Sci Total Environ 2016 Dec 31;573:751-759. Epub 2016 Aug 31.
Water Research Institute, National Research Council, via del Mulino 19, 20861 Brugherio, Italy.
During a sampling campaign, carried out during June 2012, inside some traditional households located in four villages (Phakding, Namche, Pangboche and Tukla) of Mt. Everest region in southern part of the central Himalaya (Nepal), particulate matter (PM) depositions and ashes have been collected. Moreover, outdoor PM depositions have also been analyzed. Chemical characterization of PM depositions and ashes for major ions, organic carbon, elemental carbon (EC), metal content and PAHs (Polycyclic Aromatic Hydrocarbons) allowed identifying, as major contributes to indoor PM, the following sources: biomass burning, cooking and chimney ashes. These sources significantly affect outdoor PM depositions: in-house biomass burning is the major source for outdoor EC and K as well as biomass burning and cooking activities are the major sources for Polycyclic Aromatic Hydrocarbons.