Determination of the apparent copper complexing capacity of seawater by anodic stripping voltammetry

作者: Marta Plavšić , Damir Krznarić , Marko Branica

DOI: 10.1016/0304-4203(82)90045-7

关键词: Inorganic chemistrySeawaterCopperAnalytical chemistryElectrolyteAnodic stripping voltammetryElectrodeDropping mercury electrodeMixing (process engineering)Deposition (phase transition)Chemistry

摘要: Abstract A new experimental technique using differential pulse anodic stripping voltammetry with a thin-film mercury electrode and efficient mixing of the electrolyte for apparent copper complexing capacity seawater is proposed. The effects some factors such as type cell, pH solution, potential deposition, time equilibration, influence non-ionic surface active agent on measurements are examined. Experimental results calculated presuming 1:1 inert complex formation. By EDTA model ligand, it shown that proposed procedure solution excludes any appreciable kinetic upon electroanalytical results.

参考文章(27)
M. Gnassia-Barelli, M. Romeo, F. Laumond, D. Pesando, Experimental studies on the relationship between natural copper complexes and their toxicity to phytoplankton Marine Biology. ,vol. 47, pp. 15- 19 ,(1978) , 10.1007/BF00397014
B. Raspor, P. Valenta, H.W. Nürnberg, M. Branica, The chelation of cadmium with NTA in sea water as a model for the typical behaviour of trace heavy metal chelates in natural waters Science of The Total Environment. ,vol. 9, pp. 87- 109 ,(1978) , 10.1016/0048-9697(78)90005-0
Mark S. Shuman, George P. Woodward, Stability constants of copper-organic chelates in aquatic samples Environmental Science & Technology. ,vol. 11, pp. 809- 813 ,(1977) , 10.1021/ES60131A010
J. Buffle, P. Deladoey, F.L. Greter, W. Haerdi, Study of the complex formation of copper(II) by humic and fulvic substances Analytica Chimica Acta. ,vol. 116, pp. 255- 274 ,(1980) , 10.1016/S0003-2670(01)95206-7
K. C. Swallow, J. C. Westall, D. M. McKnight, N. M. L. Morel, F. M. M. Morel, Potentiometric determination of copper complexation by phytoplankton exudates 1 Limnology and Oceanography. ,vol. 23, pp. 538- 542 ,(1978) , 10.4319/LO.1978.23.3.0538
Richard J. Stolzberg, Diane. Rosin, Chromatographic measurement of submicromolar strong complexing capacity in phytoplankton media Analytical Chemistry. ,vol. 49, pp. 226- 230 ,(1977) , 10.1021/AC50010A014
B. Raspor, M. Branica, Comparison of the polarographic reduction of Cd-NTA, -EDTA and -DTPA chelates in chloride solutions Journal of Electroanalytical Chemistry. ,vol. 60, pp. 335- 339 ,(1975) , 10.1016/S0022-0728(75)80267-1
Boaz Lazar, Amitai Katz, Sam Ben-Yaakov, Copper complexing capacity of seawater: A critical appraisal of the direct ASV method Marine Chemistry. ,vol. 10, pp. 221- 231 ,(1981) , 10.1016/0304-4203(81)90043-8
G.E. Batley, T.M. Florence, Determination of the chemical forms of dissolved cadmium, lead and copper in seawater Marine Chemistry. ,vol. 4, pp. 347- 363 ,(1976) , 10.1016/0304-4203(76)90020-7