The project is aiming at the development of sensors for metals in marine environments with special emphasis on new technologies and improvement of existing technologies.
The major drawback of present analytical tools is that they are often fragile and their application in stand-alone systems is difficult.
Optical techniques based on molecular spectroscopy offer distinct advantages for reason of simplicity and absence of physical contact between the detection system and the analytes. In particular, luminescence methods (fluorescence, phosphorescence, chemiluminescence) offer potential advantages in ion determination: high sensitivity, ease of automation and straightforward application to fibre optics remote sensing.
Specifically, the following metals will be addressed: Cd, Zn, Hg, Pb, Cu, Fe, Co and Mn but the technology that will be developed is applicable to other metals.
Specific objectives are as follows:
a/ the participants in the project will develop optical sensing techniques for monitoring the metals by fluorescence (Cd, Zn), phosphorescence (Hg, Pb) or chemiluminescence (Cu, Fe, Mn, Co).
b/ an instrumentation for steady and time-dependent emission based on an optical transient recorder will be constructed and adapted to the specific requirements of the three luminescence techniques. Timedependent intensities will provide a signature for the cations when needed.
c/ analytical methodologies based on optical sensing will be developed and assessed for the eight metals.
d/ speciation of the metals will be addressed, therefore analysis will be performed on untreated marine samples and U.V. digested samples. e/ automated operationel in-situ and on-line preconcentrators will be designed and constructed to meet the analytical requirements when appropriat
Funding SchemeCSC - Cost-sharing contracts
PL4 8AA Plymouth