Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial). These measurements are gathered as a part of the following projects CAMPAIGN, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: 2-ketobutyric_acid in pm10, 3-MBTCA in pm10, 3-hydroxybutyric_acid in pm10, 4-hydroxybenzoic_acid in pm10, 4-methylphthalic_acid in pm10, 4-oxoheptanoic_acid in pm10, adipic_acid in pm10, adonitol in pm10, ammonium in pm10 (mass_concentration_of_ammonium_in_pm10_in_air), ammonium in pm10 (mass_concentration_of_ammonium_in_pm10_in_air), arabitol in pm10, azelaic_acid in pm10, benzoic_acid in pm10, calcium in pm10 (mass_concentration_of_calcium_in_pm10_in_air), caproic_acid in pm10, chloride in pm10 (mass_concentration_of_chloride_in_pm10_in_air), cis-pinonic_acid in pm10, citraconic_acid in pm10, citric_acid in pm10, fructose in pm10, gluconic_acid in pm10, glucose in pm10, glutaric_acid in pm10, glycolic_acid in pm10, glyoxylic_acid in pm10, inositol in pm10, lactic_acid in pm10, lactose in pm10, levoglucosan in pm10 (mass_concentration_of_levoglucosan_in_pm10_in_air), magnesium in pm10 (mass_concentration_of_magnesium_in_pm10_in_air), maleic_acid in pm10, malic_acid in pm10, malonic_acid in pm10, maltose in pm10, mannitol in pm10, mannose in pm10, melezitose in pm10, methanesulfonic_acid in pm10 (mass_concentration_of_methanesulfonic_acid_in_pm10_in_air), nitrate in pm10 (mass_concentration_of_nitrate_in_pm10_in_air), nitrate in pm10 (mass_concentration_of_nitrate_in_pm10_in_air), oxalic_acid in pm10, phthalic_acid in pm10, pimelic_acid in pm10, pinic_acid in pm10, pm10_mass in pm10 (mass_concentration_of_pm10_ambient_aerosol_particles_in_air), pm25_mass in pm25 (mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air), potassium in pm10 (mass_concentration_of_potassium_in_pm10_in_air), pyruvic_acid in pm10, rhamnose in pm10, sebacic_acid in pm10, sodium in pm10 (mass_concentration_of_sodium_in_pm10_in_air), sorbitol in pm10, suberic_acid in pm10, succinic_acid in pm10, sucrose in pm10, sulphate_total in pm10 (mass_concentration_of_sulphate_total_in_pm10_in_air), sulphate_total in pm10 (mass_concentration_of_sulphate_total_in_pm10_in_air), sum_2-methyltetrols in pm10, tartaric_acid in pm10