Chemistry


Electrical conductivity

Updated on 26/10/2022
Définition
Sens technique
Indirect indicator of the concentration of soluble ions ("mineral salts") in water, in relation with the environments it passes through and its residence time.
Source
according to BRGM and OFB

Microbial eco-toxicology

Updated on 25/02/2019
Définition
Sens commun
Science that studies the ecological consequences of physical, chemical pollution   or biological, regarding microbial communities, and the many functions they perform in ecosystems, as well as the   role   of & nbsp; microorganisms   in & nbsp; the   dynamics   of   pollutants   (source,   transfer,   degradation, transformation). Microbial eco-toxicology (Ecotoxicomic) is an emerging science that responds to a strong political and societal demand in relation to environmental concerns (pollution removal, indicators of the status of an ecosystem) and public health.
Source
according to CNRS

Organic micropollutant

Updated on 25/02/2019
Définition
Sens commun

Organic active ingredient, usually synthesized by the chemical industry, whose accumulation, even at low concentrations, can be toxic. The main organic micropollutants controlled are volatile organic compounds (VOC), hydrocarbons, andpolychlorinated biphenyl(PCB).

Source
According to Seine-Normandie Water Agency

Mineral micropollutant

Updated on 25/02/2019
Définition
Sens commun

Mineral active product, mainly metals or metalloids, whose accumulation, even at low concentrations, affects the environment and organisms. The main mineral micro pollutants controlled (from both natural and anthropical occurrence) are cadmium, mercury, copper, chromium, zinc, nickel, lead, etc.

Source
According to Seine-Normandie Water Agency

Macropollutants

Updated on 25/02/2019
Définition
Sens commun

All the suspended material in water, organic matter or nutrients, such as nitrogen or phosphate. They may occur naturally in water but their concentration increases with human activities (wastewater discharge, agriculture...). In contrast to micropollutants, which are toxic even at low concentration, macropolluants requires higher content to cause bad effects.

Source
According to SOeS

Analysis

Updated on 25/02/2019
Définition
Sens technique

Methodical review allowing both to identify and quantify the different components of water, but also to evaluate its characteristics and state, according to specific criteria. This review is based on the following of specific protocols adapted to the various controlled parameters.

Source
according to IOWater

Water salinity

Updated on 06/09/2018
Définition
Sens commun
Amount of salts dissolved in water.
Source
according to Wikipedia

Sampling point

Updated on 26/10/2022
Définition
Sens commun
Place of collection of water samples for analysis.
Source
according to OFB

Photosynthesis

Updated on 06/09/2018
Définition
Sens commun
The ability of plants to consume carbon dioxide from the air, to assimilate carbon compounds and to release oxygen.
Source
according to IFREMER

Water neutralisation

Updated on 06/09/2018
Définition
Sens commun
Process to reduce the pH of water (by acidification or alkalisation) to a value determined according to the needs.
Source
according to ADEME