List of Articles Preconcentration Open Access Article Abstract Page Full-Text 1 - Fabrication of Mesoporous Silica-coated Graphene Oxide by New Method and Application in Solid Phase Extraction for Preconcentration of Cu2+ Ali Moghimi 10.22034/jchr.2018.544218 Open Access Article Abstract Page Full-Text 2 - Separation of Trace Amount Cu (II) Using Octadecyl Silica Membrane Disks - Nano Graphene Modified N, N -disalicylideneethylenediamine Ali Moghimi 10.22034/jchr.2018.544063 Open Access Article Abstract Page Full-Text 3 - Solid Phase Extraction of Trace Copper(II) Using Modified Nano Polyacrylonitrile Fiber A. Moghimi H. Mosalai H. Hashemi Moghadam 10.22034/jchr.2012.543992 Open Access Article Abstract Page Full-Text 4 - Ultra-Trace Determination of Copper and Silver in Environmental Samples by Using Ionic Liquid-Based Single Drop Microextraction-Electrothermal Atomic Absorption Spectrometry J. Abolhasani M. Amjadi E. Ghorbani Kalhor 10.22034/jchr.2018.544036 Open Access Article Abstract Page Full-Text 5 - Extraction and Determination of Pb(II) by Organic Functionalisation of Graphenes Adsorbed on Surfactant Coated C18 in Environmental Sample A. Moghimi S. Yousefi Siahkalrodi 10.22034/jchr.2018.544032 Open Access Article Abstract Page Full-Text 6 - Extraction and Separation of Trace Amounts Lead (П) in Water Samples Using Nano Polyacrylonitril Modified Ethylendiamins Ali Moghimi Hamid Hashemi-Moghaddam 10.22034/jchr.2015.544098 Open Access Article Abstract Page Full-Text 7 - Preconcentration of Zn(II) from Sample Water by Phenyl-iminodiacetic Acid Grafted Multiwalled Carbon Nanotubes A. Moghimi 10.22034/jchr.2018.544002