ABSTRACT

This chapter briefly discusses the application, chemical properties and physical properties of chloroform. It presents detailed information on the air analysis and analysis of aqueous and nonaqueous samples of chloroform. Chloroform is a volatile halogenated solvent, soluble in water, miscible in organic solvents and nonflammable. During the analysis of aqueous and nonaqueous samples of chloroform, aqueous samples are subjected to the purge and trap concentration method. An aliquot of the sample is purged under helium flow chloroform and other volatile analyte is thermally desorbed out from the sorbent trap and swept onto a gas chromatography (GC) column for separation. During the air analysis of chloroform, samples are collected in a SUMMA passivated canister under pressure using an additional pump or at subatmospheric pressure by initially evacuating the canister. Then, the air is transferred into a cryogenically cooled trap attached to a GC column.