Addition of a methyl group to a molecule or atom, either by a microbial activity (biomethylation) or by purely chemical reaction (abiotic methylation).

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

Prenatal Mercury Exposure Cancels Out Cognitive Benefits of Exercise | EVISA's News
Elemental speciation is going commercial | EVISA's News
Directory of scientists: Holger Hintelmann
Ocean mercury on the rise | EVISA's News
Link database: Toxipedia: Mercury
Is methyl mercury limiting the delight of seafood ? - To answer this question is a challenge for elemental speciation analysis | EVISA's News
Most Canadians having dental amalgam in their mouth are exposed to mercury at levels surpassing the reference exposure level (REL) | EVISA's News
Methylmercury: What have we learned from Minamata Bay? | EVISA's News
Link database: Proflux: Processes and fluxes of mercury and methylmercury in a conjtaminated coasta ecosystem (Targus estuary, Portugal)
ERM-CE101: A new CRM for assessing environmental quality through fish | EVISA's News
New research results suggest that mercury hotspots in the northeastern US are home made | EVISA's News
Chemical speciation analysis for life science | EVISA's News
Seabass populations can be differentiated by their Mercury Isotope Distribution | EVISA's News
Link database: Princeton University: Mercury Cycling and Methylation
Bacterial methylation of mercury not only starting from oxidized mercury | EVISA's News
Dietary mercury exposure: Mercury isotopes can tell the source | EVISA's News
Linking atmospheric mercury to methylmercury in fish | EVISA's News
Toxic effects of mercury persists for generations | EVISA's News
Tin and mercury content and speciation in red wine from different countries | EVISA's News
Link database: The LipidWEB: Arsenoilipids