Table 1. Diffusion Coefficient of Nicotine in Different Concentrations of NaCl Solution.

concentration of NaCl (wt %)	diffusion coefficient at room temperature(1012 m2/s)	diffusion coefficient at 70 °C (1012 m2/s)
15	437 ± 76.4	256.2 ± 29.2
20	132.3 ± 11.3	50.8 ± 0.7
25	80.9 ± 1.8	4.3 ± 0.6
26.5	24.7 ± 5.0	7.7 ± 0.2