"SDN:P07::A11Z9FG9" . . "mass_concentration_of_chlorophyll_c4_in_sea_water"@en . "\"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 species or biological group denoted by X may be described by a single term such as \"nitrogen\" or a phrase such as \"nox_expressed_as_nitrogen\". Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several 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."@en . "1" . "2023-02-06 17:17:13.0" . "false" . "SDN:P07::A11Z9FG9" . "" . . "accepted"@en . . . . "SDN:P07::A11Z9FG9" . . "1" . "2023-02-06 17:17:13.0" .