Table 1 Arrangement and results of the orthogonal cleaning experiment
From: Cleaning iron rust compounds from cotton textiles: application to Qing Dynasty armor
Factor | A. Ascorbic acid (g/L) | B. EDTA-2Na (g/L) | C. Surfactant (g/L) | ΔE |
|---|---|---|---|---|
Level | ||||
1 | 9.0 | 7.0 | 7.0 | |
2 | 10.0 | 8.5 | 8.0 | |
3 | 11.0 | 10.0 | 9.0 | |
Trial No. | ||||
1 | 1 | 1 | 1 | 46.61 |
2 | 1 | 2 | 2 | 52.96 |
3 | 1 | 3 | 3 | 53.81 |
4 | 2 | 1 | 2 | 48.92 |
5 | 2 | 2 | 3 | 54.03 |
6 | 2 | 3 | 1 | 55.46 |
7 | 3 | 1 | 3 | 48.36 |
8 | 3 | 2 | 1 | 54.36 |
9 | 3 | 3 | 2 | 56.19 |
K1 | 51.13 | 47.96 | 52.14 | |
K2 | 52.80 | 53.78 | 52.69 | |
K3 | 52.97 | 55.15 | 52.07 | |
R | 1.84 | 7.19 | 0.62 |