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Environmental Sciences Europe

Table 6 EC values (and 95 % confidence interval in parentheses) for both types of TiO2 nanoparticles dispersed by 1 min stirring followed by 3 min ultrasonication

From: TiO 2 nanoparticles – Relationship between dispersion preparation method and ecotoxicity in the algal growth test

EC-values

Smaller TiO2 particles

Larger TiO2 particles

 

Growth rate

Yield

Growth rate

Yield

EC20–24 h [mg/L]

Highest inhibition below 20 %

51.5 (43.2–62.1)

1.9 (0.9–2.2)

1.0 (0.4–1.8)

EC50–24 h [mg/L]

Highest inhibition below 50 %

Highest inhibition below 50 %

18.4 (14.3–23.1)

10.8 (7.8–14.0)

EC20–72 h [mg/L]

16.5 (11.1–21.6)

6.4 (4.4–8.3)

29.8 (27.5–31.9)

8.6 (7.0–10.1)

EC50–72 h [mg/L]

Highest inhibition below 50 %

19.7 (16.4–23.3)

Highest inhibition below 50 %

31.8 (28.8–35.2)

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