ENVIRONMENTAL TESTING CATALOG VOCS EPA 524.2

DCLS Method

Volatile organic compounds in water by purge and trap capillary column GCMS

Reference Method

EPA 524.2

Test Description

Samples are introduced into the purging device via an autosampler, where volatile organic compounds (VOCs) are trapped on a special adsorbant material called a trap. The trap is heated to release the VOCs into the Gas Chromatograph/Mass Spectrometer (GC/MS). The GC/MS instrument separates, identifies and determines a concentration for any VOCs that are present.

Sample Collection

Duplicate 40mL clear glass Volatile Organic Analysis (VOA vials), preserved to a pH of <2 with 1:1 HCl and ascorbic acid.

Storage Guidelines

The samples are stored in a refrigerator in the analytical lab area where they are kept between 0 to 6ºC until analysis.

Testing Group

Organics

Analytes

Benzene
Bromobenzene
Bromochloromethane
Bromodichloromethane
Bromoform
Bromomethane
Butylbenzene (n-)
Carbon tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
Chlorotoluene (2-)
Chlorotoluene (4-)
Dibromochloromethane
Dibromomethane
Dichlorobenzene (1,2-)
Dichlorobenzene (1,3-)
Dichlorobenzene (1,4-)
Dichlorodifluoromethane
Dichloroethane (1,1-)
Dichloroethane (1,2-)
Dichloroethene (1,1-)
Dichloroethene (cis-1,2-)
Dichloroethene (trans-1,2-)
Dichloropropane (1,2-)
Dichloropropane (1,3-)
Dichloropropane (2,2-)
Dichloropropene (1,1-)
Dichloropropene (cis-1,3-)
Dichloropropene (trans-1,3-)
Ethylbenzene
Hexachlorobutadiene (1,3-)
Isopropylbenzene
Isopropyltoluene (4-)
Methylene chloride (Dichloromethane)
Methyl tert-butyl ether
Naphthalene
Propylbenzene (n-)
Sec-butylbenzene
Styrene
Tert-butylbenzene
Tetrachloroethane (1,1,1,2-)
Tetrachloroethane (1,1,2,2-)
Tetrachloroethene
Toluene
Trichlorobenzene (1,2,3-)
Trichlorobenzene (1,2,4-)
Trichloroethane (1,1,1-)
Trichloroethane (1,1,2-)
Trichloroethene
Trichlorofluoromethane
Trichloropropane (1,2,3-)
Trimethylbenzene (1,2,4-)
Trimethylbenzene (1,3,5-)
Vinyl chloride
Xylenes (total)
THMS (total)