Title : Trace metal ion partitioning at polymer film-metal oxide interfaces: long-period X-ray standing wave study.

Pub. Date : 2005 May 10

PMID : 16032866






3 Functional Relationships(s)
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1 On the alpha-Al2O3(1-102) surface, Pb(II) ions were found to preferentially bind to the PAA coating, even at sub-micromolar Pb(II) concentrations, and to partition increasingly onto the metal oxide surface as the Pb(II) concentration was increased ([Pb(II)] = 5 x 10(-8) to 2 x 10(-5) M, pH = 4.5; 0.01 M NaCl background electrolyte). carbopol 940 submaxillary gland androgen regulated protein 3B Homo sapiens
2 This observation suggests that the binding sites in the PAA coating outcompete those on the alpha-Al2O3(1-102) surface for Pb(II) under these conditions. carbopol 940 submaxillary gland androgen regulated protein 3B Homo sapiens
3 Our results show that the PAA coating was the dominant sink for Pb(II) in all three samples; however, the relative order of reactivity of these metal oxide surfaces with respect to Pb(II) sorption is alpha-Fe2O3(0001) > alpha-Al2O3(1-102) > alpha-Al2O3(0001). carbopol 940 submaxillary gland androgen regulated protein 3B Homo sapiens