| 光谱学与光谱分析 |
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| Determination of Trace Calcium in Pearl Eye Drops By Coprecipitation Atomic Absorption Spectrophotometry |
| LIANG Ai-hui, JIANG Zhi-liang, WANG Xiu-li |
| Department of Materials and Chemical Engineering, Guilin University of Technology，Guilin 541004, China |
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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.
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Received: 2005-10-30
Accepted: 2006-02-17
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Corresponding Authors:
LIANG Ai-hui
E-mail: ahliang@glite.edu.cn
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| Cite this article: |
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LIANG Ai-hui,JIANG Zhi-liang,WANG Xiu-li. Determination of Trace Calcium in Pearl Eye Drops By Coprecipitation Atomic Absorption Spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 184-185.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I01/184 |
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