珍珠明目滴眼液中微量钙的共沉淀分离原子吸收光谱分析

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摘要：采用硝酸锶-碳酸钾共沉淀分离富集珍珠明目滴眼液中的微量钙，用原子吸收分光光度法测定其含量。进样溶液钙浓度在0.0～20.0μg·mL^-1范围内与其422.7 nm处的吸光度成良好线性关系，检出限为0.06 μg·mL^-1。该法用于珍珠明目滴眼液中钙的测定，具有灵敏、简便、快速、准确、重复性好，平均回收率为97.0%～98.3%，相对标准偏差RSD为0.4%。

关键词：钙;共沉淀;原子吸收分光光度法;珍珠明目滴眼液

Abstract：The trace calcium in pearl eye drops was analyzed by atomic absorption spectrophotometry after the SrNO₃-K₂CO₃ coprecipitation. The absorbance at 422.7 nm is linear with the calcium concentration in the range of 0.0-20.0 μg·mL^-1. The detection limit is 0.06 μg·mL^-1 Ca. A new atomic absorption spectrophotometric method was proposed for the determination of calcium in pearl eye drops, with some advantages including high sensitivity, simplicity, rapidity and accuracy. The recovery is in the range of 97.0%-98.3%(n=5). The RSD is 0.4%. It proved a good method for the determination of calcium in pearl eye drops.

Key words：Calcium;Coprecipitation;Atomic absorption spectrophotometry;Pearl eye drops

收稿日期: 2005-10-30 修订日期: 2006-02-17

中图分类号:

O657.3

通讯作者: 梁爱惠 E-mail: ahliang@glite.edu.cn

引用本文:

梁爱惠, 蒋治良,王秀丽. 珍珠明目滴眼液中微量钙的共沉淀分离原子吸收光谱分析[J]. 光谱学与光谱分析, 2007, 27(01): 184-185.
LIANG Ai-hui, JIANG Zhi-liang, WANG Xiu-li. Determination of Trace Calcium in Pearl Eye Drops By Coprecipitation Atomic Absorption Spectrophotometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 184-185.

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https://www.gpxygpfx.com/CN/Y2007/V27/I01/184