title: Monitoring and modelling of indoor radon concentrations in a multi-storey building at Mumbai, India.
abstract: Radon (Rn(222)) levels in an indoor atmosphere of a multi-storey building at Mumbai have been measured for one year covering all the four seasons. Monitoring was carried out using the time-integrated passive detector technique, using Kodak-115 type Solid State Nuclear Track Detector (SSNTD) films of 2.5x2.5 cm size. Measured indoor radon levels showed a decreasing trend with height with concentration ranging from 41 Bq m(-3) at ground floor level to 15 Bq m(-3) at 19th floor level. Using the dose conversion factors, the inhalation dose due to breathing of radon gas is estimated to be 1.03 mSv y(-1) at the ground floor to 0.38 mSv y(-1) at the 19th floor level. Measured indoor radon concentrations on each floor were compared with the computed values using a mathematical model. The agreement between measured values and calculated values of indoor concentrations at different floors was very good within the limitations of various field parameter values.
authors.affiliation: Environmental Assessment Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. drans@apsara.barc.ernet.in
authors.forename: A N
authors.initials: AN
authors.lastname: Shaikh
authors.forename: T V
authors.initials: TV
authors.lastname: Ramachandran
authors.forename: A
authors.initials: A
authors.lastname: Vinod Kumar
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D007194:India; D008962:Models, Theoretical; D011886:Radon / Q000032:analysis*; D012621:Seasons
chemical_list: D011886:Radon