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:

Study links high levels of cadmium and lead in blood to pregnancy delay | EVISA's News
Link database: Toxicity of Mercury
ICHMET 2016: 18th International Conference on Heavy Metals in the Environment | EVISA's Agenda of Events
The effect of thermal treatment on the arsenic speciation in food | EVISA's News
ISBOMC' 08: 4th International Symposium on Bioorganometallic Chemistry | EVISA's Agenda of Events
17th Annual Goldschmidt Conference | EVISA's Agenda of Events
Herbal remedies may cause harm | EVISA's News
XIII Int. Conf. on Heavy Metals in the Environment | EVISA's Agenda of Events
Too many dental amalgam fillings may increase mercury levels | EVISA's News
Link database: Blacksmith Institute: Chromium pollution
Scientists reveal how organic mercury can interfere with vision | EVISA's News
Link database: USGS: Statistics and Information: Thallium
Dissension on the best way to fight mercury pollution | EVISA's News
Link database: Mercury concentrations in the Canadian population, 2007 to 2009
ICHMET 2018: 19th International Conference on Heavy Metals in the Environment | EVISA's Agenda of Events
Link database: Blacksmith Institute: Industrial Estates - Lead Pollution
Cadmium in chocolate: New EU regulation enter into force 1 January 2019 | EVISA's News
New study shows: Coastal water, not sediment, predicts methylmercury bioaccumulation in the marine food web | EVISA's News
Dietary mercury exposure: Mercury isotopes can tell the source | EVISA's News
Huge field experiment for assessing human ethylmercury risk starting in october | EVISA's News