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目的：研究复方氯化钠注射液中氯化钾含量的测定方法和定量分析氯化钾的测定条件。方法：在复方氯化钠注射液中氯化钾浓度分析是通过ＫＣｌ与ＮａＢ（Ｃ６Ｈ５）４反应生成ＫＢ（Ｃ６Ｈ５）４的反应实现的。用可见分光光度法测定产物四苯硼钾ＫＢ（Ｃ６Ｈ５）４溶胶含量。结果：在ｐＨ４５醋酸－醋酸钠溶液中测定四苯硼钾溶胶最大吸收在５２０ｎｍ波长。该方法的标准工作曲线线性范围０１６～１００μｇ／ｍｌ（Ｋ＋），回收率９９１％，变异系数小于２１％，用这种可见分光光度法和药典的重量法定量测定溶液中的氯化钾，两种方法测定ＫＣｌ含量没有显著差别（Ｐ＞００５）。结论：该方法是溶液中ＫＣｌ的间接测定法，并有较高的灵敏度、准确度和实用价值
Objective: To study the determination of potassium chloride content in compound sodium chloride injection and quantitative analysis of potassium chloride. Methods: The concentration of potassium chloride in compound sodium chloride injection was determined by the reaction of KCl with NaB (C6H5) 4 to form KB (C6H5) 4. The content of KB (C6H5) 4 sol was determined by visible spectrophotometry. Results: The maximum absorption of tetraphenylboron potassium sol was determined at 520 nm in pH45 acetic acid-sodium acetate solution. The standard working curve of this method has a linear range of 016 ~ 100 μg / ml (K +), the recovery rate is 991% and the coefficient of variation is less than 21%, which is determined by gravimetric spectrophotometry and pharmacopoeial method Solution of potassium chloride, KCl content of the two methods was no significant difference (P> 0 05). Conclusion: This method is an indirect assay of KCl in solution with high sensitivity, accuracy and practical value