Part 1 Introduction: purity of reagents and detection limits; prepurification of reagents; effects of pH; effect of chelating agent-metal ratio; matrix interference effects; adsorption efficiency of solid adsorbents; ion exchange resin theory; coprecipitation techniques; preconcentration of organics by direct solvent. Part 2 Chelation-solvent extraction of anions and cations: metal cations - non-saline waters; metal cations - sea-water; anions - non-saline waters; anions - sea-water; organics - sea-water; organometallic compounds - non-saline waters; organometallic compounds - sea-water. Part 3 Macroreticular non-polar resins: organics; metal cations; organometallic compounds. Part 4 Cation exchange resins: metal cations; organics; organometallic compounds. Part 5 Anion exchange resins: simple anions - non-saline waters; anionic metal species; organics - non-saline waters; organometallic compounds.