Determination of Hydride Forming Elements : by Hydride Genaration Atomic Spectromeｔｒｙ

[出版社版]This review describes the author's work on the determination of hydride forming elements by hydride generation atomic absorption spectrometry(HG-AAS), inductively coupled plasma-atomic emission spectrometry(ICP-AES) and inductively coupled plasma-mass spectrometry(ICP-MS) using electric devices. The author sets up hydride generation apparatus where hydride is generated in a mixing coil and separated from the solution in a gas-liquid separator. The system is operated with variable speed peristaltic pumps and pinch valves by manipulating electromagnetic relays and timers. The apparatus are attached to AAS,ICP-AES and ICP-MS instruments,respectively. Interfering elements such as transition metals are removed by Chelex 100 resin separation. AAS is the most convenient to determine stable hydride forming elements, but is not reliable for unstable hydrides. ICP is useful for all the hydride generation elements. ICP-MS is sensitive for the elements, but matrix elements should be eliminated before determination