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Analysis of keto-enol tautomers of curcumin by liquid chromatography/mass spectrometry

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Chinese Chemical Letters 2013年第8期24卷 685-687页

作者： Shin-ichi Kawano Yusuke Inohana Yuki Hashi Jin-Ming Lin Department of Chemistry Beijing Key Laboratory of Microanalytical Methods and InstrumentationTsinghua University shimadzu Global COE for Application & Technical Development Shimadzu(China) Co.Ltd. Global Application Development Center Shimadzu Corporation Department of Chemistry Beijing Key Laboratory of Microanalytical Methods and Instrumentation.Tsinghua University

Keto-enol tautomers of curcumin were confirmed by reversed-phase liquid chromatography（RPLC）/ hybrid quadrupole ion trap/time-of-flight mass spectrometry（QIT/TOFMS）.Tautomers gave different MS/MS spectra in negative *** mass spectra were also obtained by hydrogen/deuterium exchange LC/MS/MS in positive *** results suggest that enol form is the major form in the solution（water/acetonitrile）.

关键词： Keto-enol tautomer Curcumin Liquid chromatography/mass spectrometry

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Rapid Determination of Residual Quinolones in Honey Samples by Fast HPLC with an On-Line Sample Pretreatment System

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American Journal of Analytical Chemistry 2011年第2期2卷 200-205页

作者： Wei Du JianGuo Yao YueQi Li Yuki Hashi shimadzu corporation Kyoto Japan shimadzu International Trading (Shanghai) Co. Limited Beijing China

A method of on-line pretreatment coupled to HPLC with fluorescence detection was developed and validated for the determination of nine quinolones in honey samples. This method simplified the complicated process of sample pretreatment and reduced sample treatment time. Recovery of the quinolones was between 92% - 101% for spiked honey samples. The limit of detection was 0.22 - 3.78 ng/mL (signal/noise ratio = 3). There was good linear correlation between HPLC peak area and concentration of the quinolones, with a linear range of 1.0 - 100.0 ng/mL and correlation coefficients >0.9997. The method proposed was validated for detecting quinolones in honey samples.

关键词： Antibiotics High Performance Liquid Chromatography (HPLC) Honey On-Line Pretreatment Quinolones

Development of Automatic Spectral line Selection

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Development of Automatic Spectral line Selection

Correlation between LIFG and Autonomic Activation during Stressful Tasks:A Functional Near-infrared Spectroscopy (fNIRS) Study

第三十五届国际光谱会议

作者： T.Masuda Y.Ohmori shimadzu corporation Kyoto 604-8511 Japan shimadzu corporation Kyoto 604-8511 Japan

＜正＞Because the spectral interference is a problem that cannot pass by avoiding it in the principle in the emission spectroscopy,the some solution is necessary.;①The high-

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2014年第5期34卷 663-671页

作者：史洁酒谷薰冈本雅子山口由衣左焕琮 Department of Neurology Yuquan HospitalTsinghua University School of Medicine Department of Neurosurgery Division of Optical Brain EngineeringNihon University School of Medicine Collaboration Promotion Department Shimadzu Corporation Department of Neurosurgery Yuquan HospitalTsinghua University School of Medicine

It remains unclear whether language tasks in one＇s first （L1） or second （L2） language can cause stress responses and whether frontal, autonomic and behavioral responses to stressful tasks are correlated. In this study, we studied 22 Chinese subjects whose L2 was English and measured the cerebral blood oxygenation in their frontal lobe by using functional near-infrared spectroscopy （fNIRS） as par- ticipants engaged in a mental arithmetic task （MAT） and verbal fluency tasks （VFTs） in L1 （Chinese） and L2 （English）. To examine the activated cortical areas, we estimated the channel location based on Montreal Neurological Institute （MNI） standard brain space by using a-probabilistic estimation method. We evaluated heart rate （HR） changes to analyze autonomic nervous system （ANS） functioning. We found that the MAT and VFTs induced greater increases in HR than did the control （Ctrl） task. Further- more, subjects developed greater increases in HR in the MAT and VFTt~ than they did in the VFTL1. Compared with the Ctrl task, the MAT and both VFTLland VFTL2 produced robust and widespread bi- lateral activation of the frontal cortex. Interestingly, partial correlation analysis indicated that the activity in the left inferior frontal gyrus （LIFG） [Brodmarm＇s area （BA） 47] was consistently correlated with the increases in HR across the three tasks （MAT, VFTL2, and VFTL1）, after controlling for the performance data. The present results suggested that a VFT in L2 may be more stressful than in L1. The LIFG may affect the activation of the sympathetic system induced by stressful tasks, includin~ MATs and VFTs.

关键词： functional near-infrared spectroscopy mental arithmetic task verbal fluency task auto-nomic nervous system inferior frontal gyrus

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用新的紫外可见UV—160型分光光度计改善定量分析

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光谱学与光谱分析 1985年第6期 63-64页

作者： Tatsumi Sato,Toshiaki Fukuma,0samu Ando,张桂兰 Analytical Instrument Division shimadzu corporation I Nishinokyo-Kuwabaracho Nakagyo-Ku Kyoto 604 Japan Analytical Instrument Division shimadzu corporation I Nishinokyo-Kuwabaracho Nakagyo-Ku Kyoto 604 Japan Analytical Instrument Division shimadzu corporation I Nishinokyo-Kuwabaracho Nakagyo-Ku Kyoto 604 Japan

由于用做定量测量的分光光度计的设计主要是用于常规分析,因此最重要的是要能容易和快速的测量样品。普通的分光光度计不能满足这些要求的,因为它没有快速的波长定位速度和足够高的定量功能。新发展的紫外可见UV-160型分光光度计,适用... 详细信息

由于用做定量测量的分光光度计的设计主要是用于常规分析,因此最重要的是要能容易和快速的测量样品。普通的分光光度计不能满足这些要求的,因为它没有快速的波长定位速度和足够高的定量功能。新发展的紫外可见UV-160型分光光度计,适用于这些测量。它是由一个单色仪,一个键盘,一个图示阴极射线管和一个绘图仪组成的。波长定位速度高达60nm/秒。测量吸光度光谱时,扫描速度可达40nm/秒。这些速度比普通分光光度计要快三倍多,而且能迅速地作多波长测量。

关键词：分光光度计光学式分析仪器紫外可见 UV 定量分析

High Resolution Scanning Probe Microscopy and its Application for Polymers

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High Resolution Scanning Probe Microscopy and its Applicatio...

