Geology, geography and global energy

Scientific and Technical Journal

Dynamics of trace elements in lower Volga river water

2013. №3, pp. 187-194

Bulatkina Yekaterina G. - Engineer of the II Category, OOO Gazprom dobycha Astrakhan, 61а Savushkina st., Astrakhan, Russia, 414000,,

Plakitin Vladimir A.  - Post-graduate student, Astrakhan State University, 1 Shaumjan sq., Astrakhan, Russia, 414000,, plakitin@

Andrianov Vladimir A.  - D.Sc. in Geography, Astrakhan State University, 1, Shaumjan sq., Astrakhan, Russia, 414000,,

The interannual dynamics and the level of the content of microelements in the aquatic environment directly correlates with the hydrological regime of the river and the degree of anthropogenic impact, which is the cause of economic activity. This is characteristic not only for the district of Astrakhan gas complex (AGC), where a given quality of raw materials (content of H2S up to 35%), sour gas emissions, which are composed of heavy metals and waste water, but also in the upstream of the river outside the Astrakhan area. The main sources of pollution of surface waters of the Lower reaches of the Volga river are: river transport, agriculture, waste water of cities, settlements and industrial enterprises. In the si-situation arose the need to identify possible additional influence of the AGC on the quality of surface waters in this region. Water samples for analysis were carried out during the year, taking into account hydrological features R. Volga. In filtered water after its modification solution of nitric acid was determined the content of heavy metals. The spectral analysis was conducted by the method of atomic-absorption spectrometry on the device MGA-915 with metal-graphite atomizer. Analysis of the results showed no significant differences in the distribution of elements in the water of the transit flow The Volga river and in the water surrounding the territory of the AGC. Data of long-term monitoring of the content of the dissolved forms of metals in river discharge Lower reaches of the Volga indicate a small accumulation of them in the ecosystem for a long period of time.

Key words: Environmental monitoring,trace elements,heavy metals,Cd,Pb,Cu,Zn,Fe,Co,Ni,Mn,Al,Hg,p,Volga,spectrum analysis,maximum allowable concentration (MPC)