实用同位素比值测量的激光光谱学

R. Shaw, C. M. Barshick, J. P. Young, J. Ramsey
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引用次数: 0

摘要

同位素比值测量通常采用的方法很少适合于现场使用。一个例子是热电离质谱法(TIMS)i,其中固体样品溶解,灯丝装有所得溶液,灯丝安装在源室中,质谱仪泵送到低压,灯丝加热产生分析离子,最后离子根据空间或时间上的质量分离进行计数。需要现场质谱测量,特别是在环境修复领域,接近实时的结果可以节省时间并降低成本。微型离子阱可用于现场测量的有机物已被报道。2目前还没有在野外使用的同位素比值方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Laser Spectroscopy for Practical Isotope Ratio Measurements
Isotope ratio measurements are typically accomplished by methods that are seldom amenable to field use. An example is thermal ionization mass spectrometry (TIMS)i where solid samples are dissolved, a filament loaded with the resulting solution, the filament mounted in a source chamber, the mass spectrometer pumped to low pressure, the filament heated to produce analyte ions, and finally the ions separated according to mass in either space or time for counting. There is a need for field mass spectrometric measurements, particularly in the environmental remediation arena, where near real time results can save time and reduce costs. Miniaturized ion traps that can be deployed for field measurement of organics have been reported. 2 There currently are no isotope ratio methods in field use.
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