KIM V. I

KUZNETSOV A.M.

MAKHINOV ALEXEI N.

RUZHOV D.A.

English

Research Institute for Humanity and Nature Repository

ASSESSMENT OF THE DISCHARGE OF SOME CHEMICAL SUBSTANCES FROM THE AMUR INTO THE SEAS OF JAPAN AND OKHOTSK MAKmNov A.N., KIM V.I., KUZNETSOV A.M. AND RUZHOV D.A. Institute of Water and Ecology Problems, Fαr Eαste，γn Branch of the Russian Acαdemy of Sciences The Amur river today is one of the most polluted rivers in Russia due to a complex impact of different natural and anthropogenic processes in its basin that influence river water quality. Multi-component disturbance of natural landscapes in the drainage area, indus仕ial,agricultural and community wastewater discharge into the river from Russian and China coupled with river regime changes accelerated the formation of a disas仕ousecological situation in Priamurje. Most intensive changes of water quality take place in the Lower Amur [2] mostly caused by the anthropogenic pollution of the Sungari river. Stil mixing pa抗emof water企omthe Amur and Sungari in different parts of the Amur varies，出uscausing uneven dis仕ibutionof various chemical substances along and across the river. Seasonal changes of ~hemical discharge ion both rivers are also registered. All these factors make it rather difficult to assess the total volume of various chemical substances discharge企omthe Amur into the Seas of Okhotsk and Japan. The Institute of Water and Ecology Problems, FEB RAS (IWEP) carried out river water quality studies in the Lower Amur企omKhabarovsk to Bogorodskoe during of the seasons of 2005 and 2006.百iemain sampling took place near the villages Nizhneleninskoe, Petrovskoe, Nizhnespasskoe, Bogorodskoe, the cities of Khabarovsk and Komsomolsk-on-Amur and the low reaches of the Amgun river. Water samples were analyzed in the laboratories of IWEP FEB RAS, The Analytic Center of the Institute of Tectonics and Geophysics, FEB RAS, research institutes in Ufa and Obninsk cities. Trace metals were analyzed with ICP-MS Elan DRC I Perkin Elmer (USA) mass spec仕ometerwith inductively coupled plasma. The data collected and combined with previous data serve a good basis for deep analysis of the present state and conditions that form Amur water quality, which, in its tum, determines the current state of企eshwater,watershed and seawater ecosystems. The Amur run-off is formed in a vast area ( 1 85 5 000 km2), characterized with diverse natural conditions, which determine a complex background for water chemical composition. Significant run-off irregularities between the seasons and in perennial regime produce high dynamics of major indicators of water qualitative characteristics. Economic activities in the river basin also have a big impact on water quality in the Amur. The Amur is classified as a Far Eastern river type with a prevailing precipitation-formed run-off as its specific feature. The annual share of precipitation in rwトoffformation reaches 90% and provides water abundance in a warm period. Snow source is of secondary importance and spring high water is observed at the end of April and the beginning of May. 49 

Assessment of the discharge of some chemical substances from the Amur into the Seas of Japan and Okhotsk

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Assessment of the discharge of some chemical substances from the Amur into the Seas of Japan and Okhotsk

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