Determination of copper complexation in seawater using flow injection analysis with chemiluminescence detection

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Zamzow, H., Coale, K. H., Johnson, K. S., & Sakamoto, C. M. (1998). Determination of copper complexation in seawater using flow injection analysis with chemiluminescence detection. Analytica Chimica Acta, 377(2), 133-144. doi:10.1016/S0003-2670(98)00618-7
Metadata
TitleDetermination of copper complexation in seawater using flow injection analysis with chemiluminescence detection
AuthorsH. Zamzow, H. Coale, S. Johnson, M. Sakamoto
AbstractFlow injection analysis with chemiluminescence detection (FIA-CL) via the reaction of copper with 1,10-phenanthroline was used for the determination of copper complexation in seawater. A detection limit of 0.1nM Cu in undiluted seawater without sample preconcentration was obtained. Copper speciation was assessed by titrating natural seawater ligands with added copper. This method was used to measure copper complexation throughout the water column in Monterey Bay, California. Two ligand classes were identified: a strong ligand (L1), ranging in concentration from 1.3 to 3.1nM, and a weaker ligand (L2), ranging from 9.4 to 25.6nM. The average conditional stability constant for the strong ligand was logK1' 13.1±0.4 and for the weaker ligand logK2' 9.4±0.6. These measurements are in good agreement with complexation studies previously performed using established methods. This technique may eventually be adapted for in situ complexation measurements that can be used to monitor natural spatial and temporal variations in copper complexation, as well as coastal ecosystem responses to urban and industrial change.
JournalAnalytica Chimica Acta
Date1998
Volume377
Issue2-3
Start page133
End page144
ISSN00032670
Subjectscopper, sea water, chemoluminescence, complex formation, conference paper, drug determination, flow kinetics, priority journal, technique, water analysis
NoteCited By (since 1996):33, CODEN: ACACA

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