The mobile mass spectrometry lab houses ruggedized mass spectrometers adapted to provide continuous monitoring and on-line calibration. Instruments will be modified with on-line membrane sampling interfaces and to operate in a moving vehicle, which will be accessorized with a suite of meteorological and additional air/water quality sensors. On-board global positioning information will be interlaced with instrument data to yield real-time contaminant concentrations which can be visualized on a geo-spatial scales. This technology development will be used for rapid in-field analysis, continuous process monitoring and real-time mapping of chemical contaminants in Google Earth.