离子色谱法测定浓维磷糖浆中甘油磷酸根及磷酸根的含量

China Pharmacist(2018)

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Abstract
目的:建立抑制电导离子色谱法同时测定浓维磷糖浆中有效成分甘油磷酸根及磷酸根的含量.方法:采用AG19 -HC(50 mm×4 mm)保护住和IonPac AS18-HC(250 mm×4 mm)阴离子分析柱,以氢氧化钾溶液梯度淋洗,检测器为电导检测器,检测方式为抑制电导检测.结果:在该色谱条件下,甘油磷酸根峰与磷酸根峰均能有效分离,线性范围分别为1.054 ~84.35 μg·ml-1(r=0.9994)及0.3168~25.35 μg·ml-1(r=0.9998);平均回收率分别为99.35%(RSD=1.16%,n=9)和98.96%(RSD=2.61%,n=9).结论:本法简便,准确,专属性强,有助于更好地控制本品的质量.
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Key words
Ion chromatography,Gradient elution,Sodium glycerophosphate,Phosphate
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