ABSTRACT
A halogen-speci c detector, such as an electrolytic conductivity detector (ELCD) or a microcoulometric detector, determines the analytes separated on the GC column. An ECD, FID, quadrupole mass selective detector, or ion trap detector (ITD) may also be used. A photoionization detector (PID) may also be used to determine unsaturated halogenated
Table 27.1 lists some commonly used volatile halogenated hydrocarbons. Most of these are U.S. EPA listed pollutants. e term “volatile” indicates that these substances may be extracted by the purge and trap technique. is also includes a few compounds of relatively moderate boiling range, responding adequately to the purge and trap method. e characteristic masses for the GC/MS determination are also presented in the table.
