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HEXAVALENT CHROMIUM [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-02-15

English

Subject field(s)
  • Chemistry
CONT

Hexavalent chromium(chromium(VI), Cr(VI), chromium 6) refers to chemical compounds that contain the element chromium in the +6 oxidation state.... Hexavalent chromium is used in textile dyes, wood preservation, anti-corrosion products, chromate conversion coatings, and a variety of niche uses.

French

Domaine(s)
  • Chimie
CONT

Le chrome hexavalent ou chrome(VI) est le 6e état d'oxydation du chrome. [...] Le chrome(VI) est dangereux pour la santé, principalement pour les personnes travaillant dans l'industrie de l'acier et du textile. Les personnes qui fument du tabac courent aussi un risque plus important en cas d'exposition au chrome.

Spanish

Save record 1

Record 2 2015-12-01

English

Subject field(s)
  • Pollutants
  • Water Pollution
DEF

A substance which pollutes even in trace concentrations.

CONT

Many pollutants and micro-pollutants liable to be found in water for human consumption can be classified : 1. Mineral pollutants 2. Organic pollutants... 1. Mineral pollutants and micro-pollutants. These includes : toxic substances such as lead, silver, arsenic, fluorine, boron, hexavalent chromium, cyanides, selenium, cadmium, barium, mercury, nickel and so on.

OBS

micropollutant: term and definition standardized by ISO.

French

Domaine(s)
  • Agents de pollution
  • Pollution de l'eau
DEF

Substance qui pollue même à l'état de traces.

OBS

micropolluant : terme normalisé par l'AFNOR.

OBS

micropolluant : terme et définition normalisés par l'ISO.

Spanish

Campo(s) temático(s)
  • Agentes contaminantes
  • Contaminación del agua
DEF

Sustancia que contamina inclusive en concentraciones traza.

Save record 2

Record 3 2006-02-21

English

Subject field(s)
  • Foundry Practice
  • Pollutants
CONT

Electric Arc Furnace Dust (EAF Dust) is the airborne dust generated in the steel manufacturing process when metal scrap is electrically melted. It is typically only about 1.5% of the output from a typical mini-mill, but creates an environmental problem which must be handled intelligently. The material is a calcium iron silicate with contaminants of heavy metals such as lead, zinc, cadmium, chromium and others.

CONT

In a typical electric arc furnace(EAF) operation for melting iron-containing scrap, approximately one to two per cent of the charge is converted into dust which is collected in the baghouse. These EAF dusts have been classified as hazardous wastes due to their lead, cadmium and hexavalent chromium contents; however, these dusts also contain large quantities of zinc and iron whose recovery is economically attractive.

French

Domaine(s)
  • Fonderie
  • Agents de pollution
CONT

Lors de l'opération typique d'un four à arc (EAF) pour la fonte de rebut contenant du fer, approximativement 1 à 2 % de la charge est convertie en poussière qui est récupérée par l'unité de filtration. Ces poussières du four à arc ont été classées comme déchets dangereux à cause de leur contenu en plomb, en cadmium et en chrome hexavalent; cependant, ces poussières contiennent également de grandes quantités de zinc et de fer dont la récupération est économiquement intéressante. Dans le présent travail, on a traité, en vol, de la poussière de four à arc ayant un contenu élevé en zinc [...]

Spanish

Save record 3

Record 4 2001-05-02

English

Subject field(s)
  • Electrometallurgy
  • Chemistry
DEF

Formation of a chromate conversion coating on a metal surface by means of a solution containing chromium compounds in the hexavalent form. [Definition standardized by ISO. ]

OBS

chromating; chromate filming: terms standardized by ISO.

French

Domaine(s)
  • Électrométallurgie
  • Chimie
DEF

Formation d'une couche de conversion au chromate sur une surface métallique par immersion dans une solution contenant du chrome sous forme hexavalente. [Définition normalisée par l'ISO.]

OBS

chromatation : terme normalisé par l'ISO.

Key term(s)
  • traitement à l'acide chromique

Spanish

Save record 4

Record 5 1982-03-30

English

Subject field(s)
  • Wastewater Treatment
CONT

... reduction treatments for hexavalent chromium;...

French

Domaine(s)
  • Traitement des eaux usées
CONT

[...] les traitements par réduction [sont utilisés] pour le chrome hexavalent; [...]

Spanish

Save record 5

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