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
IntroductionGenerally, a sample for CD measurement needs to be in aliquid state to allow transmission measurement, more recentlythere has been increasing requirement for CD measurementof samples that are insoluble or may change structure insolution. These types of sample are best measured insolid state. Although CD measurement can be made intransmission for solid samples, there is a requirement forsample preparation such as making a pellet and if sampledilution is required, sample recovery can be difficult. As analternative, measurement using Diffuse Reflection (DR) CDis recommended. 1), 2) This application note illustrates theuse of DRCD measurement with the DRCD-575 diffusereflectance accessory (See Fig. 1.) optimized for the J-1500CD spectrometer with the multi-probe simultaneous CD/LDmeasurement.DRCD uses incident light to illuminate a solid sample and