List of Articles preconcentration Open Access Article Abstract Page Full-Text 1 - Determination of Trace Amount of Zn2+ Ion in soil, blood and vegetable and water samples by Flame Atomic Absorption Spectrometry After Cloud Point Extraction Using Selective Synthesis Ligand2-(3- indolyl) – 4,5 di phynyl imidazole. gholamhossein vatankhah hboube ebrahimi darush jafari