CD的同时多探头SMP测量和使用积分球测量丙氨酸粉末样品

2015/09/25   下载量： 6 次

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应用领域 生物产业
检测样本 其他
检测项目
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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

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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


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