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GASEOUS CONTAMINANT [2 records]
Record 1 - internal organization data 2012-07-30
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
- Analytical Chemistry
- Environmental Studies and Analyses
Record 1, Main entry term, English
- part per ten million
1, record 1, English, part%20per%20ten%20million
correct
Record 1, Abbreviations, English
- pptm 1, record 1, English, pptm
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The concentration of a contaminant refers to its quantity in the air. For gaseous contaminants, the concentration is expressed as a ratio of the volume of contaminants present in one billion volumes of air, or ppb. A similar unit is the parts per ten million, or pptm. One pptm consists of 100 ppb. For particulates, the concentration is expressed as a ratio of the mass of the particulates present in one cubic metre(m³) of air. The unit used for the mass is the microgram²(or µg), so the concentration is expressed in units of mg/m. 2, record 1, English, - part%20per%20ten%20million
Record number: 1, Textual support number: 2 CONT
Carbon monoxide concentrations are in units of parts per ten million (pptm). 3, record 1, English, - part%20per%20ten%20million
Record 1, Key term(s)
- parts per ten million
- part per ten millions
- parts per ten millions
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
- Chimie analytique
- Études et analyses environnementales
Record 1, Main entry term, French
- partie par dix millions
1, record 1, French, partie%20par%20dix%20millions
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- partie par 107 2, record 1, French, partie%20par%20107
proposal, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'action de ce gaz est telle qu'il en suffit d'une partie par dix millions de parties d'air pour mettre un homme hors de combat dans l'espace d'une minute. 1, record 1, French, - partie%20par%20dix%20millions
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1989-07-31
Record 2, English
Record 2, Subject field(s)
- Air Pollution
- Chemical Engineering
- Metallurgy - General
Record 2, Main entry term, English
- zinc fume
1, record 2, English, zinc%20fume
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Fumes are very small, airborne, solid particles formed by the cooling of a hot vapour. For example, a hot zinc vapour may form when zinc-coated steel is welded. The vapour then condenses to form fine zinc fume as soon as it contacts the cool surrounding air. Fumes are smaller than dusts and are more easily breathed into the lungs. 1, record 2, English, - zinc%20fume
Record number: 2, Textual support number: 1 OBS
There are a least seven forms of particulate matter.... "Fume" : Solid particles generated by condensation from the gaseous state, generally after volatilization from melted substances and often accompanied by a chemical reaction, such as oxidation. Popular usage sometimes includes any type of contaminant. 2, record 2, English, - zinc%20fume
Record 2, French
Record 2, Domaine(s)
- Pollution de l'air
- Génie chimique
- Métallurgie générale
Record 2, Main entry term, French
- fumée de zinc
1, record 2, French, fum%C3%A9e%20de%20zinc
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
"Fumées" : Très petites particules solides en suspension dans l'air qui se forment lorsque de la vapeur chaude se refroidit. Par exemple, il peut se former de la vapeur de zinc chaud lorsqu'on soude de l'acier recouvert de zinc. En entrant en contact avec l'air ambiant plus frais, la vapeur se condense et forme une fine fumée de zinc. Généralement les fumées sont formées de particules plus fines que les poussières et elles pénètrent donc plus facilement dans les poumons. 1, record 2, French, - fum%C3%A9e%20de%20zinc
Record number: 2, Textual support number: 1 OBS
"Fumée" : Ensemble des gaz de combustion et des particules qu'ils entraînent (par extension, s'applique aussi aux gaz chargés de particules provenant d'un processus chimique ou d'une opération métallurgique). Note : Il n'existe pas d'équivalent anglais exact, toutefois, on rencontre des termes voisins dont les définitions sont les suivantes : - "Fume" : Aérosol de particules solides, provenant généralement d'un processus métallurgique, créé par condensation d'un état gazeux habituellement après volatilisation de substances fondues et souvent accompagné de réactions chimiques telles que l'oxydation. "Fumes" (...). "Smoke" (...). [norme AFNOR X43-001]. 2, record 2, French, - fum%C3%A9e%20de%20zinc
Record 2, Spanish
Record 2, Textual support, Spanish
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