The relationship between the mercury concentration in fish muscles and scales/fins and its significance

• Authors: Rostislav Červenka , Antonín Bednařík , Josef Komárek , Markéta Ondračková , Pavel Jurajda , Tomáš Vítek , Petr Spurný
• Languages of publication: EN

Abstracts

EN

The determination of mercury in fish typically involves analysis of muscles. For predicting the concentration of mercury in fish muscle on the basis of the analysis of fish scales or fins, the relationship between total mercury concentrations in fish muscles and in fish scales and fins was studied. Mercury content in fish muscles, scales and fins was determined by atomic absorption spectrometry with thermal decomposition of the sample in a flow of oxygen. A number of scale treatments were applied in order to remove impurities and to enhance the prediction quality. For scale treatment, 40 min of washing with DI water in an ultrasonic bath is recommended. A coefficient of determination r2= 0.93 for the relationship between Hg concentrations in muscles and scales was achieved for 40 fish among the different fish species tested (European bream, perch, roach) from the Hamry Reservoir, Czech Republic. With respect to fin sampling, the coefficient of determination r2 for these fish was 0.86. The analysis of fish scales and caudal fins is a useful screening tool for assessing the relative mercury contamination of monitored fish. The method of sampling scales is not suitable for fish species with small scales such as brown trout. [...]

Keywords

EN

Mercury determination; Fish muscle; Scale; Fin

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2011
• Volume: 9
• Issue: 6
• Pages: 1109-1116

Dates

published

1 - 12 - 2011

online

27 - 9 - 2011

Contributors

author

Rostislav Červenka

• Faculty of Science, Department of Chemistry, Masaryk University, 611 37, Brno, Czech Republic

author

Antonín Bednařík

• Faculty of Science, Department of Chemistry, Masaryk University, 611 37, Brno, Czech Republic

author

Josef Komárek

• Faculty of Science, Department of Chemistry, Masaryk University, 611 37, Brno, Czech Republic

author

Markéta Ondračková

• Institute of Vertebrate Biology, Academy of Science of the Czech Republic, 603 65, Brno, Czech Republic

author

Pavel Jurajda

• Institute of Vertebrate Biology, Academy of Science of the Czech Republic, 603 65, Brno, Czech Republic

author

Tomáš Vítek

• Department of Zoology, Fisheries, Hydrobiology and Apiculture, Mendel University, 613 00, Brno, Czech Republic

author

Petr Spurný

• Department of Zoology, Fisheries, Hydrobiology and Apiculture, Mendel University, 613 00, Brno, Czech Republic

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Identifiers

DOI

10.2478/s11532-011-0105-8