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Related Experiment Video

Updated: Jul 1, 2026

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Fish Scales as a Non-Invasive Method for Monitoring Trace and Macroelement Pollution.

Haithem Aib1,2, Herta Czédli3, Edina Baranyai4

  • 1Pál Juhász-Nagy Doctoral School of Biology and Environmental Sciences, University of Debrecen, 4032 Debrecen, Hungary.

Biology
|April 26, 2025
PubMed
Summary

Fish scales from chub and nase effectively indicate aquatic pollution. Elemental analysis reveals species-specific accumulation patterns, highlighting their value for environmental monitoring.

Keywords:
ICP-OESSEMXRFchubnasepollution

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Area of Science:

  • Environmental Science
  • Ecotoxicology
  • Analytical Chemistry

Background:

  • Aquatic ecosystems face increasing pollution from human activities.
  • Effective water quality monitoring is crucial for environmental protection.
  • Non-invasive bioindicators are needed for sustainable ecological assessment.

Purpose of the Study:

  • To evaluate fish scales of chub (Squalius cephalus) and nase (Chondrostoma nasus) as non-invasive bioindicators of trace and macroelement pollution.
  • To analyze elemental composition in fish scales using advanced analytical techniques.
  • To assess the potential of fish scales for interdisciplinary water quality monitoring programs.

Main Methods:

  • Qualitative and quantitative elemental analysis using X-ray fluorescence (XRF).
  • Inductively coupled plasma optical emission spectrometry (ICP-OES) for measuring element concentrations (Ca, K, Mg, Na, P, S, Al, Ba, Cu, Cr, Fe, Mn, Sr, Zn).
  • Scanning electron microscopy (SEM) for examining fish scale microstructures.

Main Results:

  • Significant variability in elemental accumulation was observed in fish scales between chub and nase.
  • Elemental profiles in scales correlate with the ecological characteristics of the fish species.
  • XRF and ICP-OES provided reliable data for elemental quantification in fish scales.

Conclusions:

  • Fish scales of chub and nase serve as valuable non-invasive bioindicators of aquatic pollution.
  • Species-specific ecological traits influence elemental bioaccumulation in fish scales.
  • This non-invasive methodology is a promising tool for comprehensive water quality monitoring.