title: Analytical studies of the environment.
mesh_terms: D000397:Air Pollution / Q000032:analysis; D002273:Carcinogens / Q000032:analysis; D004777:Environment; D004787:Environmental Pollution / Q000032:analysis; D008722:Methods; D014131:Trace Elements / Q000032:analysis; D014877:Water Pollution, Chemical / Q000032:analysis
chemical_list: D002273:Carcinogens; D014131:Trace Elements