Determination of Aluminum in Dialysis Concentrates by Atomic Absorption Spectrometry after Coprecipitation with Lanthanum Phosphate
Determination of Aluminum in Dialysis Concentrates by Atomic Absorption Spectrometry after Coprecipitation with Lanthanum Phosphate
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DOI：
10.22037/ijpr.2017.2079
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
Emine Kılıçkaya Selvi;U. Şahin;S. Şahan
中科院分区：
文献类型：
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作者：
Emine Kılıçkaya Selvi;U. Şahin;S. Şahan
本方法用于透析浓缩液中微量铝（III）的测定，采用磷酸镧共沉淀后原子吸收光谱法。对影响共沉淀定量分析的分析参数进行了优化，包括镧的加入量、草酸的加入量、pH值和沉淀时间。分析物离子的%回收率在95- 105%范围内，检测限（3s）为0.5 µg l-1。发现预浓缩因子为1000，0.02 mg L-1模型溶液的相对标准偏差（RSD）%值为2.5%。用标准参考物质（CWW-TMD废水）评价方法的准确度。该方法也适用于大多数浓缩的酸性和碱性透析浓缩液，结果令人满意。
This method was developed for the determination of trace amounts of aluminum(III) in dialysis concentrates using atomic absorption spectrometry after coprecipitation with lanthanum phosphate. The analytical parameters that influenced the quantitative coprecipitation of analyte including amount of lanthanum, amount of phosfate, pH and duration time were optimized. The % recoveries of the analyte ion were in the range of 95-105 % with limit of detection (3s) of 0.5 µg l-1. Preconcentration factor was found as 1000 and Relative Standard Deviation (RSD) % value obtained from model solutions was 2.5% for 0.02 mg L-1. The accuracy of the method was evaluated with standard reference material (CWW-TMD Waste Water). The method was also applied to most concentrated acidic and basic dialysis concentrates with satisfactory results.