论文部分内容阅读
目的 :鉴别临床应用的一种可疑“青黛”的真伪。方法 :采用显微、薄层层析、吸收光谱及理化鉴别法对其性状、显微及理化特性进行鉴别并与真品比较。结果 :“青黛”从外形、颜色及一般化学性质上与真品不同 ;薄层层析按药典规定方法 ,“青黛”无斑点 ;吸收光谱鉴别真品在 60 8nm有一最大吸收峰 ,伪品在 4 0 0～ 80 0nm之间无吸收峰。进一步鉴别伪品中主要含有Fe2 S3、FeS等对人体有害的掺假成分。结论 :“青黛”为一种伪品 ,本法为青黛的真伪鉴别提供了依据。
Purpose: To identify the authenticity of a suspected “cyan” in clinical application. Methods : Microscopic, thin layer chromatography, absorption spectroscopy and physicochemical discrimination were used to identify the traits, microscopic and physicochemical properties and compare with the authentic product. Results: “Qingyu” differs from the authentic one in terms of appearance, color, and general chemical properties; TLC is based on the method prescribed in the Pharmacopoeia; “Green Barley” has no spots; the absorption spectrum discriminating authenticity has a maximum absorption peak at 60 8 nm, and the counterfeit goods are at 40. There is no absorption peak between 0 and 80 nm. Further identification of adulterants containing Fe2 S3, FeS and other harmful adulterants. Conclusion: “Qingyu” is a kind of counterfeit product. This law provides the basis for authenticity identification of Qingdai.