30 Settembre 2023

Environmental Sensors – L.M. Materials Science and Technology

Syllabus

1. Environmental monitoring

Introduction. Main sources of pollution.Contaminants in soil. Water quality monitoring. Physical and chemical variables in water pollutants monitoring.

2. Contaminants in air

Classification of atmospheric pollutants. Sampling procedures and analysis. Greenhouse effect and global warming. Health risks and indoor monitoring.

3. Figures of merit for sensing

Data acquisition and sensor classification. Transfer function. Sensor characteristics. Physical principles of sensing. Example: gas sensor calibration

4. Optical-based sensors for environmental monitoring

Absorption and emission of light. Roto-Vibrational spectroscopy. Fundamentals of absorption spectroscopy. Dispersive and non-dispersive sensor in the infrared. Tunable diode laser spectroscopy. Multipass cells and optical cavities. Photoacoustic spectroscopy. Remote sensing ed hyperspectral imaging.

5. Non-optical-based sensors for environmental monitoring

Voltametric and amperometric sensors. Potentiometric sensors. Metal-oxide chemoresistive sensors. Gas chromatography. Electrochemical sensors. Smart sensors for environmental monitoring.

6. Analysis of volatile organic compounds

Classification and sources of VOCs. State-of-the-art: analysis using non-optical sensors. New perspectives: VOCs detection using optical-based sensors.

TEXTBOOKS

  • Sensor Systems for Environmental Monitoring – Volume One – Editor: M. Campbell
  • Sensor Systems for Environmental Monitoring – Volume Two – Editor: M. Campbell


SLIDES (updating)

1. ENVIRONMENTAL MONITORING

2. CONTAMINANTS IN AIR

3. FIGURES OF MERIT FOR SENSING

4. OPTICAL-BASED SENSORS FOR ENVIRONMENTAL MONITORING (PART 1) & (PART 2)

5. NON-OPTICAL SENSORS FOR ENVIRONMENTAL MONITORING

6. ANALYSIS OF VOLATILE ORGANIC COMPOUNDS