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Environmental Sciences Europe
Fig. 1 | Environmental Sciences Europe

Fig. 1

From: Testing particles using the algal growth inhibition test (OECD 201): the suitability of in vivo chlorophyll fluorescence measurements

Fig. 1

In vitro and in vivo chlorophyll measurements for nanoparticles and microparticles, focusing on compliance with the OECD TG 201 validity criteria. A Validity criterion “biomass increase within the 72-h test period” threshold value ≥ 16. B Validity criterion “mean coefficient of variation (CoV) for section-by-section specific growth rates” threshold value ≤ 35%. C Validity criterion “coefficient of variation (CoV) of average specific growth rates” threshold value ≤ 7%. Solid line: validity criterion (threshold value). 1 Cu_fibre; 2 TiO2_fibers; 3 SiC_thin; 4 Ag-ES-4; 5 PMMA; 6 PE_broad distribution; 7 PA-6; 8 IN718; 9 Ti64; 10 IN-Y2O3; 11 Ti64-SiC

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