Table 5 Colorimetric differences (ΔL*, Δa*, Δb*) and total color difference (ΔE*ab)

From: Desalination of Hamipterus tianshanensis fossil by electrokinetic method: evaluation for treatment of clay-rich sandstone

 

EMI

EMS

EPI

EPS

ΔL*

5.95

14.03

−1.28

6.91

Δa*

−0.05

−2.26

−0.44

−0.65

Δb*

0.12

−8.31

0.26

−1.52

ΔE*ab

5.95

16.46

1.38

7.10

Risk

H

H

L

H

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