2016年全国高分子材料科学与工程研讨会

作者： R.Kokawa JST/Advanced Measurement and Analysis（SENTAN） shimadzu corporation Japan

＜正＞*** Resolution Scanning Probe Microscopy The scanning probe microscopy is a powerful method for imaging topography of solids and also for observing material properties on *** on an industry-university cooperation,we have developed a frequency-modulation atomic force microscope（FM-AFM）compatible with advanced applications in viscous environments,as shown in *** atomic/molecular resolution was achieved even in liquids as shown with an example of ***（PE）molecules

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用离子交换树脂浓缩样品的非火焰原子吸收法

光谱学与光谱分析 1985年第6期 5-6页

作者： Yoshindo Funato ,Naomi Ito,Takuji Ui,胡媛昌 shimadzu corporation Toyohashi University of Technology

应用非火焰原子吸收分光光度法直接测定固体样品,目前仍处于研究阶段。但可预期的是,通过选择检测原子化器、石墨管、试样注入方法,加热器的温度控制等可将固体样品的测定付诸实施。在此期间,仪器分析中经常用于试样制备的离子搜集器,... 详细信息

应用非火焰原子吸收分光光度法直接测定固体样品,目前仍处于研究阶段。但可预期的是,通过选择检测原子化器、石墨管、试样注入方法,加热器的温度控制等可将固体样品的测定付诸实施。在此期间,仪器分析中经常用于试样制备的离子搜集器,诸如离子交换树脂、螯合树脂及其它固体收集器等也被用来测定被搜集在固体表面上的金属离子。因为注意到这点,我们已尝试了利用非火焰原子吸收光度法检测金属离子。

关键词：离子交换树脂整理剂金属离子阴阳离子

Co-Sense for BA LC/MS系统对血浆中药物的直接分析

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Co-Sense for BA LC/MS系统对血浆中药物的直接分析

第十五次全国色谱学术报告会

作者：宋苑苑 Hashi Yuki 吕冬 Masatoshi Takahashi Shin-ichi Kawano Keiko Yamabe Eiichi Yamamoto Naoki Asakawa 岛津国际贸易(上海)有限公司北京分析中心岛津国际贸易(上海)有限公司北京分析中心岛津国际贸易(上海)有限公司北京分析中心 shimadzu corporation Japan shimadzu corporation Japan shimadzu corporation Japan Eisai Co．Ltd． Japan Eisai Co．Ltd． Japan

＜正＞本文介绍采用Co-Sense for BA LC/MS系统对血浆中药物进行直接分析。该系统运用柱切换技术、含有稀释旁路与前处理柱的自动在线前处理系统以及MS检测器（电喷雾接口）。在药代动力学及代谢研究中需要对血清、血浆等生物样品中的... 详细信息

＜正＞本文介绍采用Co-Sense for BA LC/MS系统对血浆中药物进行直接分析。该系统运用柱切换技术、含有稀释旁路与前处理柱的自动在线前处理系统以及MS检测器（电喷雾接口）。在药代动力学及代谢研究中需要对血清、血浆等生物样品中的药物进行分析。为防止柱子的堵塞、劣化,在保护LC/MS接口的同时提高药物的回收率,分析前需要对生物样品进行除蛋白的处理。自动在线前处理系统Co-Sense for BA使用反相前处理柱（Shim-pack MAYI-ODS）和在线稀释旁路,可实现对血清、血浆等生物样品的直接进样分析。

关键词： Co-Sense-LC/MS 在线前处理系统药物分析

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稀土元素的ICP发射光谱分析

光谱学与光谱分析 1985年第6期 24-25页

作者： Tetuya Masuda,Yoshihisa omori,王芬蒂 Kyoto Analytical Applications Laboratory shimadzu corporation Kyoto Japan Kyoto Analytical Applications Laboratory shimadzu corporation Kyoto Japan

发射光谱法,特别是ICP激发光源,对于每种稀土元素来说都具有比其它分析方法要高的灵敏度。但每种稀土元素都有许多原子发射谱线,因此要用发射光谱法分析在其它稀上元素中的稀土元素也非常困难。在作这种分析时需采用高分辨率光谱仪。我... 详细信息

发射光谱法,特别是ICP激发光源,对于每种稀土元素来说都具有比其它分析方法要高的灵敏度。但每种稀土元素都有许多原子发射谱线,因此要用发射光谱法分析在其它稀上元素中的稀土元素也非常困难。在作这种分析时需采用高分辨率光谱仪。我们现在已研制了一种新仪器。该仪器有带个人计算机的高分辨率光谱仪并采用固态ICP激发光源。其技术参数为: 仪器: ICPS-1000V型色散部件装配方式: Czerny-Turner 焦距: 1.0m 光栅: 3600条/mm 倒线色散: 0.22nm/mm 射频发生器: 27.120MHz(固态) 用此仪器对混合金属进行了分析

关键词：稀土元素 ⅢB族元素痕量稀土 ICP