The addition of hydrogen, removal of oxygen, or addition of electrons to an element or compound.

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

Report Finds Mercury Contamination Permeates Wildlife Systems | EVISA's News
Huge Amounts of Toxic Mercury Found Hidden in the Arctic Permafrost | EVISA's News
Component database: Marathon Scientific Consultants Inc. - MSIS - Multimode Sample Introduction System
Company database: American Association of Poison Control Centers
Accurate determination of hexavalent chromium in agricultural soil | EVISA's News
Link database: Chemical Fact Sheet: Technetium
OSHA consults on extension to hexavalent chromium standards | EVISA's News
Instrument database: SCP Science - NOVAWAVE FA Automated Microwave Digestion System
3rd Forensic Isotopic Ratio Mass Spectrometry Conference | EVISA's Agenda of Events
Link database: ASTM METHOD D5257 - Chromium, Hexavalent, in Water by Ion Chromatography
FDA Approves Chromium Claim | EVISA's News
Component database: New Wave Research, Inc. - GLITTER - Data Reduction Software for the Laser Ablation Microprobe
USGS Study Reveals Mercury Contamination in Fish Nationwide | EVISA's News
Instrument database: Bruker Daltonics - micrOTOF - benchtop ESI-TOF MS
EU proposes to ratify international Minamata Convention meant to protect citizens from mercury pollution | EVISA's News
Tools for elemental speciation
Link database: Chemical Fact Sheet: Tungsten
Instrument database: Austin AI, LLC - TX2000 Energy Dispersive X-Ray Fluorescence Spectrometer
Instrument database: DURATEC ANALYSENTECHNIK GmbH - Preparative pump 1521
Link database: EPA Method 3060A: Alkaline Digestion for Hexavalent Chromium