Abstract
Concentration of major ions and trace metals dissolved and suspended in water and trace metals in plankton of freshwater (Vaskovskoye, Golubichnoye, Yaponskoye) and brackish (Dukhovskoye, Krugloye, Mramornoye, Blagodati) lakes of eastern Sikhote-Alin is determined in July 2011-2012. The Lakes Golubichnoye and Blagodati are included in the Sikhote-Alin State Natural Biosphere Reserve. Anions are detected by the liquid chromatography (Shimadzu LC-10AVP), cations and metals are analyzed by the atomic absorption spectrophotometry (AAS Shimadzu 6800), and carbon concentration is measured by the method of thermocatalytic oxidation with infrared registration (TOC-VCPN, Shimadzu). The freshwater lakes of eastern Sikhote-Alin are distinguished by heightened concentrations of chlorides, sulfates, and sodium as compared with lakes of East-European Plain, mainly because of aerial transfer of ions from the sea. The ions concentration in brackish lakes is determined by direct penetration of seawater. Difference of the heavy metals concentration between freshwater and brackish lakes is negligible, except the manganese with higher concentration in the freshwater lakes. Lakes with wetlands in their drainage area have high concentrations of dissolved organic carbon, iron and manganese, which are depended on water regime. Concentrations of trace metals in the lakes water are low because of its pluvial origin (rainwater transforms slightly in the process of filtration through effusive rocks), with exception of Lake Vaskovskoe located in the area of mining and processing the polymetallic and borosilicate ores, close to the lead smeltery in Rudnaya Pristan stopped in 2009: the lead concentration in the water of this lake is heightened, both in dissolved and suspended forms, though does not exceed the maximal permissible concentration for drinking water. Accumulation of metals by plankton is determined mainly by biological need of the plankton in these elements and practically doesn’t depend on their concentration in water.
Highlights
Concentration of major ions and trace metals dissolved and suspended in water and trace metals in plankton of freshwater (Vaskovskoye, Golubichnoye, Yaponskoye) and brackish (Dukhovskoye, Krugloye, Mramornoye, Blagodati) lakes of eastern Sikhote-Alin is determined in July 2011–2012
Anions are detected by the liquid chromatography (Shimadzu LC-10AVP), cations and metals are analyzed by the atomic absorption spectrophotometry (AAS Shimadzu 6800), and carbon concentration is measured by the method of thermocatalytic oxidation with infrared registration (TOC-VCPN, Shimadzu)
The freshwater lakes of eastern Sikhote-Alin are distinguished by heightened concentrations of chlorides, sulfates, and sodium as compared with lakes of East-European Plain, mainly because of aerial transfer of ions from the sea
Summary
Изучен химический состав поверхностных вод пресных и солоноватых озер восточной части Сихотэ-Алиня. Повышенное содержание этих макроионов отличает пресные озера восточного Сихотэ-Алиня от озер ВосточноЕвропейской равнины. Накопление металлов в озерном планктоне — создателе первичной продукции — в озерах восточного Сихотэ-Алиня зависит главным образом от его потребности в элементах и практически не зависит от содержания микроэлементов в водной среде. Concentration of major ions and trace metals dissolved and suspended in water and trace metals in plankton of freshwater (Vaskovskoye, Golubichnoye, Yaponskoye) and brackish (Dukhovskoye, Krugloye, Mramornoye, Blagodati) lakes of eastern Sikhote-Alin is determined in July 2011–2012. Особенности формирования химического состава вод малых озер Приморского края, существующих в условиях муссонного климата, изучены фрагментарно. Цель данного исследования — изучение гидрохимических и биогеохимических особенностей малых озер восточного макросклона Сихотэ-Алиня, находящихся под влиянием моря и антропогенной нагрузки различной интенсивности
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