SM&T activities in support of standardisation of operationally-defined extraction procedures for soil and sediment analysis -- Sequential extraction procedures for sediment analysis -- Extraction procedures for soil analysis -- Sequential extraction procedures for the characterisation of the fractionation of elements in industrially-contaminated soils -- Sequential extraction procedure for phosphorus form in lake sediment -- Leaching procedure for the availability of polycyclic aromatic hydrocarbons (PAHs) in contaminated soils and waste materials -- Harmonisation of leaching L extraction procedures for sludge, compost, soil and sediment analyses.