Monitoring of risk metals in chub (Leuciscus cephalus L.) from the Svitava and Svratka rivers in the urban area of Brno, Czech Republic

Abstract

The aim of this study was to assess the impact of the Brno agglomeration on the distribution of risk elements (Pb, Cd, Cu, Zn, As) in tissues of a total of 50 chub (Leuciscus cephalus L.). Contamination by metals was monitored in fish from different sites on the Svitava and Svratka rivers in the urban agglomeration of Brno in 2008. Metal concentration was determined in the muscle, liver and kidney by high-resolution atomic absorption spectrometry. Electrothermic technique was used to assess lead, cadmium and copper concentrations; zinc content was determined by flame technique and arsenic by hydride generation. The highest concentrations of cadmium, lead, arsenic and zinc in individual tissues, ranked in a descending order as follows: kidney > liver > muscle; for copper it was liver > kidney > muscle. The highest concentrations of cadmium, arsenic and zinc were determined in chub kidney from the locality of Kníničky (1.35 ± 0.97, 0.186 ± 0.076, and 299.7 ± 123.4 mg·kg -1 respectively); the highest concentration of lead was on the Svratka before junction (0.28 ± 0.19 mg·kg -1 ). The highest contamination with risk metals was found in chub from the Svratka. The assessed concentrations have shown minimum participation of the Brno agglomeration in the accumulation of metals. The concentrations of all risk elements in chub from all of the monitored localities do not pose any environmental or health threat. This study updates published data on chub from the Rivers Svitava and Svratka on concentration of risk elements.

Assessment of trace and macroelement accumulation in cyprinid juveniles as bioindicators of aquatic pollution: effects of diets and habitat preferences

“…The highest Zn concentrations can generally be found in the liver 35,84,85 . This revealed that relatively higher Zn concentrations in the gills of a pelagic species could reflect a recent Zn pollution 15,86,87 . Cr and Mn were in moderately and heavily polluted concentrations in the sediments, respectively, while their concentrations did not exceed the CCCs in the water.…”

Fish community of A HEAVILY MODIFIED URBAN STREtCH OF THE River Svratka: fish rescue TRANSFER prior to THE INITIATION OF flood protection CONSTRUCTIONS

“…Nekvapil et al, 2009;Dvořák et al, 2014) and fish tissues (e.g. Lána et al, 2010;Harkabusová et al, 2012) and/or hydrobiological surveys focused on the effect of hydropeaking on macrozoobenthic community (Brabec, 1998(Brabec, , 2000. Relatively few ichthyological studies have been carried out, and these have mainly been centred on the trout fishing grounds upstream (r. km 67-111;Lusk, 1978;Grmela and Spurný, 2010).…”

Analysis of Main Arsenic Species in Canned Fish Marketed in the Czech Republic and Austria

“…Fish consumption in the Czech Republic is very limited compared to coastal states, which may be why this seemingly insignificant source of arsenic in our diet has been omitted so far. To date, only a few studies have been published on the total content of arsenic in the meat of wild and farmed fish from the Czech Republic (see the investigation of chub [24], various fish living in Slezska Harta reservoir [25], carp [26,27], and trout [28]). Information about the arsenic species in food on the Czech market has not yet been published.…”