Method for detecting related substances of 2, 3-dimethyl bromobenzene

[0030] Example 1:

[0031] A method of detection of 2,3-dimethylphenylphenylphenylphenyl, specifically includes the steps of:

[0032] Take acetonitrile as a white solvent; take the right amount of 2,3-dimethyl bromobenzene, dissolve with acetonitrile, and produce 10 mg / ml of 2,3-dimethyl bromobenzene solution, as the test solution; Xylene, 3-nitroenen xylene, 2,3-dimethylennemine, 4-bromo-1,2-xylene, 2-bromo-1,4-xylene, 2,6-dimethyl bromide Benzene, 2,4-dimethyl bromobenzene and 5-bromoate, adding acetonitrile, prepared to prepare 20 μg, 3-nitroxyl xylene 10 μg, 2,3-dimethylaniline per 1 ml 10 μg, 4-bromo-1,2-xylene 100 μg, 2-bromo-1,4-xylene 30 μg, 2,6-dimethyl bromobenzene 30 μg, 2,4-dimethyl bromobenzene 30 μg and 5- A solution of a 20 μg of xylene between bromine as a control solution;

[0033] The chromatographic conditions of gas chromatography are:

[0034] Chromatograph: Japan Island GC2030;

[0035] Columns: 2,6-di -O-pentyl-3-methoxy derivative modified β-cyclodextrin