منابع مشابه
Metal–sulfide complexation in seawater
The conditional stability constants of metal–sulfide complexes were determined in pH 8 seawater at various salinities, by Ž . flow-analysis with detection by cathodic stripping voltammetry FA-CSV . Two methods were used. The first method was titration of the sulfide by metal with detection of the free sulfide by FA-CSV. The titrant metals were Ag, Cd, Co, 2q 2q 2q 2q 3q 3q Ž . Fe , Mn , Pb , Zn...
متن کاملMetal–organic complexation in the marine environment
We discuss the voltammetric methods that are used to assess metal-organic complexation in seawater. These consist of titration methods using anodic stripping voltammetry (ASV) and cathodic stripping voltammetry competitive ligand experiments (CSV-CLE). These approaches and a kinetic approach using CSV-CLE give similar information on the amount of excess ligand to metal in a sample and the condi...
متن کاملA study of heavy metal complexation in grape juice
Differential Pulse Anodic Stripping Voltammetry, DPASV, has been used to monitor the initial stages of grape juice fermentation, focusing on Zn interactions with natural occurring ligands. Langmuir and Scatchard linearization methods have been employed. A 1:1 ratio has been found by either method; from Langmuir data analysis only one ligand population was found, while Scatchard approach gave ri...
متن کاملComplexation amplified pH oscillation in metal involved systems.
A novel mechanism of amplifying pH oscillations by pH-dependent EDTA-metal ion complexation is proposed. If there is a metal ion involved in the H(+) consuming reactions in the pH oscillator and the metal's complex formation constant is big enough, the nonlinear coupling of the original oscillator with the complexation induced metal ion oscillation can finally amplify the pH oscillation. This e...
متن کاملMetal complexation by electroanalytical techniques: hard- and soft-modelling approaches
vidual chemical element between different chemical species or groups of species [1]. In natural aquatic systems it reflects the chemical complexity of these media. Substantial progress has been made over recent years in chemical speciation and in the understanding of metal interactions with aquatic organisms, which are crucial issues owing to their intimate relationships with bioavailability an...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1981
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.67.2.311