Nanomaterial effects on C. elegans lifespan

Nanomaterial: TiO2 nanotube: Titanium dioxide nanotubes
Concentration: 1.04 µg/cm² (dispersant: DI water).
Control: DI Water
Test Method

Trial 1
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.28 160 -
Nanomaterial 1 0.24 118 0.90
Trial 2
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.43 602 -
Nanomaterial 0.87 0.35 127 0.00011
Trial 3
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.29 1564 -
Nanomaterial 1.04 0.27 68 0.44
Trial 4
  Worm lifespan
average (normalized)
S.D. n p value
(LogRank test)
Control 1 0.36 2811 -
Nanomaterial 0.96 0.29 168 0.0034