Cytotoxicity Property of Nano-TiO_𝟐 Sol and Nano-TiO_𝟐 Powder

Table 1

Result of macrophage toxicity by MTT assay.

Concentration of nano-TiO2/mg·L^−1		0	2	20	60	100
NP1	Absorbance in 24 h	0.830	0.878	0.930	1.003	1.073
	Viability/%	100	106	112	121	129
NP2	Absorbance in 24 h	0.481	0.246	0.216	0.054	0.073
	Viability/%	100	51	45	11	15
NP1	Absorbance in 48 h	0.690	0.630	0.543	0.418	0.198
	Viability/%	100	91	79	61	29
NP2	Absorbance in 48 h	0.244	0.179	0.115	0.101	0.067
	Viability/%	100	73	47	42	27