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治痫灵片是由六味中药和三味西药组成的复方片剂,其中苯巴比妥的含量测定,原标准是经氯仿提取后用分光光度法测定,操作繁杂费时,又浪费有机溶剂。经试验,用差示分光光度法,可不经提取,直接在紫外区测得苯巴比妥的含量。1 仪器与试药日立-330型紫外分光光度计。苯巴比妥:符合中国药典规定;治痫灵片:吉林省中医中药研究院药厂提供。2 吸收光谱的绘制及测定波长的选择
Treating Epilepsy tablets is a compound tablet consisting of Liuwei traditional Chinese medicines and Sanwei western medicines. The content of phenobarbital is determined by spectrophotometry after being extracted by chloroform. The operation is complicated and time-consuming, and the organic solvents are wasted. After testing, using differential spectrophotometry, without extraction, measured directly in the UV phenobarbital content. 1 instruments and reagents Hitachi-330 UV spectrophotometer. Phenobarbital: in line with the provisions of the Chinese Pharmacopoeia; governance Epilepsy tablets: Jilin Province Institute of Traditional Chinese Medicine Pharmaceutical Factory. 2 absorption spectrum of the drawing and determination of wavelength selection