Fig. 8From: Applicability of enzymatic and phenol–sulfuric acid methods for determination of cellulose nanofibers in ecotoxicity testingGlucose-equivalent concentration of algae measured by the phenol–sulfuric acid method. Raphidocelis subcapitata (a) and Chlorella vulgaris (b) were measured using the phenol–sulfuric acid method. Error bars: standard deviations (n = 3–5)Back to article page