Zn→ As↓ | 0 mg/L | 1 mg/L | 2 mg/L | 3 mg/L |
0 mg/L | 6.8 | 7.2 | 11.1 | 10.7 |
0.5 mg/L | 12.3 | 9.5 | 8.1 | 12.7 |
1 mg/L | 10.2 | 9.5 | 9.3 | 8.3 |
2 mg/L | 9.1 | 6.0 | 6.3 | 8.2 |
P value→ | 0.034 | 0.515 | 0.072 | 0.030 |
Comment | significant | not significant | not significant | Significant |