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Horse mane as a possible bioindicator for the assessment of environmental contamination by risk elements
Smékalová, Šárka ; Zlámalová Gargošová, Helena (referee) ; Komendová, Renata (advisor)
This bachelor’s thesis focuses on the determination of trace metals Cd, Cr, Cu, Hg, Ni, Pb, Zn in horse manes and used horse feed. Samples were collected from two locations, and the selected metals were quantified using AAS. The measured Hg concentrations in the horse mane ranged 0.0032–0.0077 mg/kg. Cd concentrations were below the limit of detection in all horse mane samples. Concentrations of Cr ranged 0.312–3.527 mg/kg, Cu concentrations 4.274–7.336 mg/kg, Pb concentrations 0.143–1.403 mg/kg, Ni concentrations 0.611–2.401 mg/kg, and Zn concentrations 37.0–253.2 mg/kg. In the feed samples, Hg concentrations ranged 0.001–0.015 mg/kg. Cadmium was detected only in three feed samples in the range 0.052–0.194 mg/kg. Other risk elements were measured in all feed samples: Cr 3.511–13.195 mg/kg, Cu 1.670–25.241 mg/kg, Pb 0.171–2.709 mg/kg, and Ni 1.106–5.917 mg/kg. Concentrations of Zn in the horse feed ranged 8.6–242.2 mg/kg. Based on the measured data, it is not possible to definitively assess the ability of metals to accumulate in horse manes. It is also not possible to confirm a dependence of the concentration on age, gender, color, or breed of horses, except for more significant recurring differences in gender.
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