P-No.49
Passive sampling as a tool for time-integrated analysis of metals in marine waters using ICP-MS-MS
Jördis Petersen1,2, Daniel Pröfrock1, Jose A.C. Broekaert2, Andreas Prange1
1
Helmholtz-Centre-Geesthacht, Institute of Coastal Research, Max-Planck-Str. 1, 21502
Geesthacht, Germany
2
University of Hamburg, Department of Chemistry, Inorganic and Applied Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
The monitoring as well as the assessment of the current marine environmental status within
the context of the Marine Strategy Framework Directive (MSFD) requires new approaches for
the accurate and sensitive determination of contaminant levels as well as their potential effects.
Contaminants show a great distribution variability in the marine environment due to their
diverse chemical characteristics, different input pathways or their continuous remobilization
from sediments caused by anthropogenic activities. For that reason it is really difficult to
achieve a good environmental status as defined by 11 Descriptors within the Marine Strategy
Framework directive (MSFD). Furthermore 33 “historical” pollutants are listed in the Water
Framework Directive and only 5 of them are inorganic substances, but there are a lot of new
emerging contaminants, which could reach the marine environment for example Nano particles, rare earth elements, pharmaceuticals and personal care products.
In addition current monitoring approaches are often based on low frequency spot sampling,
which provides only snapshot information about the current contamination status, in particular
when working in dynamic environments such as the German North Sea.
A solution could be the use of time-integrated sampler’s approaches namely passive and active
sampling. In comparison to conventional spot sampling passive sampling allows the detecting
of very low concentrations. Because of possibility to sample for a long period passive sampling is more reprehensive than point strategies because of determination of time integrated
average contaminant concentrations. In addition passive sampling provides information about
bioavailability of target pollutants. Currently the most commonly used passive sampling devices for the time integrated analysis of metals and metal species are DGT (diffusive gradients
in thin films) and Chemcatcher®-Metal.
This poster contribution provides some first results about optimization of cleaning and extraction methods for selected passive samplers, which are mandatory for the successful future
application of the selected devices for the measurement of some metals. This results will be
used for calibrate the samplers and deploy them for monitoring the marine environment. To
overcome possible interference problems, which often influences the determination of many
environmentally relevant trace elements, ICP-MS-MS has been optimised for the accurate and
sensitive determination of the targeted elements.
P-No.49