Method | EPA Method 524.2 |
---|---|
Title | MEASUREMENT OF PURGEABLE ORGANIC COMPOUNDS IN WATER BYCAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY |
Abstract | Volatile organic compounds and surrogates with low water solubility are extracted (purged) from the sample matrix by bubbling an inert gas through the aqueous sample. Purged sample components are trapped in a tube containing suitable sorbent materials. When purging is complete, the sorbent tube is heated and backflushed with helium to desorb the trapped sample components into a capillary gas chromatography (GC) column interfaced to a mass spectrometer (MS). The column is temperature programmed to facilitate the separation of the method analytes which are then detected with the MS. Compounds eluting from the GC column are identified by comparing their measured mass spectra and retention times to reference spectra and retention times in a data base. Reference spectra and retention times for ahalytes are obtained by the measurement of calibration standards under the same conditions used for samples. The concentration of each identified component is measured by relating the MS response of the quantitation ion produced by that compound to the MS response of the quantitation ion produced by a compound that is used as an internal standard. Surrogate analytes, whose concentrations are known in every sample, are measured with the same internal standard calibration procedure. |
CAS # | Compound Name |
---|---|
67-64-1 | Acetone |
107-13-1 | Acrylonitrile |
107-05-1 | Allyl chloride |
71-43-2 | Benzene |
108-86-1 | Bromobenzene |
74-97-5 | Bromochloromethane |
75-27-4 | Bromodichloromethane |
75-25-2 | Bromoform |
74-83-9 | Bromomethane |
78-93-3 | 2-Butanone |
104-51-8 | n-Butylbenzene |
135-98-8 | sec-Butylbenzene |
98-06-6 | tert-Butylbenzene |
75-15-0 | Carbon disulfide |
56-23-5 | Carbon tetrachloride |
107-14-2 | Chloroacetonitrile |
108-90-7 | Chlorobenzene |
109-69-3 | 1-Chlorobutane |
75-00-3 | Chloroethane |
67-66-3 | Chloroform |
74-87-3 | Chloromethane |
95-49-8 | 2-Chlorotoluene |
106-43-4 | 4-Chlorotoluene |
124-48-1 | Dibromochloromethane |
96-12-8 | 1,2-Dibromo-3-chloropropane |
106-93-4 | 1,2-Dibromoethane |
74-95-3 | Dibromomethane |
95-50-1 | 1,2-Dichlorobenzene |
541-73-1 | 1,3-Dichlorobenzene |
106-46-7 | 1,4-Dichlorobenzene |
110-57-6 | trans-1,4-Dichloro-2-butene |
75-71-8 | Dichlorodifluoromethane |
75-34-3 | 1,1-Dichloroethane |
107-06-2 | 1,2-Dichloroethane |
75-35-4 | 1,1-Dichloroethene |
156-59-2 | cis-1,2-Dichloroethene |
156-60-5 | trans-1,2-Dichloroethene |
78-87-5 | 1,2-Dichloropropane |
142-28-9 | 1,3-Dichloropropane |
594-20-7 | 2,2-Dichloropropane |
563-58-6 | 1,1-Dichloropropene |
513-88-2 | 1,1-Dichloropropanone |
10061-01-5 | cis-1,3-Dichloropropene |
10061-02-6 | trans-1,3-Dichloropropene |
60-29-7 | Diethyl ether |
100-41-4 | Ethylbenzene |
97-63-2 | Ethyl methacrylate |
87-68-3 | Hexachlorobutadiene |
67-72-1 | Hexachloroethane |
591-78-6 | 2-Hexanone |
98-82-8 | Isopropylbenzene |
99-87-6 | 4-Isopropyltoluene |
126-98-7 | Methacrylonitrile |
96-33-3 | Methylacrylate |
75-09-2 | Methylene chloride |
74-88-4 | Methyl iodide |
80-62-6 | Methylmethacrylate |
108-10-1 | 4-Methyl-2-pentanone |
1634-04-4 | Methyl-t-butyl ether |
91-20-3 | Naphthalene |
98-95-3 | Nitrobenzene |
79-46-9 | 2-Nitropropane |
76-01-7 | Pentachloroethane |
107-12-0 | Propionitrile |
103-65-1 | n-Propylbenzene |
100-42-5 | Styrene |
630-20-6 | 1,1,1,2-Tetrachloroethane |
79-34-5 | 1,1,2,2-Tetrachloroethane |
127-18-4 | Tetrachloroethene |
109-99-9 | Tetrahydrofuran |
108-88-3 | Toluene |
87-61-6 | 1,2,3-Trichlorobenzene |
120-82-1 | 1,2,4-Trichlorobenzene |
71-55-6 | 1,1,1-Trichloroethane |
79-00-5 | 1,1,2-Trichloroethane |
79-01-6 | Trichloroethene |
75-69-4 | Trichlorofluoromethane |
96-18-4 | 1,2,3-Trichloropropane |
95-63-6 | 1,2,4-Trimethylbenzene |
108-67-8 | 1,3,5-Trimethylbenzene |
75-01-4 | Vinyl chloride |
95-47-6 | o-Xylene |
108-38-3 | m-Xylene |
106-42-3 | p-Xylene |