| 非共价作用双水相萃取分光光度法测定镧 |
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| 引用本文： | 刘玉玲,卓馨,王聪.非共价作用双水相萃取分光光度法测定镧[J].光谱实验室,2012,29(1):236-239. |
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| 作者姓名： | 刘玉玲 卓馨 王聪 |
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| 作者单位： | 自旋电子与纳米材料安徽省重点实验室培育基地 234000 |
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| 基金项目： | 安徽省自然科学基金，安徽省教育厅自然科学项目，宿州学院教授(博士)科研启动基金，宿州学院科研平台开放课题 |
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| 摘 要： | 研究了稀土金属La（Ⅲ）的在聚乙二醇2000（PEG）-硫酸铵（NH4）2SO4]-甲基红（MR）双水相体系中,用甲基红作萃取剂和显色剂的液-液萃取行为。实验表明将DP-La（Ⅲ）配合物从pH 3.5的溶液中萃取到PEG相,其最大吸收波长位于545nm,ε=2.23×105L·mol-1·cm-1。La（Ⅲ）的线性范围为0—0.8μg·mL-1,La（Ⅲ）与MR的配合比为1:2。该方法对共存离子的抗干扰能力较强。
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| 关 键 词： | 镧 甲基红 萃取分光光度法 非有机溶剂 聚乙二醇 |
Determination of Lanthanum in Dual-Aquation Phase with Non-Covalent Interaction by Extraction-Spectrophotometry |
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| LIU Yu-Ling
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ZHUO Xin
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WANG Cong.Determination of Lanthanum in Dual-Aquation Phase with Non-Covalent Interaction by Extraction-Spectrophotometry[J].Chinese Journal of Spectroscopy Laboratory,2012,29(1):236-239. |
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| Authors: | LIU Yu-Ling ZHUO Xin WANG Cong |
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| Institution: | [Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base),Suzhou,Anhui 234000,P.R.China] |
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| Abstract: | The La（Ⅲ） in dual-aquation phase system of polyethylene glycol （PEG）-（Na2SO-4）-methyl red（MR） was extracted using methyl red as extractant and color agent. The complex was extracted by PEG phase from the water solution of pH = 3.5.The maximum absorption of the complex was at 545nm and the molar absorption coeffcient（e） was 2.23×105L · mol-1 · cm-1,the linear range was 0—0.8μg·mL-1.The La（Ⅲ） and catechol violet form a stable complex with a malar ratio of 1:2.The antijamming capability of this method to coexistence ion was strong. |
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| Keywords: | Lanthanum Methyl Red(MR ) Extraction-Spectrophotometry Non-Organic Solvent Polyethylene Glyeol(PEG) |
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