What is C4+ in total carbon analysis?
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What is C4+ in total carbon analysis? Who can explain it in detail?
It is a general term for molecules with a more complex molecular structure than those with one fewer carbon atom, generally referring to hydrocarbon molecules. Under normal circumstances, hydrocarbons of C1 to C4 are relatively fewer in number and have simpler structures; their individual components can be analyzed directly using chromatography, such as methane, ethane, ethylene, propane, butane, etc. Hydrocarbons with a carbon count of C5 or higher have numerous isomers, which results in longer separation times. To simplify the analysis process and reduce the time required, hydrocarbons of C4 and above can be treated as a single group for analysis, eliminating the need for detailed separation.