摘要:
本文用高效液相色谱间接光度检测法测定了心脏停搏液中钠、钾、钙、镁的含量。以Soherisorb SCX为固定相,0.35mmol/L硫酸铈的[水-乙腈(85:15),并用磷酸调pH至3.2～3.4]溶液为流动相,亚铈离子作为流动相平衡离子直接应用光度检测器测定,并与其他测定方法比较。结果表明,分离度较好,104%>回收率>97%,线性关系良好。结果与滴定法相比无显著性差异。该法具有操作简便快速,灵敏准确,适于作为制剂中4种离子的常规检测方法。
关键词:
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心脏停搏液 /
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钠 /
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钾 /
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钙 /
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镁 /
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HPLC-IPD
Abstract:
To determine the content of sodium,kalium, magnesium and calcium in liquor of cardioplegia by HPLC-IPD method.METHOD: The chromatographic system consisted of Soherisorb SCX column and mobile phase of the solution of 0.35 mmol/L cerium sulphate in water-acetonitrile(85:15), that were regulated to pH 3.2～3.4 with phosphoric acid.Ceritnn was a balance-ion in mobile phase, therefore the content of sodium, kalium, magnesium and calcium were determined directly by photometer.The detected wave length was UV254 um.RESULTS:The mean recovery of 4 ion were between in 97～104% and deteCtion limits of sodium,kalium,magnesium and calcium were 5, 8, 5 and 4 ng.There was noremarkable betWeen in this HPLC-IPD method and titrative method.CONCLUSION: The method is constant, sensitive, have a concentration and is good for determination of sodium, kalium, magnesium and calcium concentration.
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