Community Research and Development Information Service - CORDIS

Voltammetric In-Situ profiling system - VIP

Summary:
The voltammetric probe for in situ measurements in the water column has been named the Voltammetric In Situ Profiling System (VIP System).

Its development has involved:
- Gel integrated microsensor arrays with 100 interconnected microelectrodes built using thin-film and photolithographic technologies;

- A submersible probe based on advanced microprocessor and telemetric technologies; and

- Hardware, firmware and software for the control of the whole system, i.e. data transmission and acquisition, data processing and maintenance operations. The VIP System has been thoroughly tested in the laboratory and in field conditions (sea and freshwaters).

All the field tests performed have shown that the VIP System is reliable for real-time in situ measurements in natural waters.

In particular:
- Temperature variation effects can be easily corrected;

- Voltammetric signals are independent of pressure;

- The protective gel layer effectively minimizes fouling problems; and

- The VIP System has speculation capabilities, which provides useful information on biogeochemical cycles.

The VIP System is now commercialised by Idronaut. In its present state, it can be used for in-situ measurements and speciation of Cu(II), Pb(II), Cd(II) Zn(II) (ppt level) as well as Mn(II), Fe(II), S(-II) (ppb level) down to 500 m depth using either Square Wave Anodic Stripping Voltammetry (SWASV) or Square Wave Cathodic Sweep Voltammetry (SWCSV).

Contact

Flavio GRAZIOTTIN, (Technical Director)
Tel.: +39-039-879656
Fax: +39-039-883382
E-mail
Record Number: 23649 / Last updated on: 2005-05-16
Information source: e-TIP
Collaboration sought: Information exchange/Training
Stage of development: Results of demonstration trials available