Labile trace metal concentration measurements in marine environments:From coastal to open ocean areas

Gao, Y. and Zhou, C. and Gaulier, C. and Bratkic, A. and Galceran, J. and Puy, J. and Zhang, H. and Leermakers, M. and Baeyens, W. (2019) Labile trace metal concentration measurements in marine environments:From coastal to open ocean areas. TrAC Trends in Analytical Chemistry, 116. pp. 92-101. ISSN 0165-9936

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Abstract

In seawater, trace metals occur in many forms: free ion, labile and non-labile complex, colloid, associated with particles, but only free ions and very labile metal complexes can cross the phytoplankton membrane and be assimilated. In this paper we review the most appropriate determination methods for those metal species, addressing particularly in situ speciation and preconcentration. Focus is on DGT-ICPMS, which is a technique that meets these criteria very well. In coastal environments, DGT probes are widely used for metal pollution monitoring, but in open ocean a carrier such as a glider, is required. In open ocean organic metal complexation has been studied using DGT-ICPMS and electrochemical methods. The use of DGTs with different diffusion domain thicknesses provides information to quantify labilities and dissociation rates of metal complex pools. Labilities of metal complexes in coastal waters appeared to be higher than in open sea.

Item Type:
Journal Article
Journal or Publication Title:
TrAC Trends in Analytical Chemistry
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1602
Subjects:
ID Code:
134053
Deposited By:
Deposited On:
31 Jan 2020 12:00
Refereed?:
Yes
Published?:
Published
Last Modified:
25 Sep 2020 04:24