| 丙醇-硫酸铵-1-（2-吡啶偶氮）-2-萘酚双水相萃取铅（Ⅱ） |
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| 引用本文： | 董红敏,沈亮亮,张树贵,陈腾,覃事栋. 丙醇-硫酸铵-1-（2-吡啶偶氮）-2-萘酚双水相萃取铅（Ⅱ）[J]. 光谱实验室, 2013, 0(6): 2979-2983 |
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| 作者姓名： | 董红敏 沈亮亮 张树贵 陈腾 覃事栋 |
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| 作者单位： | 吉首大学化学化工学院,湖南省吉首市人民南路120号416000 |
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| 基金项目： | 吉首大学校级科研项目资助（JGY201315） |
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| 摘 要： | 研究了丙醇-硫酸铵双水相体系中Pb（Ⅱ）的萃取行为.实验表明：铅-碘化钾-PAN形成的离子缔合物容易被萃取到丙醇相中,在pH 4.4且无PAN时,双水相体系对[PbI4]2-络阴离子的萃取率为0；加入PAN后,该体系几乎能完全萃取体系中的离子缔合物.该稳定缔合物的最大吸收波长为486nm,表观摩尔吸光系数为1.47×105L·mol-1·cm-1,相关系数r为0.9989,铅（Ⅱ）的质量浓度在0-1.4μtg/10mL呈线性关系.
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| 关 键 词： | 铅 双水相萃取 分光光度法 缔合物 |
Extraction of Lead by Propyl Alcohol-Ammonium Sulfate-PAN Aqueous Two-Phase |
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| DONG Hong-Min,SHEN Liang-Liang,ZHANG Shu-Gui,CHEN Teng,QIN Shi-Dong. Extraction of Lead by Propyl Alcohol-Ammonium Sulfate-PAN Aqueous Two-Phase[J]. Chinese Journal of Spectroscopy Laboratory, 2013, 0(6): 2979-2983 |
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| Authors: | DONG Hong-Min SHEN Liang-Liang ZHANG Shu-Gui CHEN Teng QIN Shi-Dong |
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| Affiliation: | (College Of Chemistry and Chentical Engbzeering, ,lishou, Hunan 416000, P. R. China ) |
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| Abstract: | The extraction behavior of Pb（ Ⅱ ） is studied in aqueous two-phase system of propyl alcohol-ammonium sulfate aqueous. Experiments showed .that the ion associated complex of lead-potassium iodide-PAN is extracted easily by propyl alcohol phase. The extractive rate of the [PbI4]^2- complex is zero in aqueous two-phase system without PAN at pH 4. 4, and the ion association was almost completely extracted at the PAN medium. The maximum absorption wavelength of the stable association complex is 486nm,and the apparent molar absorption coefficient is 1.47×105L·mol-1·cm^-1 and the correlation coefficient is 0. 9989. Ph（ Ⅱ ） has a linear relationship in the range of 0-1.4μg/10mL. |
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| Keywords: | Lead Aqueous Two-phase Extraction Spectrophotometry Association Complex |
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