함형철 이동우 홍원희 이태용 이철호 2024-01-21T08:36:21Z 2024-01-21T08:36:21Z 2022-01-10 2003-07 https://pubs.kist.re.kr/handle/201004/138417 Predispersed solvent extraction of negatively complexed copper from water using colloidal liquid aphron containing a quaternary ammonium salt. Article 3 Korean Journal of Chemical Engineering, v.v. 20, no.no. 4, pp.716 - 723 Korean Journal of Chemical Engineering v. 20 no. 4 716 723