- trace metals
- • металлы m pl рассеянные
Metallurgy dictionary. 2015.
trace metals
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Trace metal — Trace metals are metals in extremely small quantities, almost at the molecular level, that reside in or are present in animal and plant cells and tissue. They are a necessary part of good nutrition, although they can be toxic if ingested excess… … Wikipedia
trace metal — /ˈtreɪs mɛtl/ (say trays metl) noun one of a number of metals that are present in animal and plant cells in extremely small quantities …
Heavy metals — Metallic elements, including those required for plant and animal nutrition, in trace concentration but which become toxic at higher concentrations. Examples are mercury, chromium, cadmium, and lead. U.S. Dept. of Energy, Energy Information… … Energy terms
Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… … Wikipedia
soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
ion-exchange reaction — ▪ chemical reaction Introduction any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… … Universalium
Copper in health — Normal absorption and distribution of copper. Cu = copper, CP = ceruloplasmin, green = ATP7B carrying copper. Copper is an essential trace element that is vital to the health of all living things (humans, plants, animals, and microorganisms). In… … Wikipedia
Boletus edulis — Boletus edulis … Wikipedia
Purified water — Bottle for Distilled water in the Real Farmacia in Madrid Purified water is water from any source that is physically processed to remove impurities. Distilled water and deionized (DI) water have been the most common forms of purified water, but… … Wikipedia
Metalloid — 13 14 15 16 17 2 B Boron … Wikipedia
Algae fuel — might be an alternative to fossil fuel and uses algae as its source of natural deposits. Several companies and government agencies are funding efforts to reduce capital and operating costs and make algae fuel production commercially viable.[1]… … Wikipedia
