From: Cleaning iron rust compounds from cotton textiles: application to Qing Dynasty armor
Sample | L value | a value | b value | ΔE value |
---|---|---|---|---|
Unstained sample | 30.94 | 0.49 | − 20.75 | – |
Stained sample before cleaning | 38.73 | 8.84 | 23.77 | 45.96 |
Stained sample after cleaning | 30.66 | − 0.14 | − 19.93 | 1.07 |