To introduce students to the principles of different instruments for the measurements of gaseous and particulate pollutants based on the Reference methods (USEPA approved methods) and advanced research methods. Students will learn the fundamental concepts in the design of instruments used in typical air quality monitoring stations (AQMS) and research facilities. In addition to introducing the techniques for assessing the criteria pollutants, we will put emphasis on measurements of various physical and chemical characteristics of particulate matters. Real time techniques will also be discussed.