The journal is interdisciplinary in outlook, and manuscripts published in it cover all relevant areas: • inorganic chemistry – trace elements in food and the environment, metal complexes and chelates; • organic chemistry – environmental fate, chemical reactions, metabolites and secondary products, synthesis of standards and labelled materials; • physical chemistry – photochemistry, radiochemistry; • environmental chemistry – sources, fate, and sinks of xenochemicals, environmental partitioning and transport, degradation and deposition; • analytical chemistry – development and optimisation of analytical methods, instrumental and methodological advances, miniaturisation and automation; • biological chemistry – pharmacology and toxicology, uptake, metabolism, disposition of xenochemicals, structure-activity relationships, modes of action, ecotoxicological testing.