[The process of developing and improving the analytical method of benzene in organic solvents for household use:...

A method for the determination of benzene in spot remover using gas chromatography (GC) and high-performance liquid chromatography (HPLC) was developed. The method was evaluated by collaborative study. There are various types of household products containing organic solvents. The collaborative study clarified that a clean-up procedure is necessary for the analysis of products other than spot remover. Thus, our improved method adopted the head space method in GC and microdiffusion method in HPLC as the clean-up procedure.