应用化学 ›› 1987, Vol. 0 ›› Issue (3): 64-66.
• 研究简报 • 上一篇 下一篇
杨定国, 乌云平
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Yang Dingguo, Wu Yunping
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摘要： Be(Ⅱ)的光度法测定已有研究,但在阴离子型-非离子型混合表面活性剂存在下,Be(Ⅱ)与铬天青B(CAB)显色体系尚未见报导。本文研究了在十二烷基苯磺酸钠(SDBS)和聚乙二醇辛基苯基醚(OP)存在下,Be(Ⅱ)与CAB络合反应的条件和光谱性能,拟定了微量铍的分析方法,用合成样和标样进行本法考验,结果满意。
Abstract: A sensitive method for trace determination of beryllium is developed. In a buffer solution of pH5.5 of (CH2)6N4-HCl and in the presence of emulsifier OP and sodium dodecylbenzene sulfonate (SDBS) Be(Ⅱ) forms a purple complex with chromazurol B(CAB). The molar absorptivity coefficient of the complex is 8.55×104(605-610nm). Beer's law is obeyed with concentration of beryllium ranging from O to 2.5μg/25ml. The composition of the complex was estimated as Be(Ⅱ):CAB=1:2. The method has been applied sactisfactority to the determination of Be in minerals.
杨定国, 乌云平. 阴离子型-非离子型混合表面活性剂存在下铍与铬天青B显色反应的研究[J]. 应用化学, 1987, 0(3): 64-66.
Yang Dingguo, Wu Yunping. STUDY ON THE COLOUR REACTION OF BERYLLIUM WITH CHROMAZUROL B(CAB)IN THIE PRESENCE OF MIXED IONIC-NONIONIC SURFACTANTS[J]. Chinese Journal of Applied Chemistry, 1987, 0(3): 64-66.
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