| 微乳液介质—雷氏盐浊度法测定汞的研究 |
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| 引用本文： | 杜斌 俞惟乐. 微乳液介质—雷氏盐浊度法测定汞的研究[J]. 分析测试学报, 1997, 16(6): 33-36 |
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| 作者姓名： | 杜斌 俞惟乐 |
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| 作者单位： | 山东建材学院应化系!济南250022(杜斌，魏琴，赵侠)，中国科学院兰州化学物理研究所!兰州730000(俞惟乐，欧庆瑜) |
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| 基金项目： | 山东大学胶体与界面化学国家教委开放实验室的资助 |
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| 摘 要： | 研究了以乳化剂ＯＰ／正丁醇／正庚烷／水微乳液为介质，雷氏盐浊度法测定汞。微乳液的引入，使沉淀颗 粒分散均匀，体系稳定性显著提高，分析条件得到改善，体系可稳定１１ｈ。以４００ｕｍ为测定波长，汞量在０．０４～２．４ ｍｇ／Ｌ范围内线性关系良好。对痕量汞的测定可采用巯基葡聚糖凝胶（ＳＤＧ）进行分离富集，提高了测定的选择性和 灵敏度，用于实际样品测定，结果令人满意。
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| 关 键 词： | 汞 微乳液 雷氏盐 浊度法 |
Nephelometric Determination of Mercury as Its Reinecke Salt in a Microemulsion Medium |
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| Du Bin,Wei Qin,Zhao Xia. Nephelometric Determination of Mercury as Its Reinecke Salt in a Microemulsion Medium[J]. Journal of Instrumental Analysis, 1997, 16(6): 33-36 |
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| Authors: | Du Bin Wei Qin Zhao Xia |
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| Abstract: | Nephelometric determination of mercury as its Reinecke salt in a microemulsion medium is described. A nonionic microemulsion consisting of emulsifier OP, n-butanol, n-heptane and water was employed to improve the dispersion of the suspended matter and the stability of the system.The emulsion is stable over a period of 11 hours.The linear range of mercury mass concentrations is 0.04 - 2.4g. L~-1 at 400 nm.Mercury can be enriched on sulfhydryl dextran gel (SDG) .The relative deviation is less than 4.0%, while the recovery is 95% - 105%. The method is satisfactory for water and sediment analyses. It is simple, rapid and accurate. |
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| Keywords: | Reinecke salt Nephelometric analysis Mercury Microemulsion. |
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