Gas
Chromatography is a new transmission sleeve type separation analysis
method developed rapidly in the past 20 years and has gradually become a
specialized stainless steel coiled sleeve gas chromatography method. Its
earliest application to the separation and analysis of petroleum
products has been widely used in the scientific research and production
of petroleum, chemical, organic synthesis, medicine and food industries.
Not only that, gas chromatography can also be applied to biochemistry,
clinical diagnosis and Research
on pharmacology and other aspects, especially in the field of
environmental protection, for the monitoring of water, air, etc., gas
chromatography has become a means of DU DU hub lubrication. To
obtain stable and reliable analytical data, it is necessary to ensure
the optimal operating conditions of the gas chromatography system, and
the performance of various parts of the device, such as carrier gas,
injection port, column, detector, etc., greatly affects the
chromatogram. The operating condition of the system. It is of course very important to choose a good analytical method, but
its primary condition is to achieve it on a stable, well-operated
chromatographic system, so ensuring that the performance of each part of
the device is a prerequisite for reliable analytical data.
The glass liner inside the sampler has the following main functions:
1. Provide a uniform temperature vaporization chamber to prevent local overheating.
2. The inertness of glass is not as good as stainless steel, reducing
the possibility of sample decomposition during vaporization.
3,
easy to remove and clean, to keep the surface of the clean vaporizer,
some traces of non-volatile components will gradually accumulate in the
vaporization chamber, will slowly decompose at high temperatures, so
that the base flow increases, noise increases, through the cleaning
glass liner The sleeve can eliminate this effect.
4,
according to the need to select the appropriate thickness of the wall
thickness and diameter of the glass liner to change the volume of the
vaporization chamber, instead of replacing the entire injection heating
block. From the above several aspects, we can know the reason why the glass liner affects the chromatographic behavior.
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