Overview
EPA Method TO-15 is the procedure used to analyze air samples collected through canister sampling. “TO” stands for “toxic organics.” It is used to measure up to 97 volatile organic compounds (VOCs) of the total 189 hazardous air pollutants listed in the Clean Air Act. It is used for testing grab samples of ambient air, including bucket samples.
TO-15 List of Pollutants
| Compound | CAS No. |
|---|---|
| Acetaldehyde (ethanal); C2H4O | 75-07-0 |
| Acetonitrile (cyanomethane); C2H3N | 75-05-8 |
| Acetophenone; C8H8O | 98-86-2 |
| Acrolein (2-propenal); C3H4O | 0107-02-08 |
| Acrylamide; C3H5NO | 79-06-1 |
| Acrylic acid; C3H4O2 | 79-10-7 |
| Acrylonitrile (2-propenenitrile); C3H3N | 107-13-1 |
| Allyl chloride (3-chloropropene); C3H5Cl | 0107-05-01 |
| Aniline (aminobenzene); C6H7N | 62-53-3 |
| Benzene; C6H6 | 71-43-2 |
| Benzyl chloride (a-chlorotoluene); C7H7Cl | 100-44-7 |
| Beta-Propiolactone; C3H4O2 | 57-57-8 |
| Bis(2-Chloroethyl)ether; C4H8Cl2O | 111-44-4 |
| Bis(chloromethyl) ether; C2H4Cl2O | 542-88-1 |
| Bromoform (tribromomethane); CHBr3 | 75-25-2 |
| 1,3-Butadiene; C4H6 | 106-99-0 |
| Carbon disulfide; CS2 | 75-15-0 |
| Carbon tetrachloride; CCl4 | 56-23-5 |
| Carbonyl sulfide; COS | 463-S8-1 |
| Catechol (o-hydroxyphenol); C6H6O2 | 120-80-9 |
| Chloroacetic acid; C2H3ClO2 | 79-11-8 |
| Chlorobenzene; C6H5Cl | 108-90-7 |
| Chloroform; CHCl3 | 67-66-3 |
| Chloromethyl methyl ether; C2H5ClO | 107-30-2 |
| Chloroprene (2-chloro-1,3-butadiene); C4H5Cl | 126-99-8 |
| Cresylic acid (cresol isomer mixture); C7H8O | 1319-77-3 |
| Cumene (isopropylbenzene); C9H12 | 98-82-8 |
| Diazomethane; CH2N2 | 334-88-3 |
| 1,2-Dibromo-3-chloropropane; C3H5Br2Cl | 96-12-8 |
| 1,4-Dichlorobenzene (p-); C6H4Cl2 | 106-46-7 |
| 1,3-Dichloropropene; C3H4Cl2 (cis) | 542-75-6 |
| Diethyl sulfate; C4H10O4S | 64-67-5 |
| Dimethyl sulfate; C2H6O4S | 77-78-1 |
| Dimethylcarbamyl chloride; C3H6ClNO | 79-44-7 |
| 1,1-Dimethylhydrazine; C2H8N2 | 57-14-7 |
| 1,4-Dioxane (1,4 Diethylene oxide); C4H8O2 | 123-91-1 |
| Epichlorohydrin (l-chloro-2,3-epoxy propane); C3H5ClO | 106-89-8 |
| 1,2-Epoxybutane (1,2-butylene oxide); C4H8O | 106-88-7 |
| Ethyl acrylate; C5H8O2 | 140-88-5 |
| Ethyl carbamate (urethane); C3H7NO2 | 51-79-6 |
| Ethyl chloride (chloroethane); C2H5Cl | 75-00-3 |
| Ethylbenzene; C8H10 | 100-41-4 |
| Ethylene dibromide (1,2-dibromoethane); C2H4Br2 | 106-93-4 |
| Ethylene dichloride (1,2-dichloroethane); C2H4Cl2 | 0107-06-02 |
