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仪器网/ 行业应用/ 解决方案/ 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

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

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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 JASCO圆二色光谱仪CD J-1500
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