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枸橼酸钾是用于低血钾症和钾缺乏症及碱化尿液的药物,是一种常用的医院制剂,其原料含量测定药典采用非水滴定法,还有采用离子交换树脂法者,但这些方法均比较繁琐费时,为了克服这些缺点,我们采用pH指示剂吸收度比值法测其含量,具有准确,无毒的优点,并适合医院的快速分析。一、仪器与试剂 751G分光光度计(上海分析仪器厂),25型酸度计(上海甘泉五金厂),磷酸二氢钾缓
Potassium citrate is used for hypokalemia and potassium deficiency and alkalinization of urine drugs, is a commonly used hospital preparations, the determination of the raw material content Pharmacopoeia using non-aqueous titration method, as well as the use of ion exchange resin method, However, these methods are relatively tedious and time-consuming. In order to overcome these shortcomings, we use the ratio of the absorbance of pH indicator to determine the content, which has the advantages of accuracy and non-toxicity and is suitable for rapid analysis in hospitals. First, instruments and reagents 751G spectrophotometer (Shanghai Analytical Instrument Factory), 25 acidity meter (Shanghai Oasis Hardware Factory), potassium dihydrogen phosphate slow