Analysis of the composition of diesel and light coal tar fractions

Depending on your requirements, to analyze the group composition of crude oil fractions in the 200–400 degree range, any one of the three methods—SH/T0606, SH/T0606 Appendix A, and SH/T0659—can be used. These are all common methods for analyzing petroleum products, and they possess a certain degree of reliability and accuracy. Among them, SH/T0606 is \"Determination of aromatic compounds in petroleum products – High-performance liquid chromatography method.\" This method is suitable for analyzing the content of aromatic compounds in petroleum products, and can be used to determine the amount of aromatic compounds in crude oils from the 200–400 degree fraction. Appendix A of SH/T0606 is an additional method for analyzing the composition of diesel and light coal tar by gas chromatography, and it is suitable for the analysis of n-alkanes, aromatic hydrocarbons, and cycloalkanes in petroleum products. If you wish to know the contents and proportions of these components in the 200-400 degree distillate feed oil, this additional method can meet your needs. SH/T0659 is \"Determination of linear alkanes, cis and trans olefins, and cycloalkanes in petroleum products – Gas chromatography method,\" and it is suitable for analyzing the contents of linear alkanes, cis and trans olefins, as well as cycloalkanes in petroleum products. If you are concerned about the content and ratio of these components in the feed oil with a boiling range of 200–400 degrees, this method can also be used. In summary, depending on your needs, you can choose any one of the three methods—SH/T0606, Appendix A to SH/T0606, or SH/T0659—to analyze the group composition of the crude oil feedstock in the 200–400 degree range, based on the actual circumstances. Depending on the specific components to be analyzed, you can choose among these three methods. .

Thank you, teacher, for your detailed and thorough guidance!