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Preparation of the sample before the final determination by gas or liquid chromatography is an extremely important stage of the analytical procedure. According to estimates, sample preparation takes at least half the time of the entire procedure. This can also be one of the main sources of errors. today sample preparation with Buehler equipment, it is as fast and efficient as possible.
Key recommendations
Reducing the time of sample preparation and simplicity of the method, increasing the selectivity of the extraction of the analyzed substance, improving the properties of analytical determinations are the main characteristics that the sample preparation stage must satisfy. The requirements of analytical chemistry are also extremely important, mainly for the elimination or reduction of solvent consumption.
Miniaturization of the process, especially in combination with its automation or robotization and direct combination with the final determination by gas or liquid chromatography, complement the required characteristics of modern analytical methods.
In fact, you cannot determine a method that has all the necessary characteristics of modern analytical methods, just as you cannot specify the best method for labeling a specific group of compounds - the choice of method will not only be a compromise between the expected advantages.
Factors affecting sample preparation
High extraction efficiency is often one of the main factors determining the choice of solvent.
- However, in many cases, other factors may be important, as well as the goal that we want to achieve in the implemented definitions.
- The use of small amounts of solvent in microextraction does not prevent the extraction of macromolecules into the organic phase, especially for real samples of the environment.
- The use of a non-porous polyethylene or polypropylene membrane eliminates this essential disadvantage of extraction.
It is also possible to use other membranes. Thus, it is necessary to be as responsible as possible when choosing laboratory equipment for research. Buehler today offers the best equipment in the presented aspect. You can be sure that you are getting high-quality equipment at affordable prices. An appropriate warranty is available for all types of installations.
