Chinese Journal of Applied Chemistry ›› 1987, Vol. 0 ›› Issue (3): 64-66.
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Yang Dingguo, Wu Yunping
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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.
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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