TERMIUM Plus®

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DECLINE PH [1 record]

Record 1 2002-04-05

English

Subject field(s)
  • Air Pollution
  • Water Pollution
CONT

Studies done in the past two years have shown that acidic snow resulted in severe depression of pH in streams and surface water of lakes during the spring runoff. The maximum increase in hydrogen ion concentration in the ten streams surveyed to date was up to 15 times the annual average. A spring pH depression is coincident with spring spawning of some species of fish and amphibians.

OBS

A pH drop is a sudden pH depression.

French

Domaine(s)
  • Pollution de l'air
  • Pollution de l'eau
CONT

La mesure la plus simple de l'acidification des eaux de surface consiste en une comparaison dans le temps et dans l'espace des mesures de pH. S'il y a acidification, il y a baisse du pH. Par contre, cette baisse de pH constitue la dernière phase de l'acidification. Avant la baisse du pH, il y a eu chute du pouvoir tampon, par conséquent un indicateur des effets réels de l'acidification.

OBS

Une chute de pH est une baisse soudaine du pH.

Spanish

Campo(s) temático(s)
  • Contaminación del aire
  • Contaminación del agua
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