| 浊点萃取-192紫外可见分光光度法测定痕量铝 |
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| 引用本文： | 荀春,李宗浩,杨亚玲.浊点萃取-192紫外可见分光光度法测定痕量铝[J].应用化工,2011,40(6). |
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| 作者姓名： | 荀春 李宗浩 杨亚玲 |
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| 作者单位： | 1. 云南盐化股份有限公司,云南昆明,650011
2. 昆明理工大学生命科学与技术学院,云南昆明,650224 |
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| 摘 要： | 研究了浊点萃取(CPE)-紫外可见分光光度法测定痕量铝离子的新方法,利用非离子表面活性剂Triton X-114对铝试剂与铝离子形成的络合物进行浊点萃取。探讨了影响浊点萃取及测定灵敏度的因素。在最佳条件下,铝离子的富集倍率为13.5倍,检出限为0.33μg/L,RSD为0.2%(n=6),铝离子含量在10~150μg/L范围内服从比尔定律。本法对实际样品中的铝进行富集和测定,结果令人满意。
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| 关 键 词： | 铝 铝试剂 Triton X-114 浊点萃取 紫外可见分光光度法 |
Cloud point extraction and ultraviolet-visible spectrophotometry used for determination of aluminum |
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| XUN Chun,LI Zong-hao,YANG Ya-ling.Cloud point extraction and ultraviolet-visible spectrophotometry used for determination of aluminum[J].Applied chemical industry,2011,40(6). |
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| Authors: | XUN Chun LI Zong-hao YANG Ya-ling |
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| Affiliation: | XUN Chun1,LI Zong-hao2,YANG Ya-ling2(1.Yunnan Salt and Chemical Industry Co.,Ltd.,Kunming 650011,China,2.College of Life Science and Technology,Kunming University of Science and Technology,Kunming 650224,China) |
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| Abstract: | A new method based on cloud point extraction(CPE) coupled with ultraviolet-visible spectrophotometry for separation and preconcentration of trace aluminum in soybean samples was proposed.Aluminum was complexed with aluminon in an acidic medium using Triton X-114 as non-ionic surface active agent quantitatively extracted into a small volume of the surfactant-rich phase by CPE.The chemical variables affecting CPE were investigated and optimized.Under the optimum conditions,the enrichment factor of aluminum wa... |
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| Keywords: | aluminum aluminon Triton X-114 CPE ultraviolet-visible spectrophotometry |
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