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Gintaras Svecevičius, Nijolė Kazlauskienė, Vytautas Kesminas, Robertas Staponkus,
Egidijus Taujanskis, Gintarė Sauliutė
Heavy Metal Accumulation in Fishes of Different Ecological Groups
from Kairiai Landfill Regional Aquatic Ecosystem
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-23, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
The main purpose of this study was to determine heavy metal (HM) accumulation in body tissues (gills, liver and muscle) of different
ecological group fishes [bentophagous (gibel carp and roach) and predatory (pike and perch)] from Kairiai landfill regional aquatic
ecosystem. Test fish were collected during experimental fishing. Heavy metal analysis was performed in accordance with ISO
11047:2004, and Hg analysis – according to ISO 16772:2004 standard procedures. The following HMs were found in fish body tissues:
Cr, Cu, Ni, Zn and Hg, while Pb and Cd content was below the instrument detection limit. The highest amounts were found of Zn, while
the lowest of Ni. Nickel and Cr concentration in bentophagous and liver and muscle as well as Zn and Cu concentration in the gills and
liver of predatory fish (in mg/kg of raw mass) exceeded Lithuanian hygiene standard [maximum-allowable-amount (MAA)] for human
consumption. Correlation (Pearson r) between HM content and their concentration in water and bottom sediments as well as various
physico-chemical parameters have been also investigated. Very strong and averagely strong relationship has been established between Ni
content in bentophagous fish liver and HM concentration in the water and bottom sediments as well as Cl
¯
, HCO3
¯
, Na+
, K+
, NH4
+
;
between Zn content in predatory fish gills and Cl
¯
, HCO3
¯
, Na+
, K+
, NH4
+
, Mg2+
; between Cr content in bentophagous fish liver and HM
concentration in the water as well as Cl
¯
, HCO3
¯
, Na
+
, K+
, NH4
+
, Mg2+
, CO2; between Cu content in bentophagous gills and HM
concentration in the bottom sediments, and weak relationship between Hg content in both bentophagous and predatory fish tissues and
HM concentration in the water, bottom sediments as well as other physico-chemical parameters. Summarizing the obtained results it could
be concluded that Kairiai landfill still remains a serious source of permanent environmental pollution, although it is already closed.
Keywords: Fish; heavy metal pollution; accumulation; landfill leachate.
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