Table 2.

Effect of pH_i on the MT rates, k_mf and k_fm, from the solid pool (with population fraction p_m) to the free water pool (with population fraction p_f) and in the reverse direction, respectively. The third and fourth rows report the correlations between pH_i, [H⁺], and the MT parameter estimates.. Pool size ratio (p_m/p_f) and slow recovery rate ( $R_1^{-}$) are also reported. Statistical tests reflect removal of outlying point and its pair (see Text). Significant findings are indicated with superscripts; the same notation as in Table 1 has been continued here. For means, significance reflects differences from control condition. Note that because k_fm is not an independent measurement, statistics for this variable are not presented.

		Kmf (s−1)	kfm (s−1)	pm/pf	$R_1^{-}$ (s−1)
Mean±SD at pHi ~	7.0	42.88 ± 2.31	3.56 ± 0.42	0.08 ± 0.01	0.68 ± 0.02
	6.5	39.82 a ± 2.71	3.16 ± 0.18	0.08 ± 0.00	0.65b ± 0.02
Correlations with pHi		0.85a (acidic)
		0.78c (control)
		0.76b (all)
Correlations with [H+]		−0.85a (acidic)
		−0.78c (control)
		−0.73b (all)

^ap <0.05;

^bp <0.01;

^cp=0.066.