Temporal variability in dynamic and colloidal metal fractions determined by high resolution in situ measurements in a UK estuary

► Submersible voltammeter enables study of metal speciation at high temporal resolution. ► Estuarine bioavailable Cu and Cd concentrations change sharply within tidal cycles. ► Exchange between dissolved and colloidal phase influences Cu and Cd bioavailability. ► Iron colloids act as sedimentary sin...

Full description

Saved in:
Bibliographic Details
Published in:Chemosphere (Oxford) 2011-07, Vol.84 (4), p.423-431
Main Authors: Braungardt, Charlotte B., Howell, Kate A., Tappin, Alan D., Achterberg, Eric P.
Format: Article
Language:English
Subjects:
Applied sciences
Biogeochemistry
Brackish
Cadmium
Cadmium - analysis
Chlorophyll - analysis
Coastal water
Colloids
Colloids - analysis
Copper
Copper - analysis
Dissolution
Dynamical systems
Dynamics
Environmental Monitoring - methods
Exact sciences and technology
Fresh Water - chemistry
Freshwater
In situ monitoring
Lead (metal)
Lead - analysis
Metal speciation
Metals - analysis
Microsensor
Pollution
Seawater - chemistry
Speciation
United Kingdom
Voltammetry
Water Pollutants, Chemical - analysis
Water Pollution, Chemical - statistics & numerical data
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► Submersible voltammeter enables study of metal speciation at high temporal resolution. ► Estuarine bioavailable Cu and Cd concentrations change sharply within tidal cycles. ► Exchange between dissolved and colloidal phase influences Cu and Cd bioavailability. ► Iron colloids act as sedimentary sink and source for Pb in estuary with mining history. ► Bioavailable concentration of Cu impairs recruitment of juvenile higher organisms. In recent environmental legislation, such as the Water Framework Directive in the European Union (WFD, 2000/60/EC), the importance of metal speciation and biological availability is acknowledged, although analytical challenges remain. In this study, the Voltammetric In situ Profiler (VIP) was used for high temporal resolution in situ metal speciation measurements in estuarine waters. This instrument simultaneously determines Cd, Cu and Pb species within a size range (ca.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2011.03.050