EPA TO Methods for Ambient Air Analysis

Ambient Air Samples have a matrix that is similar to the air that surrounds us. These samples typically have low concentrations of most organic compounds. These samples are analyzed using the EPA Compendium TO Methods which were developed to measure low level concentrations of these compounds. The following Table is a catalog list of the tests performed by EAS.

METHOD DESCRIPTION COMMENTS INSTRUMENT
TO-1 Hydrocarbons, C5 to C28 see TO-17 Used to Measure Diesel Range Organics in Ambient Air GC/FID
TO-2 Volatile Organics, see TO-17 Replaced by TO-17 GC/MS
TO-3 Detailed Hydrocarbon analysis and TPH   GC/FID
TO-4A Chlorinated Pesticides, Organo Phosphate Pesticides, and PCB's   GC/MS
TO-4A SIM Pesticides or PCB's by SIM   GC/MS/SIM
TO-8 Phenol   HPLC
TO-8 Phenol and Cresol's   HPLC
TO-10 Chlorinated Pesticides Medium Volume Sampler, see TO-4A   GC/MS
TO-11 Formaldehyde on DNPH cartridge   HPLC
TO-11 Aldehydes and Ketones on DNHP Cartridge DNPH Badges can be used HPLC
TO-12 Non-methane Hydrocarbons Also TVOC, TPH, TNMOC GC/FID
TO-13A Polynuclear Aromatic Hydrocarbons   GC/MS
TO-13A Semi Volatiles, 8270 (B/N) List Phenols can also be done by this method GC/MS
TO-13A Petroleum Hydrocarbons, Diesel Range   GC/FID
TO-13A Fuel Fingerprint   GC/MS
TO-14A Volatile Organics from SUMMA canister or Tedlar Bag   GC/MS
TO-14/TO-12 Hydrocarbons, (TVOC, TPH, TNMHC)   GC/FID
TO-14 Hydrocarbons, BTEX-TPH   GC/FID
TO-14 FID Hydrocarbon/Ozone Precursor Analysis, PAMS List   GC/FID
TO-14 FID Forensic Detailed Hydrocarbon Analysis PIANO Report for Air Samples GC/FID
TO-14 FPD

EPA 15M

 Hydrogen Sulfide Reduced Sulfur Compounds Uses A Cryogenic Concentrator for MDL of less then 1ppbv GC/FPD
TO-15 Volatile Organics from SUMMA canister 86 Compound List Target List is Similar to 8260 List GC/MS
TO-15 SIM Volatile Organics low Level Full Scan MRL < 0.005 ppbv GC/MS
TO-15 Combined Full Scan and SIM For samples with high and low concentrations and action limits GC/MS
TO-15 BTEX and Fuel Oxygenates   GC/MS
TO-17 Volatile Organics from Sorbent Tube VOC Compounds and Volatile Organic Acids GC/MS
TO-17 Volatile Organic Compounds Sample collected in field in canister and analyzed in lab on TO-17 trap.  
EAS Sulfur Hexafluoride   GC/ECD
EAS 1,1-Difluoroethane Soil Gas Tracer GC/FID