Introduction Conclusions References

Environmental biomonitoring has demonstrated that organisms such as crustaceans, fish and mushrooms are useful to evaluate and monitor both ecosystem contamination and quality. Particularly, some mushroom species have a high capacity to retain radionuclides and some toxic elements from the soil and the air. The potential of mushrooms to accumulate radionuclides in their fruit-bodies has been we...

The paper summarizes the results of the 240Pu/239Pu atomic ratio studies in atmospheric fallout samples collected in 1986 over Gdynia (Poland) as well as three Baltic fish species collected in 1997 using the accelerator mass spectrometry. A new generation of AMS has been developed during last years and this method is an efficient and good technique to measure long-lived radioisotopes in the env...

We investigated the different sources and their corresponding impact areas of Pu in Chinese surface soils to illustrate state-of-the-art sources, levels distributions 240Pu/239Pu atom ratios as well 239+240Pu activity concentrations China. For first time a moving average strategy combination with statistical analysis was employed partition geographic China based on reported ratio concentration ...

The purpose of this paper is to provide guidance for Canadian hospital medical directors in planning the provision of protection for their patients and staff against gamma radiation hazard from nuclear war. The implications of the distribution of fallout in Canada are that the probability of exposures in excess of 600 r in the period "96 hours after fallout" is high in Southern Ontario and Queb...

Two data groups were analyzed: (1) the exposure rate in the former Czechoslovakia after the Chernobyl accident in 1986, and (2) the decrease of beta activity of an atmospheric fallout sample taken in Bratislava during 24 h on 30 May 1965. Both quantities decreased with the first power of time. This pattern of decrease is explained by applying the same mathematical formalism as is also used to d...

During summer stratification, particles transported by wind from surrounding forest were a major source of P into Mirror Lake, a small, oligotrophic lake in New Hampshire. These particles consisted largely of terrestrial insects, insect parts, and plant fragments of various sizes. This atmospheric fallout ofP was greatest near the shoreline and decreased exponentially with increasing ,distance ...

The most dramatic effect of exposure to fallout from the Chernobyl accident on physical health has been the increase in thyroid cancer. When this was first reported 1,2, there was scepticism in Europe and the US, as it was not thought plausible that exposure to radio-isotopes of iodine in fallout could lead to such an increase in thyroid cancer with such a short latency. This review will discus...

The results of the measurements of ionization due to the beta and gamma-radiations near the ground surface from 1967 through 1969 are reported, and are discussed comparing with those obtained from 1963 through 1966. The ionization due to the beta-radiation decreased gradu ally, and the mean value for this period is about I J at one meter above the ground surface, and that by the gamma-radiation...

Assistant Professor of Botany, Duke University, Durham, N.C. 27706; and Research Assistant, Department of Biological Sciences, University of California, Santa Barbara, CA 93106 Abstract: Precipitation and dry fallout were collected over a 2-year period at a remote site in the Santa Ynez Mountains, Santa Barbara County, California, USA and analyzed for nutrient content. Mean annual depositions o...