heavy metal

A very imprecise term, never defined by any authoritive body, used loosely to refer to both the element and its compounds. It is based on categorization by density, which is rarely a biologically significant property. It is often used as a group name for metals and metalloids that have been associated with contamination and potential toxicity or ecotoxicity. However, the assumption that all so-called "heavy metals" and their compounds have highly toxic or ecotoxic properties is not supported by facts. Even further, the list of "heavy metals" is not clearly defined and has no basis in their chemistry. Even the term "metal" is commonly misused in both toxicological literature and in legislation to mean the pure metal and all the chemical species in which it may exist.

Very often, ther term "heavy metals" is used, based on one of the following "definitions":

The use of the term "heavy metals"  is highly discorouged  by IUPAC.

The term "heavy metal" was found in the following pages:

Dietary mercury exposure: Mercury isotopes can tell the source | EVISA's News
EU ratification propels global Minamata Convention on Mercury into force | EVISA's News
Instrument database: Büchi Labortechnik AG - Digestion Units K-424/K-435
Journals database: Journal of Heavy Metal Toxicity and Diseases
Arsenic-absorbing fern may soak up toxic metal to repel hungry bugs, UF researchers say | EVISA's News
Link database: Toxipedia: Thallium
ICHMET 2016: 18th International Conference on Heavy Metals in the Environment | EVISA's Agenda of Events
Scientists reveal how organic mercury can interfere with vision | EVISA's News
Study links high levels of cadmium and lead in blood to pregnancy delay | EVISA's News
Link database: Toxicity of Mercury
Is methyl mercury limiting the delight of seafood ? - To answer this question is a challenge for elemental speciation analysis | EVISA's News
TraceSpec 2016: 15th Workshop on Progress in Trace Metal Speciation for Environmental Analytical Chemistry | EVISA's Agenda of Events
Instrument database: GAT - Gamma Analysen- Technik GmbH - GAT TEA 4000 MP
Link database: CBI: The Netherlands legislation: Packaging and packaging waste
The effect of thermal treatment on the arsenic speciation in food | EVISA's News
XIII Int. Conf. on Heavy Metals in the Environment | EVISA's Agenda of Events
EMI 2013: EnvironMetal Isotopes: International Conference on „Stable Metal Isotope Fractionation – Processes and Applications in Environmental Geochemistry” | EVISA's Agenda of Events
Too many dental amalgam fillings may increase blood mercury levels | EVISA's News
Uptake of mercury species by fruit flies | EVISA's News
Link database: Blacksmith Institute: mercury pollution