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 Open Access Article Abstract Page Full-Text 2 - Spectrophotometric Determination of Hg2+ after Solid Phase Extraction on Microcrystalline Naphthalene M. Reza Shishehbore Navid Nasirizadeh A. Mohammad Akhoundi