A negatively charged ion.

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

Arsenic species distribution in drinking water wells in the USA with high arsenic concentrations | EVISA's News
Instrument database: Metrohm AG - MIC-2 Advanced - Modular anion system with chemical suppression
Link database: NEMI: ASTM Method D5257: Chromium, Hexavalent, in Water by Ion Chromatography
Instrument database: Dionex Corporation - ICS-900 Starter Line IC System
Toxic antimony species found in beverages stored in PET containers | EVISA's News
Determination of Thallium Speciation in Water Samples by HPLC-ICP-MS | EVISA's News
High level of inorganic arsenic in blue mussels from Norwegian Fjords | EVISA's News
Chromium speciation in biological tissues | EVISA's News
Instrument database: Metrohm AG - 861 Advance Compact IC with Sequential Compression
Arsenic Species in Seaweeds Commercially Available in the United States | EVISA's News
Arsenic speciation analysis in rice milk | EVISA's News
Instrument database: Dionex Corporation - ICS-1600 Standard Integrated IC System
Instrument database: Thermo Scientific - Orbitrap Eclipse Tribrid Mass Spectrometer
Elusive Hg(IV) species has been synthesized under cryogenic conditions | EVISA's News
Instrument database: Dionex Corporation - ICS-2100 Integrated Reagent-Free IC System
Link database: US EPA Method 1636: Determination of hexavalent chromium by ion chromatography
ICP-MS Analysis Suggests Metal-Binding Proteins Significantly More Abundant Than Thought | EVISA's News
Instrument database: Aurora Biomed - Crysta 2000 Water Purification System
Bromine Speciation in Human Serum | EVISA's News
Link database: Chemical Transformations of Chromium in Soils: Relevance to Mobility, Bio-availability and Remediation