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. 2020 Dec 10;9(12):1748. doi: 10.3390/plants9121748

Table 1.

Effects of three sizes of TiO2 particles on the pigment of S. obliquus after 72 h exposure. Different letters following values in the same row represent significant difference (Tukey’s HSD, p < 0.05). Values are represented as means ± SD (n = 3). Chlorophyll a (Chl a), Chlorophyll b (Chl b) and Carotenoid (Car) contents are expressed as 10−13 g/cell.

Pigment Control Bulk TiO2 50 nm-TiO2 10 nm-TiO2
Chl a 8.80 ± 2.81 a 8.15 ± 1.16 a,b 3.91 ± 2.06 b,c 3.29 ± 0.16 c
Chl b 2.58 ± 0.83 a 2.58 ± 0.24 a 1.79 ± 0.96 a 1.30 ± 0.20 a
Car 6.75 ± 1.85 a 6.43 ± 0.61 a 3.87 ± 1.43 a 3.87 ± 0.28 a
Chl b/Chl a 0.29 ± 0.01 a 0.32 ± 0.02 a 0.45 ± 0.06 b 0.40 ± 0.08 a,b
Car/Chl a 0.78 ± 0.04 a 0.79 ± 0.04 a 1.04 ± 0.14 b 1.17 ± 0.03 b