Aspects of the geographical variations of naturally occurring ²¹⁰Pb/²¹⁰Po in permanent teeth of juveniles in the UK

Abstract

Higher levels of 210Pb-supported 210Po are seen in permanent teeth of juveniles near sources of increased exposure in the UK. Inhalation uptake is an important pathway of exposure, especially with respect to domestic radon exposure. The results might be important in assessing integrated exposure to 210Po in the skeleton and consequent high linear energy transfer dose to bone marrow.

Spatial variation in vehicle-derived metal pollution identified by magnetic and elemental analysis of roadside tree leaves

“…Their deposition in the lung may overwhelm the capacity of macrophages to engulf and remove them, leading to prolonged tissue contact times and resultant inflammation, whilst their high surface area also enhances their potential for bioavailability (Donaldson, 2003). That roadside lead emissions are bioavailable is indicated by reports of increased 210 Pb-supported 210 Po on the outer enamel of permanent teeth in children living in proximity to (< 10 km) and downwind from major UK motorways (Henshaw et al, 1995;James et al, 2004). Further, interactions between Fe-rich particles and epithelial tissues are suggested to generate free radicals, leading to oxidative cell damage (Aust et al, 2002).…”

Teeth as Indicators of Environmental Pollution with Lead

“…Higher levels of lead are seen in permanent teeth of juveniles near sources of increased exposure in the UK [52].…”