A Smart and Portable Solution for Heavy Metals Concentration Measurements

This paper presents a measurement solution for heavy metals concentrations. The proposed solution can be installed in stand-alone environmental monitoring stations and can incorporate measurement units for other water quality parameters such as temperature, conductivity, salinity, pH, dissolved oxygen and turbidity. A fully-automated monitoring station based on a low-cost potentiostat unit is presented together with a set of components and devices that can be used to provide auto calibration capabilities. A special attention is dedicated to data interpolation based on ANN curve fitting techniques and the interpolation results are compared with the ones obtained with traditional LMS polynomial interpolation techniques.

[1]  A. Angelescu,et al.  Micro and nanoelectrode voltammetric measurements , 2002, Proceedings. International Semiconductor Conference.

[2]  D. Leaver,et al.  UK Heavy Metal Monitoring Network , 2006 .

[3]  O. Postolache,et al.  Increasing ion selective electrodes performance using neural networks , 2002, 2nd ISA/IEEE Sensors for Industry Conference,.

[4]  K. A. Teague,et al.  In situ chlorine detection by ultraviolet absorption spectroscopy , 2002, The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002..

[5]  Randy Frank.  Understanding Smart Sensors , 1995 .

[6]  Daniel C. Harris,et al.  Quantitative Chemical Analysis , 1968, Nature.

[7]  R. B. Ash,et al.  Batch-produced microfabricated ion-selective electrodes: reproducibility, reliability and yields , 1995, Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society.

[8]  F. J. Holler,et al.  Principles of Instrumental Analysis , 1973 .

[9]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[10]  Martin G. Buehler,et al.  Designing a water-quality monitor with ion selective electrodes , 2001, 2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542).

[11]  Martin G. Buehler,et al.  Advanced electronic tongue concept , 2002, Proceedings, IEEE Aerospace Conference.

[12]  S.V. Kovaleva,et al.  Methods of stripping voltammetry in system of monitoring priority ecotoxicants in objects of an environment , 2005, Proceedings. The 9th Russian-Korean International Symposium on Science and Technology, 2005. KORUS 2005..

[13]  A. Angelescu,et al.  Fast scan cyclic voltammetry simulation for silicon nanoelectrodes , 2001, 2001 International Semiconductor Conference. CAS 2001 Proceedings (Cat. No.01TH8547).

[14]  E. T. Powner,et al.  An intelligent multi-sensing sensor-array , 1996 .

[15]  Gerard C. M. Meijer,et al.  A simple accurate bridge-transducer interface with continuous autocalibration , 1997 .