MEASUREMENT OF MANGANESE, ZINC AND CADMIUM COMPLEXATION IN SEAWATER USING CHELEX ION EXCHANGE EQUILIBRIA WILLIAM G. SUNDA Primary Author mixed material bibliography Amsterdam Marine Chemistry (1984) en English

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hal 365--378 Equilibria between Chelex 100" and manganese, zinc and cadmium ions were used to determine the complexation of these trace metals in 36 %o Gulf Stream seawater at 25Oc and pH 8.2. The method utilized radiotracers (S4Mn, 6SZn, and l°gCd) to quantify trace metal adsorption from trace metal-amended seawater and from seawater containing a series of ethylenediaminetetracetate (EDTA)--metal ion buffers. Results were consistent with Chelex adsorption of both trace metal ions and trace metal--EDTA chelates. Equilibrium models fitted to the data were used to establish conditional stability constants for Chelex adsorption of manganese, zinc and cadmium ions and for adsorption of EDTAchelates. These models also yielded ratios of free metal ions to total dissolved trace metal concentrations in seawater: 10 -°"1 for manganese, 10 -0.2 for zinc, and 10-1.s for cadmium. Independent measurements with a cadmium ion-selective electrode also yielded a free: total cadmium ratio of 10 -1"5. WILLIAM G. SUNDA Lingkungan 551.4601 STIKES Tri Mandiri Sakti Bengkulu PERPUSTAKAAN 551.4601 WIL m B15006572 series_title 551.4601 WIL m MEASUREMENT OF MANGANESE, ZINC AND CADMIUM COMPLEXATION IN SEAWATER USING CHELEX ION EXCHANGE EQUILIBRIA 1-s2.0-S0304420325X00062-cov200h.gif.gif 5905 2026-02-10 12:56:13 2026-05-04 13:46:41 machine generated