this study reports the concentrations of important tracers of the marine environment, 210po and210pb, in different matrices from field samples collected at central adriatic sea (italy), a non-contaminatedmarine ecosystem. 210po concentration appears to decrease with increasing distance from the coast and asignificant difference in 210po concentrations in seawater samples at two different depths...

Activation calculations have been performed for the LIBRA reactor. Replacing HT-9 by low activation modified HT-9 increases the activity by a factor of 2.5 at shutdown while the long term activity drops by a factor of 25. The reflector is classified as Class C low level waste when modified HT-9 is used. Using HT-9 will require deep geological burial for the LIBRA radwaste. The activity produced...

The Jacobi room model was applied to study the relative contributions from the unattached and attached fractions to the implanted activity of 210Po. It was found that under normal conditions, about 85% of the implantation was due to the unattached fraction. Sensitivity analysis was performed to identify the most important factors that influence the deposition and implantation of radon progeny. ...

At the time of publication, the remains of Yasser Arafat have been exhumed and are being investigated for cause of death as a result of the fi ndings of the case reported here. On Nov 11, 2004, Arafat died at the age of 75 years of an unidentifi ed illness in Percy Hospital, France. He presented with a medical history that began in Ramallah on Oct 12, 2004, with nausea, vomiting, abdominal pain...

The main aim of this work was to determine the levels multiple natural radionuclides in an aquatic system (Moulouya river, Morocco) impacted by abandoned Zinc and Lead mines. 238U, 234U, 232Th, 230Th 210Po were determined alpha-particle spectrometry water sediment samples collected along river from three pit lakes mines, located Upper Moulouya catchment area. results enabled analysis different ...

The uranium (238U) decay series provides the most important isotopes of elements radium (226Ra), radon (222Rn), and polonium (210Po) with half-lives of about 1600 years, 3.8 days, and 140 days, respectively. Although the chemical structure of radium is very similar to calcium, the fact that it produces a radioactive gas (radon) complicates its handling in the laboratory and natural environment....

Although cigarette smoking continues to occur worldwide, there are few methods available to assess a person's retrospective exposure to mainstream smoke. The tobacco of cigarettes contains trace quantities of radioactive 210Pb and 210Po, which are volatilized and inhaled when a cigarette is smoked. It was hypothesized that urinary 210Pb and 210Po activity concentrations could be used as biomark...

INTRODUCTION In November 2006, a Russian dissident died from radioactive Polonium-210 (210Po) poisoning in London. Providing reassuring messages during a public health incident may be ineffective for individuals with high health anxiety (hypochondriasis). METHODS Members of the public who called a 24-hour telephone helpline were offered a follow-up call by a health protection specialist for r...

This paper aims at assessing the concentrations of heavy metals and the isotopic composition of lead 210Pb in different fractions of sediment produced in the watershed that makes up the Mãe d'água dam and thus characterizing the distribution of metals along the sedimentary column and inferencing in the urbanization of the same process. Sample collection was carried out in June 2014; eight sedim...