ABSTRACT
This chapter briefly discusses the application, chemical properties and physical properties of dichlorobenzene. It presents detailed information on the air analysis and analysis of aqueous and nonaqueous samples of dichlorobenzene. Dichlorobenzene is colorless liquid with faint odor, colorless crystalline solid, and sublimes at ambient temperature. It is insoluble in water and soluble in organic solvents. During the analysis of aqueous and nonaqueous samples of dichlorobenzene, aqueous samples are extracted by the purge and trap method. The sample is purged with helium or nitrogen. Then, the analyte is thermally desorbed out of the trap and swept onto a gas chromatography (GC) column for separation, and detected by hall electrolytic conductivity detector (HECD), electron capture detector (ECD), photoionization detector (PID), or a mass spectrometer. During the air analysis of dichlorobenzene, samples are collected in a SUMMA passivated canister under pressure using an additional pump or at subatmospheric pressure by initially evacuating the canister.
