title: (90)Sr in teeth of cattle abandoned in evacuation zone: Record of pollution from the Fukushima-Daiichi Nuclear Power Plant accident.
abstract: Here we determined the (90)Sr concentrations in the teeth of cattle abandoned in the evacuation area of the Fukushima-Daiichi Nuclear Power Plant (FNPP) accident. (90)Sr activity concentrations in the teeth varied from 6-831 mBq (g Ca)(-1) and exhibited a positive relationship with the degree of radioactive contamination that the cattle experienced. Even within an individual animal, the specific activity of (90)Sr (Bq (g Sr)(-1)) varied depending on the development stage of the teeth during the FNPP accident: teeth that were early in development exhibited high (90)Sr specific activities, while teeth that were late in development exhibited low specific activities. These findings demonstrate that (90)Sr is incorporated into the teeth during tooth development; thus, tooth (90)Sr activity concentrations reflect environmental (90)Sr levels during tooth formation. Assessment of (90)Sr in teeth could provide useful information about internal exposure to (90)Sr radiation and allow for the measurement of time-course changes in the degree of environmental (90)Sr pollution.
authors.affiliation: Department of Chemistry, Tohoku University, Japan.
authors.forename: Kazuma
authors.initials: K
authors.lastname: Koarai
authors.affiliation: Department of Chemistry, Tohoku University, Japan.
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kino
authors.affiliation: Tohoku University Hospital, Tohoku University, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takahashi
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.|International Research Institute of Disaster Science, Tohoku University, Japan.
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.
authors.forename: Yoshinaka
authors.initials: Y
authors.lastname: Shimizu
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.
authors.forename: Mirei
authors.initials: M
authors.lastname: Chiba
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.|International Research Institute of Disaster Science, Tohoku University, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Osaka
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Sasaki
authors.affiliation: Graduate School of Agricultural Science, Tohoku University, Japan.
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Fukuda
authors.affiliation: Graduate School of Agricultural Science, Tohoku University, Japan.
authors.forename: Emiko
authors.initials: E
authors.lastname: Isogai
authors.affiliation: Faculty of Agriculture, Niigata University, Japan.
authors.forename: Hideaki
authors.initials: H
authors.lastname: Yamashiro
authors.affiliation: Department of Chemistry, Tohoku University, Japan.|Institute for Excellence in Higher Education, Tohoku University, Japan.
authors.forename: Toshitaka
authors.initials: T
authors.lastname: Oka
authors.affiliation: Department of Chemistry, Tohoku University, Japan.|Institute for Excellence in Higher Education, Tohoku University, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Sekine
authors.affiliation: Institute of Development, Aging and Cancer, Tohoku University, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Fukumoto
authors.affiliation: Graduate School of Dentistry, Tohoku University, Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Shinoda
mesh_terms: D000818:Animals; D002118:Calcium / Q000737:chemistry; D002417:Cattle; D002588:Cesium Radioisotopes / Q000032:analysis; D004777:Environment; D004787:Environmental Pollution; D005507:Food Contamination, Radioactive / Q000032:analysis; D062406:Fukushima Nuclear Accident; D005843:Geography; D007564:Japan; D055848:Nuclear Power Plants; D011834:Radiation Monitoring; D011848:Radioactive Pollutants / Q000032:analysis*; D012987:Soil / Q000737:chemistry; D013326:Strontium Radioisotopes / Q000737:chemistry*; D014070:Tooth / Q000528:radiation effects*
chemical_list: D002588:Cesium Radioisotopes; D011848:Radioactive Pollutants; D012987:Soil; D013326:Strontium Radioisotopes; D002118:Calcium