A geochemical study on the specific distribution of barium in Lake Biwa, Japan

Details A geochemical study on the specific distribution of barium in Lake Biwa, Japan A geochemical study on the specific distribution of barium in Lake Biwa, Japan

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56..597s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 56, Issue 2, pp.597-605

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Scientific paper

The vertical distribution of alkaline earth elements (AEEs) was measured in a mesotrophic lake, Lake Biwa, of Japan. By comparing the distribution profiles of the elements, it was noticed that the dissolved barium concentration markedly decreased in the bottom layer during the stagnation stage of the lake. This characteristic distribution disappeared in the circulation stage but appeared repeatedly in the succeeding stagnation stage. Such periodic variation of the barium distribution profile contrasts with the result that other AEEs were uniformly distributed without regard to depth or stage of lake water circulation. Adsorption of AEEs onto synthetic hydrous manganese oxide (HMO) was examined in lake water. The results suggest that the specific distribution of barium observed in Lake Biwa was caused by the selective adsorption of the element onto HMO, which is naturally produced at the bottom of the lake.

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