Host–Guest Extraction of Heavy Metal Ions with<i> p</i>-<i>t</i>-Butylcalix[8]arene from Ammonia or Amine Solutions

<div>Metal ions percentage extraction (E%) at pH 11.5 by H<sub>8</sub>L-ester. O/A = 1; T = 25°C.</div>

International Journal of Analytical Chemistry

Figure 11: Host–Guest Extraction of Heavy Metal Ions with<i> p</i>-<i>t</i>-Butylcalix[8]arene from Ammonia or Amine Solutions 