
Keywords: عجایب هفتگانه; Natural polysaccharides; Seawater; Electroanalysis; Exopolymers; Copper ions; Complexation; Surface active substances; κ-Carrageenan (PubMedCID: 11966249); Na-alginate (PubMedCID: 6850754); Chondroitin sulfate (PubMedCID: 53477710); Dextran (PubMedCID: 5