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

<div>Structure of Cu(en)<sub>2</sub>-H<sub>8</sub>L complex.</div>

International Journal of Analytical Chemistry

Scheme 1: Host–Guest Extraction of Heavy Metal Ions with<i> p</i>-<i>t</i>-Butylcalix[8]arene from Ammonia or Amine Solutions 