Concept
mass_concentration_of_chlorophyll_a_in_sea_water
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CF14N7/1/ | |
|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | |
| Alternative Labels | ||
| Definition | 'Mass concentration' means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. Chlorophyll is the green pigment found in most plants, algae and cyanobacteria. The presence of chlorophyll is essential for photosynthesis to take place. There are five different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Chlorophyll-a is the most commonly occurring form of natural chlorophyll. The chemical formula of chlorophyll-a is C55H72O5N4Mg. | |
| Date | None | |
| Identifier | CF14N7 | |
| Note | accepted | |
| Is Version Of | CF14N7 | |
| version | 1 | |
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