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氢焰离子化检测器是目前有机化合物微量色谱分析的主要检测器。它的主要特点是,灵敏度高,最小检出量到 ppb 数量级,稳定性好,响应快,线性范围宽,因此获得了广泛的应用。该检测器的工作原理如下:氢气在空气中燃烧时产生离子,在电场作用下产生极微弱的离子流,一般只有10~(-12)～10~(-11)安。如果在氢火焰中引入微量有机物,则电流急剧增加,可以达到10~(-7)安,并与引入氢火焰中有机物的速
Hydrogen flame ionization detector is currently the main detector of organic compounds for trace chromatographic analysis. Its main features are high sensitivity, the minimum detection volume to the order of ppb, good stability, fast response, wide linear range, it has been widely used. The detector works as follows: hydrogen in the air combustion ions, resulting in a very weak ion flux in the electric field, usually only 10 ~ (-12) ~ 10 ~ (-11) Ann. If a small amount of organic matter is introduced into the hydrogen flame, the current sharply increases to reach 10 -7 (A), and the rate of introduction of the organics in the hydrogen flame