Table 3 1H NMR analysis of the water-rich separated layer, obtained starting from 30% v/v THF-70% v/v DI water mixtures, and either 0.125 M or 1 M lauric acid.

From: Decontamination of water co-polluted by copper, toluene and tetrahydrofuran using lauric acid

Sample pH

THF in water layer (% v/v)

water in water layer (% v/v)

Acidic, 0.125 M

24.2 ± 0.4

75.8 ± 0.4

Acidic, 1 M

13.4 ± 0.6

86.6 ± 0.6

Circum-neutral, 0.125 M

24.2 ± 0.4

75.8 ± 0.4

Circum-neutral, 1 M

13.6 ± 0.2

86.4 ± 0.2

Basic, 0.125 M

24.5 ± 0.5

75.5 ± 0.2

Basic, 1 M

14.0 ± 0.1

86.0 ± 0.1

  1. Samples were centrifuged before analyzing each layer.