A quantitative tunable element-selective detector for gas chromatography
A quantitative tunable element-selective detector for gas chromatography
复制标题
气相色谱定量可调元素选择性检测器
DOI：
10.1039/an9739800432
复制
发表时间：
1973
期刊：
影响因子：
4.2
通讯作者：
G. E. Penketh
中科院分区：
文献类型：
--
作者：
W. R. McLean;D. Stanton;G. E. Penketh
描述了一种基于原子发射光谱的探测器，这种光谱是有机化合物在低压微波持续氦等离子体中分解时产生的。利用传统的衍射光栅光谱仪设备，可以以线性比例和定量的方式对有机化合物中常见的所有非金属元素进行灵敏和选择性的检测。一定量的清除气体用于防止等离子管内的碳沉积。色谱柱流出在元素选择性检测器和非选择性火焰电离检测器之间分离。后者作为解释元素选择检测器结果的参考，并协助确定原子比和有机化合物的经验公式。
A detector based on the atomic-emission spectra that result when organic compounds are decomposed in a low-pressure, microwave-sustained helium plasma is described. All of the non-metallic elements normally found in organic compounds can be sensitively and selectively detected in a linearly proportional and quantitative manner by means of conventional diffraction grating spectrometer equipment. A controlled amount of a scavenger gas is used to prevent carbon deposition inside the plasma tube. The chromatographic column outflow is split between the element-selective detector and a non-selective flame-ionisation detector. The latter acts as a reference for interpreting element-selective detector results and assists with the determination of atomic ratios and the empirical formulae of organic compounds.