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CARLO ERBA公司的 FRACTOVA-2700型氦离子气相色谱仪在我国有一定数量的用户,但据了解,使用中该仪器的最低检测限一般都没有达到说明书所列的水平,有的相差很大。我所购置的这种仪器也存在这种情况。为了解决这个问题,我们对原流程作了一些修改,并在载气除水,检测器极化电压和色谱条件最佳化方面做了一些工作,使仪器完全达到了规定的灵敏度指标。下面简要介绍我们在这方面所作的工作。
CARLO ERBA’s FRACTOVA-2700 Helium Ion Gas Chromatograph has a certain number of users in our country, but it is understood that the minimum detection limit of this instrument in use generally does not reach the level listed in the specification, and some are quite different. This kind of instrument that I purchased also has this kind of situation. In order to solve this problem, we made some changes to the original process, and did some work on the carrier gas removal, the polarization voltage of the detector and the optimization of the chromatographic conditions, so that the instrument fully achieved the specified sensitivity index. Here’s a brief overview of what we did in this area.