Analytical Sciences

Oxygen-flask Combustion with Light Beam Ignition

Noboru EBIHARA,*¹ Hiroki SAKURAI,*² Masanori FUJINAMI,*³ Koichi OGUMA,*³ and Tetsuo UCHIDA*⁴

*1 Chiba Industrial Technology Research Institute, Kasori, Wakaba, Chiba 264-0017, Japan
*2 Research Department, Nissan ARC, Ltd., Natsushima, Yokosuka 237-0061, Japan
*3 Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, Yayoi, Inage, Chiba 263-8522, Japan
*4 Comprehensive Center of History and Culture, Beppu University, Kitaishigaki, Beppu 874-8501, Japan

A robust oxygen-flask combustion system was developed using light beam ignition. An appropriate amount of environmental sample was wrapped with a small piece of filter paper and held in a basket made of platinum-zirconium spiral. After the sample was inserted into an oxygen-filled flask containing an acid mixture, the light beam from an overhead projector lamp was focused to ignite the sample. The combusted products were absorbed into the acid mixture by shaking the flask and then used for the ICP-AES measurement of metals. The proposed method was successfully applied to the determination of metals in Environmental Standard Reference Materials and Artemia salina. The present method is also applicable to ion chromatographic measurements of chlorine in polyvinyl chloride wall paper by using hydrogen peroxide as absorbent.

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