A negatively charged ion.

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

Flow-injection inductively coupled plasma mass spectrometry for speciation analysis | EVISA's News
Determination of Thallium Speciation in Water Samples by HPLC-ICP-MS | EVISA's News
Material database: Sigma-Aldrich - Multicomponent CRM for Ion Chromatography: Multielement Ion Chromatography Anion Standard Solution
Link database: Chemical Transformations of Chromium in Soils: Relevance to Mobility, Bio-availability and Remediation
China: Inorganic Arsenic in Rice - An Underestimated Health Threat ? | EVISA's News
Link database: NEMI: ASTM Method D5257: Chromium, Hexavalent, in Water by Ion Chromatography
Link database: Hazardous Substances Data Bank: Aluminum chloride
Instrument database: Metrohm AG - MIC-2 Advanced - Modular anion system with chemical suppression
High level of inorganic arsenic in blue mussels from Norwegian Fjords | EVISA's News
Instrument database: Dionex Corporation - ICS-2100 Integrated Reagent-Free IC System
New selenium metabolites found in human serum | EVISA's News
Toxic antimony species found in beverages stored in PET containers | EVISA's News
ICP-MS Analysis Suggests Metal-Binding Proteins Significantly More Abundant Than Thought | EVISA's News
High Accumulation of Selenium in Wheat Grains | EVISA's News
Link database: US EPA Method 1636: Determination of hexavalent chromium by ion chromatography
LC-ICP-MS: The most often used hyphenated system for speciation analysis | EVISA's News
Instrument database: YOUNG LIN - quaMAXTM-Basic Water Purification Station
Instrument database: Aurora Biomed - Crysta 1000 Water Purification System
Instrument database: Dionex Corporation - ICS-900 Starter Line IC System
Instrument database: Aurora Biomed - Crysta 500 Water Purification System