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原子荧光光谱法测定化妆品中的铋

Determination of Bismuth in Cosmetics by HG-AFS

由于铅的毒性,铋化合物常被用作化妆品中铅的替代品。铋可以用极光的氢化物发生原子荧光光谱仪LUMINA 3300来测量。样品制备包括将Bi氧化成Bi3+,与BABH4反应生成BiH3。BiH3被信使气体移动到雾化器并在那里分解。用bihc灯激发Bi的基态,用光电倍增管测量Bi的荧光信号。

Bismuth compounds are often used in cosmetics as a replacement for lead given its toxicity. Bismuth can be measured by Aurora’s hydride generation atomic fluorescence spectrometer, the LUMINATM 3300. The sample preparation consists of oxidizing Bi to Bi3+, which reacted with BABH4 yields BiH3. The BiH3 is moved to the atomizer by the courier gas and broken down there. The ground state of Bi can be excited by the light by the Bi-HC lamp and the fluorescence sign is measured consequently by photo multiple tube.