Heavy metals definition

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;

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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 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, due to the low volatility, are present in the bottom ash (removed in the boiler ▇▇▇▇▇▇) and in the fly ash (removed in the ESP).

• Products must also be tested for the following using accredited methods: • Pesticides • Naphthalene • Residual solvents • Heavy metals • Polyaromatic hydrocarbons • Mycotoxins associated with major C.

• G) Fats, wastes, greases or oils; H) Heavy metals; I) Phenols or odour/ taste producing substances; J) Radioactive wastes; K) Any wastes not susceptible to the type of treatment provided; L) Any industrial wastes; M) Any chlorinated matter; N) Any non-biodegradable materials such as sanitary napkins, tampons, tampon applicators, condoms, plastics, diapers etc.; O) Ammonia and ammonia based cleaner, powder laundry detergent and non-biodegradable cleaners; P) Any recreational vehicle waste, in any volume.

• Water used for NP dispersion was obtained from a Millipore water purification system (MilliQ-water) with the following characteristics: resistivity of 18.2 MΩ-cm at 25ºC, pyrogens <0.02 EU/ml, silicates<0.1 ppb, Heavy metals ≤ 0.1 ppb, microorganisms ≤1 cfu/ml.

• The additional provisions under Air Quality Directive 2008/50/EC require a new approach to air quality assessment, including the new pollutants which should be monitored (Heavy metals – As, Hg, Cd, Ni; PM2.5 and PAH).

More Definitions of Heavy metals

Heavy metals means lead, cadmium, mercury and hexavalent chromium;

Heavy metals means element with very substantial atomic weight including lead and mercury;

Heavy metals means lead and arsenic. The department may

Heavy metals. As secondary batteries often use oxides from so-called ▇▇▇▇- 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. 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 Other toxic compounds: Hydrogen phosphides (e.g. phosphine), which are classified as toxic and hazardous to water, may develop out of phospho- rus-containing components. Phosphine may be inhaled and cause severe irri- tations of the respiratory tract, toxic pulmonary edema being the severest consequence of its inhalation. Exposure to special risks in spite of fire detectors: Damaged lithium bat- teries may release toxic substances which are heavier than air (e.g. electro- lyte and solvent vapors, hydrogen chlo- ride from PVC conduits, carbon dioxide) as well as smoke and degradation com- ponents before and during a fire. The heavy components may gather on the floor and are not detected by optical smoke detectors installed on the ceil- ing.

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),

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.