A new spectrophotometric method for the determination of verapamil is based on the charge transfer reaction with tetrachlorobenzoquinone inalkaline solution.
方法 ：利用克拉霉素与茜素在水 醇介质中发生电荷转移反应 ，形成电荷转移络合物 ，采用可见分光光度法测定 。
A new spectrophotometric method for the determination of trace nitrite was studied. The method is based on the diazo - reaction of methylene violet with nitrite in hydrochloric acid medium.
研究了在盐酸介质中微量亚硝酸根与亚甲紫发生的重氮化反应，建立了测定微量亚硝酸根的新方法。
Objective: to optimize the water extracting technology for Pingzhi capsule and establish a ultraviolet spectrophotometric method for the determination of total anthraquinones in Pingzhi capsule.
目的：优选平脂胶囊最佳水提工艺，建立其总蒽醌含量的紫外分光光度测定方法。
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