heavy metal


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Related to heavy metal: Heavy metal music, Death metal

metal

 [met´'l]
any chemical element marked by luster, malleability, ductility, and conductivity of electricity and heat, and which will ionize positively in solution. adj., adj metal´lic.
alkali metal one of a group of monovalent elements including lithium, sodium, potassium, rubidium, and cesium.
metal fume fever an occupational disorder with malaria-like symptoms occurring in those engaged in welding and other metallic operations and due to the volatilized metals. It includes brassfounder's fever (brass chill, brazier's chill) and spelter's fever (zinc chill, zinc fume fever).
heavy metal one with a high specific gravity, usually defined to be above 5.0.
heavy metal poisoning poisoning with any of the heavy metals, particularly antimony, arsenic, cadmium, lead, mercury, thallium, or zinc.
noble metal a metal that is highly resistant to oxidation and corrosion.

heav·y met·al

a metal with a high specific gravity, typically larger than 5, for example, Fe, Co, Cu, Mn, Mo, Zn, V.

heavy metal

a metallic element with a specific gravity five or more times that of water. The heavy metals include antimony, arsenic, bismuth, cadmium, cerium, chromium, cobalt, copper, gallium, gold, iron, lead, manganese, mercury, nickel, platinum, silver, tellurium, thallium, tin, uranium, vanadium, and zinc. Small amounts of many of these elements are common and necessary in the diet. Large amounts of any of them may cause poisoning.
Toxicology A metal that is 5 times heavier than water and often toxic, a feature linked to the heavy metal’s tight cationic binding to circulating proteins
Examples Antimony, arsenic, bismuth, cadmium, copper, lead, mercury; cells respond to heavy metals by upregulating transcription of various genes—e.g., the eukaryotic heat shock system, metallothioneins, prokaryotic mercury resistance gene and iron uptake systems
Management EDTA chelation
Vox populi Metal A style of energetic, loud rock music

heavy metal

Toxicology A metal that is 5 times heavier than water and often toxic, a feature linked to the HM's tight cationic binding to circulating proteins Examples Antimony, arsenic, bismuth, cadmium, copper, lead, mercury; cells respond to HMs by ↑ transcription of various genes–eg, the eukaryotic heat shock system, metallothioneins, prokaryotic mercury resistance gene and iron uptake systems Clinical General, fine tremor, speech slurring, stomatitis, drooling, cataracts, neurasthenia Treatment EDTA chelation. See Mad Hatter, Minamata disease, Queen of Poisons, Pink disease.

heavy metal

any element with an atomic number greater than 20.

Heavy metal

One of 23 chemical elements that has a specific gravity (a measure of density) at least five times that of water.
Mentioned in: Heavy Metal Poisoning

Patient discussion about heavy metal

Q. I was told that platinum is used in fragrances for the fullness of the spray. Please tell me more! Three years ago I was diagnosed with off the lab chart levels of platinum in my body. I have no hobby or avenue for exposure other than my work. I have sold fragrances for over ten years. Even the Regional EPA Air Quality person doesnt know where I am getting this. I was told by a health director who made some calls. He told me that platinum is used in fragrances for the "fullness of the spray". Would you please tell me more about this? Thank you!

A. Thank you Joseph83! What list of materials shall I look at? I know that the FDA doesn't regulate these products; also, I wonder if there is a masking name for platinum. I have so much of this in me, it just has to come from somewhere! I'm amazed that the EPA SUPPOSEDLY doesn't know where its coming from either.

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References in periodicals archive ?
Assessment of heavy metal (Cu, Ni, Fe, Co, Mn, Cr, Zn) pollution in effluent dominated rivulet water and their effect on glycogen metabolism and histology of Mastacembelus armatus.
With regards to our results, the order of heavy metal accumulation in muscle tissue of tiger shrimp was Mg>Fe>Cu>Zn>Mn.
HEAVY METAL LEVELS IN CLARIUS GARIEPINUS ORGANS AND COMPARISON WITH LITERATURE DATA
2005), and with the development of industrialization and urbanization, the study area will suffer a big risk of heavy metal pollution (Huang et al.
By the increased awareness about heavy metals toxicity, there are various techniques being employed to remove them or to make them somewhat less toxic.
The bioconcentration coefficient (BCF) of a heavy metal in the soil can be used to measure how difficult it is for that heavy metal to be absorbed by plants from the soil.
Dans les annees 1970, l'industrie du heavy metal s'est developpee grace aux premieres tournees internationales d'envergure, permettant de mieux cibler les gouts des amateurs selon les regions du monde.
My own heavy metals timeline will shed some light on this:
For experiments examining the effect of UV and heavy metals together on ALP, the enzyme was incubated with 1mM of heavy metal and exposed to UV radiation (254 nm at a distance of 10 cm) for indicated time intervals.
Most young people listen to a range of music in positive ways; to block out crowds, to lift their mood or to give them energy when exercising, but young people at risk of depression are more likely to be listening to music, particularly heavy metal music, in a negative way," the Herald Sun quoted McFerran as saying.
Dynamics and bioavailability of heavy metals in the rootzone.