Table 1.

Water relaxation rates for pristine gels and for gels added with mono- and bi-valent salts.

Salt	${\mathit{T}}_{\mathbf{21}}^{\mathbf{-}\mathbf{1}}$ (s−1)	${\mathit{T}}_{\mathbf{22}}^{\mathbf{-}\mathbf{1}}$ (s−1)
NaCl(a)	0.57 ± 0.03	0.88 ± 0.13
CaCl2 (b)	0.59 ± 0.06	1.13 ± 0.06
No Salt	0.69 ± 0.03	—

^(a,b)100 mM salt was added to suspensions of 6 mgmL⁻¹ TOCs sonicated for 240 s.