本文介绍了使用开发的SFC方法尼古丁的异构体分析 关键词：烟草、尼古丁、SFC、快速LC、E-液体、对映体

关键词： HPLC, Chromatography, Amygdalin, Neoamygdalin, Cyanogenic Glycosides, Rosaceae, Seeds, Chiral, Epimer, Vitamin B17

在本研究中，基于CD光谱监测CBN结合DNA适体的结构变化。结构变化被评估为配体CBN、温度和其他类型的大麻素、大麻素二醇（CBD）和大麻素醇（CBG）的函数。CD光谱测量采用J-1500型CD光谱仪与HTCD Plus全自动CD测量装置相结合。该系统允许在一次运行中对多达192个样本进行自动CD光谱测量，使其非常适合于候选DNA适体的早期筛选。

本文介绍了用红外成像显微镜对微塑料进行颗粒分析的结果。 关键词：100-MT-0262，FTIR显微镜，微塑料，颗粒分析，颗粒分布，直方图

关键词：747022G, Antibody, IgG, Antibody Drug, Biopharmaceutical, Aggregate, TSKgel G3000SWXL, SEC, UV 检测器

本应用中描述了CD光谱法在高浓度抗体（未稀释）中的扩展应用，并报告了使用Spectra Manager Ver.2.5 CFR Bestsel对抗体药物进行详细二级结构评估的结果。

在本研究中，基于CD光谱监测CBN结合DNA适体的结构变化。结构变化被评估为配体CBN、温度和其他类型的大麻素、大麻素二醇（CBD）和大麻素醇（CBG）的函数。CD光谱测量采用J-1500 CD光谱仪与HTCD Plus自动CD测量装置相结合。该系统允许在一次运行中对多达192个样本进行自动CD光谱测量，使其非常适合于候选DNA适体的早期筛选。

Terpenes in essential oils are easily oxidized and can cause a decrease in the flavor in foods. Removal of Terpenes is commonly practiced in perfume industry to yield higher quality oils. Natural spearmint oilcontains l-limonene that is quite unlike d-limonene, the aroma is not reminiscent of citrus but of a light, clean Terpene hydrocarbon fragrance. Conventionally, Terpenes are removed using vacuum distillation. However, it is difficult to monitor the fractionation process in real-time during this process. We used SFC with a PDA detector and an FTIR spectrometer as a dual monitoring system to enable selective monitoring of the target compound Carvone in real time during elution and fractionation. The PDA provides broad information on the separation, but cannot differentiate between limonene and Carvone.

It is generally understood that chiral compounds have different bioactivities depending upon the absolute configuration of each compound. Some familiar examples include glutamic acid and thalidomide. Lglutamic acid demonstrates the “Umami” taste*1, while D-glutamic acid has a bitter taste, similarly, the R form of thalidomide is a sedative, but the S form has teratogenic activity. Thus, the separation and study of chiral compounds is critical for many reasons. The functionalities of chiral compounds have been studied for the development of advanced molecules for many applications. The study of chiral compounds has spread to several fields such as natural products, pharmaceuticals and other functional molecules, and it can be pointed out that among those studies, the structural analysis of chiral compounds is a very important topic. X-ray Diffraction (XRD), Nuclear Magnetic Resonance (NMR) and Electronic Circular Dichroism (ECD) using UV/Vis light are employed as primary methods for the structural analysis of chiral compounds. In this paper, the measurement of chiral compounds by Vibrational Circular Dichroism (VCD) using infrared light will be outlined. VCD is a method to measure the difference of absorbance intensity between left-hand and right-hand circularly polarized light as shown in Figure 1. It is an advantage of VCD that this method can be applied to almost all organic compounds in the same way as infrared (IR) spectroscopy. In addition, by comparing the measurement results with calculated results by ab-initio molecular orbital calculations, the absolute configuration of the sample can be determined. However, since the peak intensity of VCD spectra are 1,000 – 10,000 times weaker than that of standard IR spectra, spectroscopic instruments with high sensitivity and stability with very small baseline fluctuations are required. The FVS-6000 VCD system has a high sensitivity detector, suitable optical

Introduction Generally, a sample for CD measurement needs to be in a liquid state to allow transmission measurement, more recently there has been increasing requirement for CD measurement of samples that are insoluble or may change structure in solution. These types of sample are best measured in solid state. Although CD measurement can be made in transmission for solid samples, there is a requirement for sample preparation; such as making a pellet and if sample dilution is required, sample recovery can be difficult. As an alternative, measurement using Diffuse Reflection (DR) CD is recommended. 1), 2) This application note illustrates the use of DRCD measurement with the DRCD-575 diffuse reflectance accessory (See Fig. 1.) optimized for the J-1500 CD spectrometer with the multi-probe simultaneous CD/LD measurement. DRCD uses incident light to illuminate a solid sample and

