TY  - JOUR
T1  - Heavy Metals of Benthal Deposits of Some Lakes of Khanty-Mansi
Autonomous District-Yugra, Surgutsky Region
AU - Shigabaeva, Gulnara 
JO  - Research Journal of Applied Sciences
VL  - 11
IS  - 12
SP  - 1569
EP  - 1571
PY  - 2016
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2016.1569.1571
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2016.1569.1571
KW  - benthal deposits
KW  -Heavy metals
KW  -clarke
KW  -gross content
KW  -Russia
AB  - Experimental data were obtained on the gross content as well as on the content of movable forms of
heavy metals, cuprum, manganese, cobalt, nickel, zinc, chromium in benthal deposits of some lakes of
Khanty-Mansi Autonomous District-Yugra, Surgutsky Region. Elements under study in the order of mineral
dressing of benthal deposits can be arranged in the descending sequence: Cr>Cu>Zn>Co>Ni>Mn. Calculated
clarkes of concentration (K<SUB>k</SUB> ) for microelements were: for Mn-0.041; Ni-0.39; Co-0.43; Zn-0.44; Cu-0.53; Cr-0.73. The local geochemical background of benthal deposits is not exceeded for all studied elements. It was elicited
that up to 68% of Co, 51% of Mn up to 30% of Zn, 8.4% of Cr, 5.5% of Ni and 3.2 % of Cu are in the movable
form ejected with acetate-ammonium buffer solution (pH = 4.8). Contents of heavy metals were determined with
the use of flame Atomic Absorption Spectrophotometry (AAS) method on AA 6300 spectrophotometer of
&quot;Shimadzu&quot; company.
ER  -