As a result of nuclear power plant accidents, large areas receive radioactive inputs of 137 Cs. This cesium accumulates in herbs growing in such territories. The problem is whether the herbs contaminated by radio-cesium may be used as a raw material for medicine. The answer depends on the amount of 137 Cs transfered from the contaminated raw material to the medicine. We have presented new resul...

The flood plains of lowland rivers frequently represent important sinks for suspended sediment transported through the river system. However, little is currently known about rates of overbank deposition by British rivers and, more particularly, whether such rates have increased in recent years in response to land use change. The fallout radionuclides Cs and Pb off ;r considerable potential for ...

The response of the passive photodosimeter with halide film characterized by a high optical density of about 0.550 ± 0.007 was analysed on dose ranges, taking into consideration the filters of the dosimetric badge, and finally compared with the thermoluminescent dosimeter (TLD). In this respect the dosimeters were exposed to a Cs 137 calibration radioactive source at different points within (0....

Concentration factors (CF: Bq.kg-1 in wet algae/Bq.kg-1 in filtered seawater) for Cs-137 in Japanese coastal algae, were investigated during 1984-1990. Cs-137/Cs(stable) atom ratios were also examined to clarify the distribution equilibrium of Cs-137 in marine algae and sea water. The CFs in marine algae were within the range of 5.4 approximately 92, and the geometric mean of CF was 28 +/- 2 (s...

During the operational history of the Savannah River Site (SRS), many different radionuclides have been released from site facilities into the SRS environment. However, only a relatively small number of pathways, most importantly (137)Cs in fish and deer, have contributed significantly to doses and risks to the public. The "effective" half-lives (Te) of (137)Cs (which include both physical deca...

The vertical distribution of (137)Cs activity in peat soil profiles and (137)Cs activity concentration in plants of various species was studied in samples collected at two sites on a raised bog in central Sweden. One site (open bog) was in an area with no trees and only a few sparsely growing plant species, while the other (low pine) was less than 100 m from the open bog site and had slowly gro...

Cesium adsorption/desorption experiments for various clay minerals, considering actual contamination conditions in Fukushima, were conducted using the (137)Cs radioisotope and an autoradiography using imaging plates (IPs). A 50 μl solution containing 0.185 ~ 1.85 Bq of (137)Cs (10(-11) ~ 10(-9 )molL(-1) of (137)Cs) was dropped onto a substrate where various mineral particles were arranged. It w...

Abstract Industrialization in the Northern Hemisphere has led to warming and pollution of natural ecosystems. We used paleolimnological methods explore whether recent climate change and/or had affected a very remote lake ecosystem, i.e. one without nearby direct human influence. compared sediment samples that date from before after onset industrialization mid-nineteenth century, four short core...