Solvent extraction, spectrophotometric determination of copper (II) from environmental samples using o-methylphenyl thiourea as a novel reagent Journal title: Eurasian Chemical Communications Authors: Shashikant Raghunath Kuchekar, Shivaji D. Pulate, Haribhau R. Aher, Vishvas B. Gaikwad, Sung H. Han Subject(s): Chemistry, Multidisciplinary, Chemistry, Organic