List of Articles Cu(II) Open Access Article Abstract Page Full-Text 1 - Solid Phase Extraction of Amount Cu(II) Using C18 Disks Modified Schiff Base-Chitosan Grafted Multiwalled Carbon Nanotubes Open Access Article Abstract Page Full-Text 2 - Dispersive Solid Phase Extraction of trace Cu(II) in water samples by synthesis modify Multi walled carbon nanotubes carboxylate