title: Radon and Thoron Measured in Petrol and Gas-oil Exhaust Fumes by Using CR-39 and LR-115 II Nuclear Track Detectors: Radiation Doses to the Respiratory Tract of Mechanic Workers.
abstract: Mechanic workers are exposed to exhaust fumes when controlling vehicle engines in motion inside repair shops. To assess radiation doses due to radon short-lived progeny from the inhalation of exhaust fumes by mechanic workers, concentrations of these radionuclides were measured in petrol (gasoline) and gas-oil exhaust fumes by evaluating mean critical angles of etching of the CR-39 and LR-115 type II SSNTDs for alpha particles emitted by the radon and thoron decay series. Committed effective doses due to ²¹⁸Po and ²¹⁴Po short-lived radon decay products from the inhalation of petrol and gas-oil exhaust fumes by workers were evaluated. A maximum value of 1.35 mSv y⁻¹ due to radon short-lived decay products from the inhalation of gas-oil exhaust fumes by mechanic workers was found, which is lower than the (3-10 mSv y⁻¹) dose limit interval for workers.
authors.affiliation: *Nuclear Physics and Techniques Laboratory, Faculty of Sciences Semlalia, BP.2390, University of Cadi Ayyad, Marrakech, Morocco (URAC-15 Research Unit Associated to the CNRST, Rabat, Morocco).
authors.forename: M A
authors.initials: MA
authors.lastname: Misdaq
authors.forename: A
authors.initials: A
authors.lastname: Chaouqi
authors.forename: J
authors.initials: J
authors.lastname: Ouguidi
authors.forename: R
authors.initials: R
authors.lastname: Touti
authors.forename: A
authors.initials: A
authors.lastname: Mortassim
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis; D000512:Alpha Particles; D001610:Beta Particles; D006801:Humans; D016273:Occupational Exposure; D011829:Radiation Dosage; D011874:Radiometry; D011886:Radon / Q000032:analysis*; D012137:Respiratory System / Q000528:radiation effects*
chemical_list: D000396:Air Pollutants, Radioactive; D011886:Radon