目的 建立復(fù)方電解質(zhì)注射液中鈉、鉀、鎂離子的定量測定方法。方法 采用原子分光光度法，鈉、鉀離子以氯化銫為掩蔽劑，鎂離子以氧化鑭為掩蔽劑，鈉、鉀、鎂3種離子分別于589、766.5、285.2 nm處進(jìn)行測定。結(jié)果 鈉、鉀、鎂3種離子線性關(guān)系良好。平均回收率分別為99.8%、100.7%、99.4%。結(jié)論 本方法簡便、快捷、準(zhǔn)確，可用于復(fù)方電解質(zhì)注射液中鈉、鉀、鎂離子的定量測定。

Objective To establish a determination method for sodium, potassium, and magnesium ions in multiple electrolytes injection. Methods Sodium, potassium, and magnesium ions were determined at 589, 766.5, and 285.2 nm using agent caesium chloride and lanthanum oxide as masking agents by flame atomic absorption spectrometry. Results The linear of sodium, potassium, and magnesium were good. The average recovery rates of them were 99.8%, 100.7%, and 99.4%. Conclusion The method is simple, rapid, and accurate, which could meet the requirements for the determination of sodium, potassium, and magnesium ions in multiple electrolytes injection.