Research Article
Corrosion Inhibition Effect of Carbon Steel in Sea Water by L-Arginine-Zn2+ System
Table 4
Distribution of
-value between inhibition efficiencies of various concentrations of L-Arginine Zn
2+.
| | Zn2+ ppm | Source of variance | Sum of squares | Degrees of freedom | Mean square | F | Level of significance |
| | 25 | Between | 933.12 | 1 | 933.12 | 13.808 | P > 0.05 | | Within | 540.6 | 8 | 67.575 |
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