Determination of low molecular weight halogenated hydrocarbons by a gas chromatograph with a wide bore capillary column

Low molecular weight halogenated hydrocarbons (LMHs) in industrial water and waste water have been determined according to JIS K 0125, in which a packed column has been used as the GC column. In this report, wide bore capillary columns were evaluated as a GC column. DB-624 showed the best separation ability of 5 kinds of column (DB-1, DB-5, DB-17, DB-624, DB-WAX). When hexane solution of LMHs was measured with DB-624, the relative standard deviations (RSD) of response (peak height) and retention time (RT) were 0.82.1% and 0.51.4%, respectively. When the head space method was used, the RSDs of response and RT were 3.45.0% and 0.040.20%, respectively.