Fig. 5

Excitation-emission matrix fluorescence spectra of Spirulina subsalsa medium containing seawater and MSGR, at the beginning of a first use, b second use and c third use. Region A: humic-like substances, Region B: fulvic-like substances
Excitation-emission matrix fluorescence spectra of Spirulina subsalsa medium containing seawater and MSGR, at the beginning of a first use, b second use and c third use. Region A: humic-like substances, Region B: fulvic-like substances