This lab manual provides an interdisciplinary collection of 23 extensively tested environmental chemistry experiments — with extensive introductory background material for each experiment. It covers a broad range of methods and provides detailed instructions on calculation of results. Experiments involve, for example: inorganic and organic profile of sediment and soil cores, the pH of environmental waters and buffer capacity, alkalinity of streams and lakes, trace levels of ions in natural waters, conductivity of natural waters, cloride ion in natural waters, colorimetry and absorption spectra, metals in natural waters and in sediments, atomic absorption spectrometry, the chemical oxygen demand of natural waters and wastewaters, the fluorimetric determination of polycyclic aromatic hydrocarbons, environmental hydrocarbons, air sampling-particulates in urban air, carbon dioxide in the atmosphere, acid rain, decomposition of pollutants with an application to plasticizers, and detergents. For chemists and technicians with environmental agencies.