Lo J G, Yeh S J
J Chromatogr Sci. 1980 Aug;18(8):359-63. doi: 10.1093/chromsci/18.8.359.
A method has been developed for the determination of trace levels of chromium by radio-gas chromatography. The technique involves conversion of radioactive 51Cr to a metal chelate compound, using C2H5I131 as an internal standard, and detection of radioactivity of 51Cr in the chelate by a flow system surrounding a Nal(TI) scintillation detector. The detection limit is found to be as low as 10(-12) g. From the observed radio-chromatogram it can be shown that the method is selective and free from interference.
已开发出一种通过放射气相色谱法测定痕量铬的方法。该技术包括将放射性的51Cr转化为金属螯合物，使用C2H5I131作为内标，并通过围绕碘化钠（铊）闪烁探测器的流动系统检测螯合物中51Cr的放射性。检测限低至10(-12)克。从观察到的放射色谱图可以看出，该方法具有选择性且无干扰。
