Applying of Modified Constant Rate of Supply Model to Lake Sediments in 210 Pb Dating and Assessment of Some Heavy Metals

Authors : İlker SERT

Pages : 598-607

View : 21 | Download : 10

Publication Date : 2018-08-15

Article Type : Research Paper

Abstract :In present study, Lead-210 insert ignore into journalissuearticles values(Polonium-210); activity concentrations were indirectly obtained by utilizing alpha spectrometry. Sediment chronology was determined by using modified CRS model. Average sediment accumulation rates are 0.351, 0.324, 0.222 g cm -2 y -1 in S-1, S-2, S-3 stations respectively. With reference to atmospheric 210 Pb flux insert ignore into journalissuearticles values(29 mBq cm -2 y -1 ); Lake Karagöl has extra outer 210 Pb input insert ignore into journalissuearticles values(soil erosion); from the catchment area. In terms of Enrichment Factor insert ignore into journalissuearticles values(EF);, heavy metal concentrations are lower than the anthropogenic values. So it can be said that the elements except Au originate from the continental supply. Au has unexpectedly too high level EF value insert ignore into journalissuearticles values(58.22); in northern station insert ignore into journalissuearticles values(S-1); of the Lake Karagöl. It corresponds to time interval from 2004 to nowadays. However Pollution Load Index insert ignore into journalissuearticles values(PLI); says different consequences from the EF values. PLI value has only baseline levels of pollutants in northern part of the Lake Karagöl as it shows progressive deterioration of the site for southern part of the Lake Karagöl.
Keywords : Sediment accumulation rate, Modified CRS model, 210Pb, Pollution load index, EF Values, Lake Karagöl