{"refrec":{"BRefID":121763,"RR":"<b>Nelson, A.</b> (1985). Voltammetric measurement of copper(II)/organic interactions in estuarine waters. <i>Anal. Chim. Acta 169</i>: 287-298","BEntID":115858,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Anal. Chim. Acta 169</i>: 287-298","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":1,"TerrestrialFlag":0,"Authorstring":"Nelson, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Nelson, A.","Englishabstract":"The voltammetry of copper in organic ligand/chloride media is dominated by the formation of CuCl-2 species and by induced adsorption of Cu(I) in organic coatings on the electrodes. These phenomena are utilised in a novel method for evaluating Cu(II)/organic ligand interactions, based on the principle of ligand exchange. The Cu(II)/organic species competes with glycine which forms copper glycinate. These two complexes can be distinguished voltammetrically: copper glycinate gives a higher surface excess of copper at a gelatin-coated hanging mercury drop electrode, partly because of the increased production of CuCl-2 from copper glycinate at the electrode surface. The method proved satisfactory for pure ligand/surfactant/chloride media and for estuarine waters. It is shown that there are two type of Cu(II)-binding ligand in estuarine waters: humic material (> 10-6 mol l-1, assuming 1:1 site binding) with polyelectrolyte-type binding, and discrete ligands ( 10-6 M) with stability constants around 109. The extent of Cu(II) binding by the humic material decreases down the estuary because of dilution and increased salinity.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Voltammetric measurement of copper(II)/organic interactions in estuarine waters","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1985,"MonPub":null,"DateUpdate":"2014-08-20","DateCreate":"2008-04-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":121763,"PubliDate":1985,"Pagination":"287-298","XtraPublOfAnaID":null,"ISBN":null,"Volume":"169","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42099,"SerRR":"Analytica Chimica Acta. 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