Condition of bottom sediment in the area of artificial islands of the Kashagan field, Kazakhstan

• Main Authors: K. Kenzhegaliev, A. S. Kanbetov, A. A. Abylgazieva, A. K. Shakhmanova, D. K. Kulbatyrov
• Format: Article
• Language: Russian
• Published: Kamerton 2019-10-01
• Series: Ûg Rossii: Èkologiâ, Razvitie
• Subjects: kazakhstan; kashagan; artificial island; heavy metals; bottom sediment
• Online Access: https://ecodag.elpub.ru/ugro/article/view/1711
• ISSN: 1992-1098; 2413-0958

Aim. The aim of the research was to determine the pollution of bottom sediment  with  heavy  metals  around  artificial  islands  A  and  D,  where  hydrocarbon  raw  materials from the subsalt stratum are being extracted from island D, and where  production has not begun from island A. Investigations were carried out to compare  the content of heavy metals in bottom sediments around these artificial islands.   Material and Methods. The content of heavy metals Cd, Cr, Cu, Fe, Ni, Pb and Zn in  the bottom sediment in the region of artificial islands A and D was studied. Samples  were processed under laboratory conditions by standard methods. Measurement  of the content of heavy metals Cd, Cr, Cu, Fe, Ni and Zn was made using an ICP‐MS  spectrometer,  and  of  Pb  was  made  using  a  ContAA‐600  atomic  absorption  spectrometer with electrometric atomization (with a HydrEA System Batch Mode  HS 55 modular hydride attachment).   Results. In 2017, the average concentration of all studied elements in the region of  island D was found to be higher than in the region of island A.   Conclusion. In all seasons of the research, values in excess of the Maximum Permissible Concentration (MPC) of all pollutants was not found.