HPLC波长切换法同时测定小儿氨酚那敏片中对乙酰氨基酚和马来酸氯苯那敏的含量
陈蓉 , 周震宇 , 许奇 , 程继业
西北药学杂志 ›› 2024, Vol. 39 ›› Issue (2) : 32 -41.
HPLC波长切换法同时测定小儿氨酚那敏片中对乙酰氨基酚和马来酸氯苯那敏的含量
Simultaneous determination of acetaminophen and chlorphenamine maleate in Compound Paracetamol and Chlorphenamine Tablets for Infant by HPLC wavelength switching method
目的 建立同时测定小儿氨酚那敏片中对乙酰氨基酚和氯苯那敏含量的高效液相色谱法,为提高该药品的质量标准提供依据。 方法 用HPLC多波长切换法。色谱柱为Shim-pack VP-ODS(150 mm×4.6 mm,5 μm),流动相为0.025 mol·L-1磷酸盐缓冲液(pH 3.0)-甲醇乙腈(1∶1)溶液(梯度洗脱)。流速为1.0 mL·min-1。检测波长:310 nm(对乙酰氨基酚)、225 nm(氯苯那敏)。柱温为30 ℃。进样量为10 μL。 结果 对乙酰氨基酚与氯苯那敏的分离度良好,溶剂和辅料均不产生干扰。对乙酰氨基酚在0.58~1.73 mg·mL-1、氯苯那敏在2.50~7.49 μg·mL-1范围内与峰面积呈良好线性关系(r ≥ 0.999 7);精密度、重复性、稳定性(24 h)实验的RSD值均小于2.0% (n = 6);加样回收率分别为98.14%~101.74%、98.00%~101.54%,RSD值均小于2.0% (n = 9);耐用性考察符合要求。 结论 建立的HPLC多波长切换法操作简便、专属性强、稳定性好,可同时测定小儿氨酚那敏片中对乙酰氨基酚和氯苯那敏的含量。
Objective To establish an HPLC method for simultaneous determination of acetaminophen and chlorphenamine maleate in Compound Paracetamol and Chlorphenamine Tablets for Infant, to provide a reference to improve the quality standard of the preparation. Methods HPLC wavelength switching method was used. The analysis was performed on a Shim-pack VP-ODS column ( 150 mm × 4.6 mm, 5 μm ). The mobile phase was 0.025 mol·L-1 phosphate buffer (pH 3.0) - methanol acetonitrile (1∶1) in a linear gradient mode. The flow rate was 1.0 mL·min-1. The detection wavelengths were set at 310 nm for acetaminophen, 225 nm for chlorphenamine maleate. The column temperature was 30℃, and the injection volume was 10 μL. Results The separation of the 2 components was good. Solvents and excipients do not cause interference. Acetaminophen and chlorphenamine maleate were showed good linear relationships within the ranges of 0.58-1.73 mg·mL-1 and 2.50-7.49 μg·mL-1, respectively (r ≥ 0.999 7). The RSDs of precision, repeatability, and stability (24 hours) tests were all less than 2.0% ( n = 6 ). The average recoveries were within the ranges of 98.14%-101.74% and 98.00%-101.54%, respectively, and the RSDs were less than 2.0% (n = 9). Robust test of the method was passed. Conclusion This method is simple, specifical and stable, which can be used to simultaneously determine acetaminophen and chlorphenamine maleate in Compound Paracetamol and Chlorphenamine Tablets for Infant.
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