Gas chromatography is an analytical method utilized in many fields of science. It is an extremely useful tool for the separation, identification, and quantification of volatile and semi-volatile compounds. In order to facilitate communication between practitioners in the field, an international gas chromatography language was developed and codified in a standard known as GB 4946-85.
GB 4946-85 is a comprehensive document which provides definitions for all the key components of gas chromatography with separate divisions dedicated to sampling and sampling preparation, instrumentation and accessories, chromatography, and detection. Sampling and sampling preparation includes frequently used words for sample manipulation such as boil, evaporate, filter, and dilute. Instrumentation and accessories contains terms related to the components necessary for a chromatographic system such as syringe, preconcentrator, and capillary column. Chromatographic terms covers the basics of separation such as broadening, peak tailing, and peak width, as well as more sophisticated concepts such as peak resolution and shape factor. Detectors, the most important component of a modern gas chromatograph, are a key part of the standard and their descriptions include flame ionization detector, thermal conductivity detector, and electron capture detector.
Although GB 4946-85 is often referred to as a Chinese language, the definitions are all in English and the standard is widely used by gas chromatography practitioners outside of China. The language defined in the standard is useful as it provides a common language among practitioners, regardless of national background, allowing them to communicate effectively. Additionally, the terminology can be used as a reference for academics and scientists writing about the field.
As instrumentation in the area of gas chromatography continues to evolve, so does the terminology used to describe it. GB 4946-85 ensures that practitioners keep up with the latest industry standards, further facilitating communication and collaboration. Through this, practitioners not only gain a thorough understanding of their own system, but also gain insight into the current level of advancement in the field. Knowing what terms and instrumentation are available ensures efficient communication in the area and helps to keep pace with the cutting edge of the field.
In conclusion, GB 4946-85 is an invaluable tool for those involved in gas chromatography. From scientists writing about the field to practitioners seeking to gain a better understanding of their system, this language offers much needed clarity and precision in describing the various components and terms related to gas chromatography.
