TERMIUM Plus^®

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,  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,  Textual support,  Spanish