| Ethylene oxide; C2H4O | 75-21-8 |
| Ethyleneimine (aziridine); C2H5N | 151-56-4 |
| Ethylidene dichloride (1,1-dichloroethane); C2H4Cl2 | 75-34-3 |
| Formaldehyde; CH2O | 50-00-0 |
| Hexachlorobutadiene; C4Cl6 | 87-68-3 |
| Hexachloroethane; C2Cl6 | 67-72-1 |
| Hexane; C6H14 | 110-54-3 |
| Isophorone; C9H14O | 78-59-1 |
| m-Xylene; C8H10 | 108-38-3 |
| Methanol; CH4O | 67-56-1 |
| Methyl bromide (bromomethane); CH3Br | 74-83-9 |
| Methyl chloride (chloromethane); CH3Cl | 74-87-3 |
| Methyl chloroform (1,1,1 trichloroethane); C2H3Cl3 | 71-55-6 |
| Methyl ethyl ketone (2-butanone); C4H8O | 78-93-3 |
| Methyl iodide (iodomethane); CH3I | 74-88-4 |
| Methyl isobutyl ketone (hexone); C6H12O | 0108-10-1 |
| Methyl isocyanate; C2H3NO | 624-83-9 |
| Methyl methacrylate; C5H8O2 | 80-62-6 |
| Methyl tert-butyl ether; C5H12O | 1634-04-04 |
| Methylene chloride; CH2Cl2 | 75-09-2 |
| Methylhydrazine; CH6N2 | 60-34-4 |
| 2-Nitropropane; C3H7NO2 | 79-46-9 |
| N-Nitrosodimethylamine; C2H6N2O | 62-75-9 |
| N-Nitrosomorpholine; C4H8N2O2 | 59-89-2 |
| N-Nitrso-N-methylurea; C2H5N3O2 | 684-93-5 |
| N,N-Dimethylaniline; C8H11N | 121-69-7 |
| N,N-Dimethylformamide; C3H7NO | 68-12-2 |
| Nitrobenzene; C6H5NO2 | 98-95-3 |
| o-Cresol; C7H8O | 95-48-7 |
| o-Xylene; C8H10 | 95-47-6 |
| p-Xylene; C8H10 | 106-42-3 |
| Phenol; C6H6O | 108-95-2 |
| Phosgene; CCl2O | 75-44-5 |
| 1,3-Propane sultone; C3H6O3S | 1120-71-4 |
| Propionaldehyde; C2H5CHO | 123-38-6 |
| Propylene dichloride (1,2-dichloropropane); C3H6Cl2 | 78-87-5 |
| Propylene oxide; C3H6O | 75-56-9 |
| 1,2-Propyleneimine (2-methylazindine); C3H7N | 75-55-8 |
| Styrene oxide; C8H8O | 96-09-3 |
| Styrene; C8H8 | 100-42-5 |
| Tetrachloroethylene; C2Cl4 | 127-18-4 |
| Toluene; C7H8 | 108-88-3 |
| 1,1,2,2-Tetrachloroethane; C2H2Cl4 | 79-34-5 |
| Trichloethylene; C2HCl3 | 79-01-6 |
| 1,2,4-Trichlorobenzene; C6H3Cl3 | 120-82-1 |
| 1,1,2-Trichloroethane; C2H3Cl3 | 79-00-5 |
| Triethylamine; C6H15N | 121-44-8 |
| 2,2,4-Trimethyl pentane; C8H18 | 540-84-1 |
| Vinyl acetate; C4H6O2 | 0108-05-04 |
| Vinyl bromide (bromoethene); C2H3Br | 593-60-2 |
| Vinyl chloride (chloroethene); C2H3Cl | 7S-01-4 |
| Vinylidene chloride (1,1-dichloroethylene); C2H2Cl2 | 75-35-4 |
| Xylenes (isomer & mixtures); C8H10 | 1330-20-7 |
Reference
EPA Hazardous Waste Support Section SOP NO. HW-31, Revision 6. Analysis of Volatile Organic Compounds in Air Contained in Canisters by Method T0-15
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