关键词：蛋白质二级结构，FTIR，transmission cell，SSE测定，酰胺带，α-螺旋，beta sheet, beta turn，溶菌酶，血细胞凝集素

红外定量分析是分析实验室的日常需求。虽然液体溶液是一种常见的样品，但也存在粉状成分的混合物，通常希望获得不溶解到溶剂中的定量结果。本文概述了两种粉状混合物的定量分析方法的发展。

利用红外光谱，通过在光路中放置偏振器测量样品的偏振特性来评估取向。已经开发了一种偏振ATR配件，可以基于ATR效应测量样品偏振，并可以分析1-2µm范围内样品表面的分子取向。该技术允许分析样品表面的分子取向，而不考虑样品厚度或材料。

本文研究了使用成像来研究氰基丙烯酸酯粘合剂固化过程中的反应过程。

本应用说明提供了IRT-5000/7000系列FT/IR显微镜新开发的微成像分析程序中使用“MCR模型分析”进行成像数据分析的示例（如图2所示）。MCR模型分析是微成像分析程序中的一个辅助分析功能，它可以在不验证矩阵中每个光谱的情况下创建样本图像。关键词：FTIR，FTIR显微镜，FTIR成像化学成像，红外成像，主成分分析，IRT-5100，IRT-7100，IRT-7200杂质分析，聚酯，聚乙烯，蛋白质，聚氯乙烯，多元回归

IQ Mapping是一种适用于ATR、透射率和反射率的技术，可以通过在表面上精确控制光栅化IR光，使用手动平台绘制区域。

本文介绍了偏振调制红外反射吸收光谱（PM-IRRAS）的概况、系统以及薄膜测量的样品数据。利用薄膜的先进功能，如电、光学和/或机械性能的几种工业产品现在变得越来越流行，薄膜的制造和评估技术也得到了稳步改进。众所周知，红外光谱是对这些类型的薄膜最有用的评估方法之一，它提供了关于分子结构和取向以及光学厚度和电学性质的信息。红外反射吸收光谱（IRRAS）可用于厚度在几十埃范围内的金属衬底上的非常薄的薄膜的分子结构分析。然而，由于一些需要更高性能和更高功能的新型器件的开发，人们越来越需要更高灵敏度的测量和薄膜生成的过程监控。为了满足这一要求，JASCO开发了一种使用偏振调制红外反射吸收光谱（PM-IRRAS）的真空室内薄膜生成监测系统，其灵敏度高于普通IRRAS。

IRT-1000是一款真正的FTIR显微镜配件。显微镜能够很容易地设置在仪器样品室中，无需对准，可以使用标准DTGS检测器或液氮冷却的MCT检测器。IRT-1000能够收集许多不同类型样品的透射率、反射率或ATR光谱，提供了一系列性能不受影响的功能。

JASCO开发的用于宏观测量的掠角附件。 卡塞格伦物镜

在本申请说明中，使用快速扫描测量了油和应用于ATR棱镜表面的表面活性剂之间的反应过程。

FTIR提供了的三种时间历程测量方法：间隔测量、快速扫描和步进扫描测量

在本申请说明中，使用IMV-4000对污染树脂样品的异物进行IR图谱绘制 关键词：MCT检测器，线性阵列，多个组件和IMV-4000

本申请说明旨在与传统的湿化学方法相比，使用专用的FT-NIR（傅立叶变换近红外光谱仪）评估碘值的测量精度。 关键词：碘，不饱和脂肪，FT-NIR，ASTM D5554，partial least squares，化学计量学

本应用说明显示了使用ATR PRO ONE VIEW分析异物的示例。 关键词：ATR，异物，FTIR，纤维素，纸张分析，聚酯，图像分析

本应用中介绍了3中测量模式可供选择用于增强观察，每种模式都可以根据被分析样品的性质提供对样品的改进查看。

本申请说明提供了受控邻苯二甲酸酯的详细评估程序。

傅立叶变换红外光谱法是一种快速、准确地测定液体中乙醇浓度的分析技术。本申请说明报告了三种市售乙醇基防腐剂和一种可用于手部消毒的饮料级酒精中乙醇浓度的分析结果。 关键词：洗手液，Covid，乙醇，防腐剂，FTIR，IR定量

关键词：手性HPLC探测器，圆二色性探测器，商用偏振计比较，ORD

在本申请说明中，使用新定义的SPE-HPLC方法分析了非离子表面活性剂，结果报告如下。 关键词：SPE-HPLC，非离子表面活性剂，庚氧基乙烯十二烷基醚，5µm，C18柱

关键词胆汁酸，NAD，NADH，Enzymepak 3a-HSD，Bilepak-II，荧光检测器