Research Article
Host–Guest Extraction of Heavy Metal Ions with p-t-Butylcalix[8]arene from Ammonia or Amine Solutions
Figure 3
Effect of the organic solvent (nitrobenzene, dichloromethane, or chloroform) on the extraction percentage of Ni2+ with H8L. p-calix = 5 × 10−4 M; aqueous phase [metal ion]: = (●) 5 × 10−5 M. succinic acid = 0.01 M and buffer solution, O/A = 1; T = 25°C.