AQM, CEM, QAL, EN, NAAQS, …?
There are a lot of abbreviations, acronyms and chemical formulas in our line of business. Here are some of them spelled out. You find chemical formulas on the compounds page.
| AAQM | Ambient Air Quality Monitoring |
| AAQMS | Ambient Air Quality Monitoring Station/Site |
| AERMOD | U.S. EPA-approved atmospheric dispersion model |
| AMS | Automated Measuring System |
| AQM | Air Quality Monitoring |
| AQMS | Air Quality Monitoring Station/Site |
| AST | Annual Surveillance Test |
| BAT | Best Available Techniques, an expression within the IED |
| BATC | BAT Conclusions, the core of a BAT document |
| CEM | Continuous Emissions Monitoring |
| CEMS | Continuous Emissions Monitoring System |
| CEN | French: Comité Européen de Normalisation (European Committee for Standardization) |
| CUSUM | Cumulative sum, a method to monitor drift of instruments |
| DAHS | Data Acquisition and Handling System |
| DeNOx | NOX emissions reduction system (generic) |
| DeSOx | SOX (SO2) emissions reduction system (generic) |
| DOAS | Differential Optical Absorption Spectroscopy – detection principle used in some types of gas analysers |
| ELV | Emission Limit Value |
| EN | European Standard (from German “Europäische Norm”) |
| EPA | Environmental Protection Agency, often on national level, df. U.S. EPA |
| EWMA | Exponentially Weighted Moving-Average |
| HgTOT | See THg |
| IED | Industrial Emissions Directive, an EU regulation |
| IR | Infrared, part of optical spectrum |
| ISO | International Organization for Standardization |
| MCERTS | UK Environment Agency’s Monitoring Certification Scheme for equipment, personnel, and organisations |
| NAAQS | U.S. EPA National Ambient Air Quality Standards |
| mg/m3 | Milligrams per cubic metre |
| ng/m3 | Nanograms per cubic metre |
| ppm | Parts per million |
| ppb | Parts per billion |
| QA | Quality Assurance |
| QAL | Quality Assurance Level, under EN 14181 and EN 15267-3 standards |
| QC | Quality Control |
| SCR | Selective Catalytic Reduction, a flue gas cleaning method |
| SNCR | Selective Non-Catalytic Reduction, a flue gas cleaning method |
| SRM | Standard Reference Method |
| TDL | Tuneable Diode Laser – a light source used in some types of gas analysers |
| THC | Total Hydrocarbons |
| THg | Total mercury, generic term for atomic mercury and mercury compounds such as methyl mercury |
| TOC | Total Organic Carbon |
| TRS | Total Reduced Sulfur |
| TÜV | German: Technischer Überwachungsverein (Technical Inspection Association) |
| U.S. EPA | United States Environmental Protection Agency |
| UV | Ultraviolet, part of optical spectrum |
| µg/m3 | Microgram per cubic metre |
| VOC | Volatile Organic Compounds |
| WHO | World Health Organization |