Precursor Compounds that change chemically or physically after being emitted into the air and eventually produce air pollutants. For example, sulfur and nitrogen oxides are precursors for particulate matter.

The term "precursor" was found in the following pages:

Link database: Australian Government: National Pollutant Inventory: Manganese & compounds
Instrument database: Thermo Scientific - TSQ Quantum XLS Ultra™ GC-MS/MS
Toxicity of arsenic species | EVISA's News
Triple Quad ICP-MS: Pushing the limits for quantitation of phosphorus and sulfur | EVISA's News
Instrument database: Thermo Scientific - Q Exactive™ Plus Hybrid Quadrupole-Orbitrap™ Mass Spectrometer
Instrument database: Bruker Daltonics - HCTultra
Instrument database: Bruker Daltonics - ultrOTOF-Q - ESI-Q-q-TOF
Instrument database: Shimadzu Europe - LCMS-IT-TOF™ Mass Spectrometer
EU approves new selenium compound for use as a nutritional supplement in animals | EVISA's News
Instrument database: Bruker Daltonics - micrOTOF-Q III
Arsenic-Containing Phosphatidylcholines Discovered in Herring Caviar | EVISA's News
Instrument database: Varian Inc. - 1200 and 1200L Triple Quadrupole GC/MS
Instrument database: Shimadzu Europe - AXIMA Confidence - MALDI
Instrument database: Waters Corporation - Quattro micro GC
Instrument database: Thermo Scientific - Orbitrap Eclipse Tribrid Mass Spectrometer
Instrument database: Kratos Analytical - AXIMA QIT MALDI TOF Mass Spectrometer
Symposium on Air Quality Measurement Methods and Technology | EVISA's Agenda of Events
Instrument database: Thermo Scientific - Q Exactive™ HF - Hybrid Quadrupole-Orbitrap Mass Spectrometer
Company database: International Society for Preventive Oncology