Introduction.

When water quality is essential, and the accurate, ongoing monitoring of the world's most precious resource a must, the ARS Monet offers a revolutionary new solution that is easy to run and install. Though the ARS Monet was designed for the remote analysis of air and water it can also be extremely useful in the laboratory. Extensive field-testing has proven that the ARS Monet is reliable and simple to use.

Advantages.

- Continuous, real-time analysis - both on-site and in the laboratory.
- Automatic data transmission allows remote analysis - wherever you are and whenever you want.
- This reliable, cost-effective and simple device has no environmental impact.
- Full, remote control of the device with commercially available software programs.

Continuous water monitoring allows for fast decisions in the event of emergency.
Results are more reliable than ever because the sample is not manipulated or
subjected to possible alterations awaiting analysis.

How the ARS-Monet analysis system works.

Thanks to an exclusive sampling device (designed according to the principle of pervaporation through a membrane permeable to organic compounds yet virtually water-impermeable,) VOCs present in water are simultaneously extracted, concentrated, purified, and then introduced into a mass spectrometer.
This then identifies and quantifies them at sub-ppb sensitivity levels.

Monet automatically converts and transmits the results, that can be displayed in the form of colour-coded bar graphs wich highlight excess or inferior values as pre-set by the operator. This means data can be easily understood by non specialized personnel.

Applications.

As applied to water analysis, the ARS Monet can detect a number of organic pollutants including volatile organo-halogens, BTEX, petrol, gasoline and oil markers.

e.g. chloroform in drinking water:

LOD = 40 ppt;

SD = 6 % (6 replied analysis at 0.45 ppb);

R2 = 0.998 (0.2 - 2 ppb).

References.

A Monet network is in service with Hera Spa, a major Italian water company, for surface- and groundwater monitoring.

The ARS Monet has been tested for industrial processing waters (Polimeri Europa Spa), and is being installed for the remote monitoring of municipal waste-water treatment plants (Hera Spa).

A Monet version for air quality check will operate soon in the ceramic industry.

Literature.

Papers

Paola Bocchini, Romina Pozzi, Christian Andalò and Guido C. Galletti
Experimental Upgrades of Membrane Introduction Mass Spectrometry for Water and Air Analysis.
Analytical Chemistry 2001, 73, 3824-3827. Abstract. Full text-pdf.

Paola Bocchini, Romina Pozzi, Christian Andalò and Guido C. Galletti
Membrane Inlet Mass Spectrometry (MIMS) of Volatile Organohalogen Compounds in
drinking Water.
Rapid Communications in Mass Spectrometry 1999, 13, 2049-2053.

Rewiews

Raimo A. Ketola, Tapio Kotiaho, Mary E. Cisper and Todd M. Allen
Environmental applications of membrane introduction mass spectrometry.
Journal of Mass Spectrometry 2002, 37, 457-476.Full text-pdf.

Books

Romina Pozzi, Paola Bocchini, Francesca Pinelli and Guido C. Galletti
Remote Monitoring of Volatile Organic Compounds in Water by Membrane Inlet Mass Spectrometry"(Chapter 16).
Practical Aspects of Trapped Ion Mass Spectrometry, 2009, 491-507.Full text- pdf.