摘要
目的:建立自然铜中主元素的含量测定方法。方法:采用氯化亚锡-三氯化钛-重铬酸钾滴定法和火焰原子吸光度法。结果:两种方法含量测定结果有一定差别。结论:重铬酸钾法更简便、快捷,重复性好、回收率高,可较好地控制自然铜质量。
Objective: To establish main element content determination method of Pyritum. Methods: The two main methods are tin dichloride-titanium trichloride-potassium dichromate method and sampling-flame atomic absorption spectrometry method. Results: There are some differentiation between the results of two methods. Conclusion: The potassium dichromate method is convenient, accurate and reproducible. It can be applied for the quality conrol of Pyritum.
出处
《中国现代中药》
CAS
2014年第2期109-112,共4页
Modern Chinese Medicine
基金
国家科技支撑计划--矿物药中金属含量检测技术及中药中外源性有害残留物检测技术研究(2008BAI55B02)
关键词
自然铜
铁
重铬酸钾法
火焰原子吸收分光光度法
Pyritum
Iron
Potassium dichromate method
Flame atomic absorption spectrophotometry method