Radionuclides in marine macroalgae from Amchitka and Kiska Islands in the Aleutians: establishing a baseline for future biomonitoring.

摘要: Abstract Levels of radionuclides in seven species marine brown algae and Ulva were determined to establish a baseline for the Northern Pacific Ocean/Bering Sea (Aleutian Islands). There differences levels among algal locations (Amchitka Island vs Kiska Island). No values above minimum detectable activity (MDA) level 137 Cs, 129 I, 60 Co, 152 Eu, 90 Sr, 99 Tc. interspecific some radionuclides: lactuca (= fenestrata ) had highest 241 Am, Alaria fistulosa 239,240 Pu, Fucus distichus gardneri 234 U, 235 238 U. However, all generally low near MDA isotopes. Although Amchitka higher Pu than Kiska, very small not significant biologically. The data indicate that can be useful bioindicators actinides because they accumulate them at environmental levels, allowing provide early warning any potential seepage into environment. Further, (the intertidal are better accumulators others, these should used as future monitoring schemes.