40 CFR Table B-3 to Subpart B of Part 53
Interferent Test Concentration, Parts per Million
June 9, 2020
Open Table
| Pollutant | Analyzer type | Hydro-chloric acid | Ammonia | Hydrogen sulfide |
Sulfur dioxide | Nitrogen dioxide | Nitric oxide | Carbon dioxide | Ethylene | Ozone | Mxy- lene |
Water vapor | Carbon monoxide | Methane | Ethane | Naphthalene |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SO2 | Ultraviolet fluorescence | 50.1 | 40.14 | 0.5 | 0.5 | 0.5 | 0.2 | 20,000 | 60.05 | |||||||
| SO2 | Flame photometric | 0.01 | 40.14 | 750 | 320,000 | 50 | ||||||||||
| SO2 | Gas chromatography | 0.1 | 40.14 | 750 | 320,000 | 50 | ||||||||||
| SO2 | Spectrophotometric-wet chemical (pararosanaline) | 0.2 | 0.1 | 0.1 | 40.14 | 0.5 | 750 | 0.5 | ||||||||
| SO2 | Electrochemical | 0.2 | 0.1 | 0.1 | 40.14 | 0.5 | 0.5 | 0.2 | 0.5 | 320,000 | ||||||
| SO2 | Conductivity | 0.2 | 0.1 | 40.14 | 0.5 | 750 | ||||||||||
| SO2 | Spectrophotometric-gas phase, including DOAS | 40.14 | 0.5 | 0.5 | 0.2 | |||||||||||
| O3 | Chemiluminescent | 30.1 | 750 | 40.08 | 320,000 | |||||||||||
| O3 | Electrochemical | 30.1 | 0.5 | 0.5 | 40.08 | |||||||||||
| O3 | Spectrophotometric-wet chemical (potassium iodide) | 30.1 | 0.5 | 0.5 | 30.5 | 40.08 | ||||||||||
| O3 | Spectrophotometric-gas phase, including ultraviolet absorption and DOAS) | 0.5 | 0.5 | 0.5 | 40.08 | 0.02 | 20,000 | |||||||||
| CO | Non-dispersive Infrared | 750 | 20,000 | 410 | ||||||||||||
| CO | Gas chromatography with flame ionization detector | 20,000 | 410 | 0.5 | ||||||||||||
| CO | Electrochemical | 0.5 | 0.2 | 20,000 | 410 | |||||||||||
| CO | Catalytic combustion-thermal detection | 0.1 | 750 | 0.2 | 20,000 | 410 | 5.0 | 0.5 | ||||||||
| CO | IR fluorescence | 750 | 20,000 | 410 | 0.5 | |||||||||||
| CO | Mercury replacement-UV photometric | 0.2 | 410 | 0.5 | ||||||||||||
| NO2 | Chemiluminescent | 30.1 | 0.5 | 40.1 | 0.5 | 20,000 | ||||||||||
| NO2 | Spectrophotometric-wet chemical (azo-dye reaction) | 0.5 | 40.1 | 0.5 | 750 | 0.5 | ||||||||||
| NO2 | Electrochemical | 0.2 | 30.1 | 0.5 | 40.1 | 0.5 | 750 | 0.5 | 20,000 | 50 | ||||||
| NO2 | Spectrophotometric-gas phase | 30.1 | 0.5 | 40.1 | 0.5 | 0.5 | 20,000 | 50 |
1Concentrations of interferent listed must be prepared and controlled to ±10 percent of the stated value.
2Analyzer types not listed will be considered by the Administrator as special cases.
3Do not mix with the pollutant.
4Concentration of pollutant used for test. These pollutant concentrations must be prepared to ±10 percent of the stated value.
5If candidate method utilizes an elevated-temperature scrubber for removal of aromatic hydrocarbons, perform this interference test.
6If naphthalene test concentration cannot be accurately quantified, remove the scrubber, use a test concentration that causes a full scale response, reattach the scrubber, and evaluate response for interference.
Tried the LawStack mobile app?
Join thousands and try LawStack mobile for FREE today.
- Carry the law offline, wherever you go.
- Download CFR, USC, rules, and state law to your mobile device.
