检测了样品的结构,测量了样品的阻抗谱和电子顺磁共振谱。
Site-directed spin labeling(SDSL) combined with electron paramagnetic resonance(EPR) spectroscopy is a powerful tool for detecting structure of proteins.
位置定向的自旋标记(SDSL)技术结合电子顺磁共振(EPR)波谱技术成为检测蛋白质结构的有力工具。
The quartz is stu***d using an electron paramagnetic resonance (EPR), infrared spectrum (IR) and the electrical conductible degree of ore-bearing fluids.
借助于电子顺磁共振、成矿溶液电导度和红外光谱方法对刺猬沟金矿区石英进行了分析。
Their technique measures the warping of tooth enamel inflicted by radiation, detected in electron paramagnetic resonance.
他们使用电子顺磁共振测定了辐射对牙釉质的影响。
Longer distance constraints are determined by site-directed spin labelling electron paramagnetic resonance, but current labelling strategies still constitute some limitation.
直接位点标记的旋转电子顺磁共振可以得到更长的距离约束数据,但是目前的标记策略仍然具有局限性。
The defect properties in chemical vapor deposition diamond films doped by sulfur and boron were investigated by the Doppler broadening measurements and electron paramagnetic resonance (EPR).
利用多普勒增宽谱和电子顺磁共振研究了掺硼和掺硫金刚石薄膜的缺陷状态。
Recent research interests include application of electron paramagnetic resonance (EPR) sensor and oxygen sensing (oximetry) in vivo.
主要研究方向:电子顺磁共振传感器应用和生物活体在线测氧技术。
Methods Oxygen free radicals were measured directly in different stages of myocardial ischemia and reperfusion by electron paramagnetic resonance spectroscopy (ESR).
方法利用顺磁共振波谱仪直接测定心肌缺血再灌注的不同阶段氧自由基的产生。
The free radicals in kerogen of sedimentary organic matter can be easily determined by using the electron paramagnetic resonance(EPR) technique.
利用电子顺磁共振(EPR)技术可以简便地测定沉积有机质中干酪根的自由基。
Study of the optical spectra and the electron paramagnetic resonance(EPR) spectrum is an important method to study substance property.
光谱和电子顺磁共振谱的研究是研究物质性质的重要方法。
In this study, cryogenic electron paramagnetic resonance (EPR) and spin trapping techniques were used to detect the generation of reactive oxygen species (ROS) in stroke rat brain.
并首次直接测定了补阳还五汤对中风大鼠皮层及小脑的活性氧物质(ROS),包括************生成的影响。
The structures of the three compounds were characterized with X-ray diffraction, UV-vis spectroscopy, element analysis, and electron paramagnetic resonance spectroscopy.
应用X-射线单晶衍射、紫外光谱、元素分析和顺磁共振波谱等手段对化合物进行了表征。
电子顺磁共振(Electron Paramagnetic Resonance,简称EPR),也称为电子自旋共振(Electron Spin Resonance,ESR),是一种用于研究含有未成对电子物质的波谱技术。其核心原理基于顺磁性物质在磁场中吸收特定频率电磁波的现象,通过分析共振信号可获取物质结构、动力学及化学环境等信息。
共振条件满足公式:
$$
h u = gmu_B B
$$
其中,( h )为普朗克常数,( u )为电磁波频率,( g )为朗德因子,( mu_B )为玻尔磁子,( B )为外加磁场强度。
EPR技术广泛应用于:
电子顺磁共振(Electron Paramagnetic Resonance, EPR)是一种用于检测物质中未成对电子及其周围环境特性的磁共振技术,以下为详细解释:
EPR的全称是电子顺磁共振,也被称为电子自旋共振(ESR)。两者本质相同,均描述未成对电子在外磁场中的自旋能级跃迁现象。名称差异源于不同学科或地区的习惯(如物理学常用EPR,化学领域多用ESR)。
EPR谱仪主要包括辐射源、谐振腔、样品座、信号接收与记录系统等,通过分析吸收谱线的形状、强度及分裂模式获取样品信息。
EPR与ESR可互换使用,但需注意部分文献可能根据学科偏好选择其一。例如,苏联学者叶夫根尼·扎沃伊斯基在1944年发现该现象时称其为ESR。
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