HEAVY METALS

Definition: HEAVY METALS

HEAVY METALS

1. (Chem.), the metallic elements not included in the groups of the alkalies, alkaline earths, or the earths; specifically, the heavy metals, as gold, mercury, platinum, lead, silver, etc.

Source: Webster's Revised Unabridged Dictionary (1913)

Domain	Definitions
Environment	Metallic elements with high atomic weights; (e.g. mercury, chromium, cadmium, arsenic, and lead); can damage living things at low concentrations and tend to accumulate in the food chain. (references)
Mining	In exploration geochemistry, principally zinc, copper, cobalt, and lead, but under special conditions including one or more of the following metals: bismuth, cadmium, gold, indium, iron, manganese, mercury, nickel,palladium, platinum, silver, thallium, and tin. (references)
Source: compiled by the editor from various references; see credits.

The heavy metals are a group of elements between copper and mercury on the periodic table of the elements -- having atomic weights between 63.546 and 200.590 and specific gravities greater than 4.0. Living organisms require trace amounts of some heavy metals, including cobalt, copper, iron, manganese, molybdenum, vanadium, strontium, and zinc, but excessive levels can be detrimental to the organism.

In medical usage, the definition is considerably looser, and "heavy metal poisoning" can include excessive amounts of manganese, aluminum, or beryllium as well as the true heavy metals.

Crosswords: HEAVY METALS

English words defined with "HEAVY METALS": anvil, atomic number 83 ♦ Bi, bismuth ♦ Stellite. (references)

Specialty definitions using "HEAVY METALS": Chinese ladder brake fern ♦ Heavy Metal Poisoning, Nervous System ♦ Metallothionein, mill scale, mill-scale ♦ Spectroscopy, Mossbauer. (references)

Domain	Title
Books	Analytical Aspects of Mercury and Other Heavy Metals in the Environment (Current Topics in Environmental and Toxicological Chemistry) (reference) Heavy metals in the aquatic environment : proceedings of the international conference held in Nashville, Tennessee, December 1973 (reference) Mercury, Cadmium, Lead: Handbook for Sustainable Heavy Metals Policy and Regulation (Environment & Policy, V. 31) (reference) (more book examples)
Source: compiled by the editor from various references; see credits.

Thumbnail	Description & Credit
	Courier GulchX-ray fluorescence spectrometer being used to analyze how many heavy metals from mining dump are presentShoshone Field OfficeUSRDUpper Snake River District.Credit: Tim Fuller.
Source: compiled by the editor from various references; see credits.

Subject	Topic	Quote
Health		Certain preparations of calcium (e.g., bone meal and dolomite) can have significant contamination with lead and other heavy metals. (references)
Business		In 1999, the Korean National Institute of Environmental Research (NIER) tested incineration ash from local MWIs and the results indicated high levels of heavy metals, prompting additional negative public reaction. (references)
		The groups are oil waste, solvent waste, paint and varnish waste, glue waste, acid and alkaline waste, waste containing cadmium, waste containing mercury, waste containing heavy metals, waste containing cyanide, waste containing PCBs, pesticide waste and laboratory waste. (references)
		Technologies, procedures and equipment for sewage decontamination that recovers heavy metals (the by-products of galvanic processes and etching, plate-making in printing industry, etc.) are studied and developed at the Institute of Applied Chemistry, the Research Institute of Chemistry of St. Petersburg University, the University of Light Industry, "Pigment" Co, and some others. (references)
Economic History	France	Ten -percent growth for 2001 is expected, after two years of double-digit growth -- 14 percent in 1999 and 17 percent in 2000. A need for continuous automatic air ambient analyzers that monitor Volatile Organic Components (VOC), benzene, Polycyclical Aromatic Hydrocarbons (PAH) and heavy metals will also provide market opportunities in the near future. (references)
Source: compiled by the editor from ICON Group International, Inc.; see credits.

Language		Translations for "HEAVY METALS"; alternative meanings/domain in parentheses.
Danish		forureningskontrol med tunge metaller,partikler,aerosoler,kvaelstoffilter,isaer dem der hidroerer fra transportmidler,kraftstationer og andre industrivirksomheder (aerosols, and other industrial plants, in particular those emitted by transport, nitrogen oxides, particles, pollution control of heavy metals, power stations), elektrokemisk fjernelse af tungmetaller (electrochemical removal of heavy metals), blanding af tungmetaller (interdiffusion of heavy metals), affald der indeholder tunge metaller (waste containing heavy metals). (various references)

Dutch		Warenwetregeling Normen zware metalen (Order pursuant to the Commodities Act concerning permitted levels of heavy metals), interdiffusie van zware metalen (interdiffusion of heavy metals), electrochemisch verwijderen van zware metalen (electrochemical removal of heavy metals), bestrijding van verontreiniging door zware metalen, deeltjes, aerosols, stikstofoxyden, in het bijzonder die welke worden uitgestoten door vervoermiddelen, elektriciteitscentrales en andere industriële installaties (aerosols, and other industrial plants, in particular those emitted by transport, nitrogen oxides, particles, pollution control of heavy metals, power stations), afval dat zware metalen bevat (waste containing heavy metals). (various references)

French		lutte contre la pollution par les métaux lourds, les particules, les aérosols, les oxydes d'azote, en particulier ceux qui sont produits par les transports, par les centrales électriques et par les autres installations industrielles (pollution control of heavy metals), interdiffusion des métaux lourds (interdiffusion of heavy metals), Groupe de Travail des stratégies,des polluants organiques persistants et des métaux lourds (Persistent Organic Pollutants and Heavy Metals), déchets contenant des métaux lourds (waste containing heavy metals), élimination électrochimique de métaux lourds (electrochemical removal of heavy metals). (various references)

German		Schwermetalle (heavy metal, metallo-organic compounds). (various references)

Greek		ηλεκτροχημική απομάκρυνση βαρέων μετάλλων (electrochemical removal of heavy metals), απόβλητα περιέχοντα βαρέα μέταλλα (waste containing heavy metals). (various references)

Italian		composto organometallico (metallo-organic compounds). (various references)

Japanese Kanji		重金属 . (various references)

Japanese Katakana		じゅうき�"ぞく. (various references)

Pig Latin		eavyhay etalsmay

Spanish		eliminación electroquímica de metales pesados (electrochemical removal of heavy metals), desechos con contenido de metales pesados (waste containing heavy metals), control de la contaminación por metales pesados, partículas, aerosoles y óxidos de nitrógeno, en particular los emitidos por los medios de transporte, las centrales eléctricas y otras instalaciones industriales (aerosols, and other industrial plants, in particular those emitted by transport, nitrogen oxides, particles, pollution control of heavy metals, power stations). (various references)
Source: compiled by the editor from various translation references.

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-a-e-e-h-l-m-s-t-v-y"
	-2 letters: methylase.
	-3 letters: heavyset, maleates.
	-4 letters: altheas, amylase, eyelash, hamates, hamlets, helmets, hematal, malates, maleate, maltase, malthas, methyls, tamales.
	-5 letters: alates, almahs, almehs, althea, asthma, elates, ethyls, haemal, halest, halmas, halvas, halves, hamals, hamate, hamlet, haslet, heaves, helmet, helves, hyetal, lamest, lathes, leaves, lethes, lysate, malate, maltha, mateys, matsah, mayest, measle, measly, meatal, meetly, metals, methyl, samlet, savate, seemly, shaley, sheave, shelta, shelty, shelve, shelvy, slatey, slavey, sleave, sleety, steamy, steely, stelae, svelte, sylvae, tamale, tamals, tamely, teasel, themes, thymes, valets, vastly, velate, vestal.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.