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Gordeev V. V. Shevchenko V. P. Korobov V. B. Kochenkova A. I. Starodymova D. P. Belorukov S. K. Lokhov A. S. Yakovlev A. E. Chultsova A. L. Zolotykh E. O. Lobkovsky L. I. 《Doklady Earth Sciences》2021,500(1):787-793
Doklady Earth Sciences - The results of four years of continuous investigations (from May 2015 through April 2019) of the elemental composition of the water of the Northern Dvina River are... 相似文献
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The elemental composition of ferromanganese sedimentary structures from the bottom of Lake Baikal represented by nodules and
crusts, as well as the enclosing sediments, have been studied by the atomic absorption, chemical, and ICP-MS methods. It is
established that the contents of the rock-forming and accompanying elements in them are highly variable. In this connection,
the examined samples are divided in two groups differing by their Mn/Fe values. In most of the samples, they range from 0.01
to 0.1, although some of the ferromanganese structures or their parts are substantially enriched in manganese. The contents
of most of the rare and dispersed elements in the ferromanganese structures are usually at the background level, although
the samples maximally enriched in iron or manganese are characterized by relatively high copper, nickel, cobalt, vanadium,
zinc, and molybdenum concentrations. 相似文献
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V. P. Shevchenko O. S. Pokrovsky A. S. Filippov A. P. Lisitsyn V. A. Bobrov A. Yu. Bogunov N. N. Zavernina E. O. Zolotykh A. B. Isaeva N. M. Kokryatskaya V. B. Korobov M. D. Kravchishina A. N. Novigatsky N. V. Politova 《Doklady Earth Sciences》2010,430(2):228-234
New data on the elemental composition of the Severnaya Dvina River, the largest one in the White Sea region, are presented. The elemental composition of the river water in May, the period of the snowmelt flood, is similar to the upper layer of the Earth’s continental crust due to the active erosion of the earth material in the catchment area. In August, the period of the summer low water, the impact of biogenic components increases and elevated concentrations of Cd, Sb, Mn, Zn, Pb, and Cu are observed. At other times, no significant pollution by heavy and rare-earth elements is registered. 相似文献
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