Nanomaterial effects on C. elegans lifespan

Nanomaterial: MWNT-15-5: Multi-walled carbon nanotubes
Concentration: 1.04 µg/cm² (dispersant: Tannic acid).
Control: Tannic acid (3.333 µg/mL Agar)
Date: 2013-07-01, by: Charles, Alma
Test Method

Worm survival curve.

  Worm lifespan
average (days)
S.D. n p value
(LogRank test)
Control 14 4.5 1555 -
Nanomaterial 13.3 3.2 92 0.015

Raw Data.

  Well  Lifespan Number of living worms on each day
Avg. Median 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Control 1 13.5 13        
2 13.9 13          
3 13.8 14    
4 14.8 14
5 15.4 14    
6 14.4 14        
7 14.5 14  
8 14.8 14        
9 13.5 13        
10 13.6 13        
11 14.8 14    
12 16.4 15    
13 14.6 14          
14 13.9 13        
15 15.4 15 54    
16 15.5 15    
17 14.2 15        
18 13.8 14    
19 11.5 12          
20 13 13                
21 14 14    
22 13.6 13                
23 12.8 13          
24 12 12 63 48 0            
25 12.5 12 68 54        
Nanomaterial 1 13.1 14                
2 13.4 14 46