Heavy metals definition

Heavy metals means, for the purposes of Section 9.4 of the Act, elemental, ionic, or combined forms of arsenic, cadmium, mercury, chromium, nickel and lead.
Heavy metals means those metals or, in some cases, metalloids which are stable and have a density greater than 4.5 g/cm3 and their compounds;
Heavy metals means metallic elements with higher molecular weights and at certain concentrations, some of these elements may present health risks to humans and animals and may be toxic to plants.

Examples of Heavy metals in a sentence

  • Heavy metals such as cadmium, lead, mercury and chromium (VI).The findings are meant to highlight the current level of use (at times also unintentional) of the above chemical groups through a comparison of the incoming, UNTREATED wastewaters (i.e. samples are collected upstream of any wastewaters treatment plant) and treated wastewater (if there is.

  • Neither Party is an agent, representative or partner of the other Party.

  • Limit tests for Arsenic, Chloride, Sulfate, Iron and Heavy metals.

  • Quality control of Drugs and Pharmaceuticals-Importance of quality control, significant errors, methods used for quality control, sources of impurities in Pharmaceuticals, Limit tests for Arsenic, chloride, sulphate, Iron and Heavy metals.

  • Heavy metals as lead (as Pb), not more than 10 parts per million.


More Definitions of Heavy metals

Heavy metals means element with very substantial atomic weight including lead and mercury;
Heavy metals means lead and arsenic. The department may
Heavy metals means lead, cadmium, mercury and hexavalent chromium;
Heavy metals means the total of antimony, arsenic, cadmium, lead, mercury and vanadium and their respective compounds where the metal and the respective compounds are expressed as the metal in each case.
Heavy metals. As secondary batteries often use oxides from so-called xxxx- sition metals (cobalt, nickel, manga- nese), ashes and smoke in case of fire can be expected to contain powdery reaction products or residues, some of which are hazardous to health (cobalt) or toxic (nickel). An exposition to 25 mg of cobalt compounds may cause skin, lung and stomach diseases, damage to liver, heart, and kidneys as well as cancer in human beings. Inhaling nickel compounds increases the risk of devel- oping carcinoma in the lungs and the upper respiratory tract. Inflammable components: Some of the materials used in lithium batteries and of the individual battery compo- nents are combustible and highly in- flammable. Parameters which are im- portant for fire protection, such as flash point, ignition temperature, and com- bustion heat, point to a high fire load of the electrolyte materials used in lithium ion batteries. In most cases, the liquid electrolyte consists of inflammable or- ganic solvents and a conducting salt. Organic solvents used in lithium batter- ies are usually highly inflammable and capable of forming explosive mixtures with air. The conducting salt lithium hex- afluorophosphate (LiPF6): As com- pounds containing fluorine and/or phos- phorus (e.g. the conducting salt used in most cases: lithium hexafluorophos- phate (LiPF6)) are used in lithium bat- teries, unspecific gaseous substances may be released in case of fire; these toxic substances which are then con- tained in the smoke may constitute a serious hazard to people and the envi- ronment. These compounds are highly hygroscopic, so that the tiniest amount of water (if atmospheric moisture en- ters into a burst cell body, for example) may trigger chemical reactions which may result in the formation of hydro- fluoric acid (HF) and phosphoric acid (H3PO4). Phosphoric acid (H3PO4) is strongly hygroscopic and has an irritant or xxxxx- sive effect on the eyes, the respiratory tract, and the skin; if ingested, it causes damage to the gastro-intestinal tract. Hydrogen fluoride/hydrofluoric acid (HF) is a colorless gas (pungent odor, highly toxic, corrosive, and strongly hy- groscopic) and causes adverse health ef- fects already at the slightest concentra- tions (1.4 ppm) and serious or permanent damage (IDLH value: 30 ppm). In a reac- tion with water (e.g. fire extinguishing water), hydrofluoric acid (corrosive and irritant effect on mucous membranes and skin, risk of severe damage to eyes and lungs, disorders of meta...
Heavy metals. Metals like mercury, zinc, copper, and cadmium usually enter the water supply as industrial waste and, in excessive concentrations, can cause physiological damage to humans, including damage to the central nervous system. Radium/Radon: Naturally occurring radioactive elements such as radium and radon have been linked to cancer in humans. Radon is found in gaseous form, and is absorbed through drinking, as well as through inhalation during washing or showering.
Heavy metals means Antimony (Sb), Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb), Mercury (Hg), Nickel (Ni),