Biological indicators for environmental quality monitoring of marine sediment in Suez Gulf, Egypt
| Autor: | Doaa Gharieb Ghoniem, Eslam El-Nahrery, Amany El-Sikaily, Manal A. Emam |
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| Rok vydání: | 2021 |
| Předmět: |
Urease
SH1-691 010501 environmental sciences Aquatic Science Significant negative correlation Oceanography 01 natural sciences law.invention Metal law Alkaline phosphatase Aquaculture. Fisheries. Angling GE1-350 Suez Gulf Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Water Science and Technology biology Chemistry Sediment 04 agricultural and veterinary sciences Enzyme assay Bioavailability Environmental sciences Polluted and unpolluted sediment Heavy metal visual_art Environmental chemistry 040102 fisheries visual_art.visual_art_medium biology.protein 0401 agriculture forestry and fisheries Egypt Atomic absorption spectroscopy |
| Zdroj: | Egyptian Journal of Aquatic Research, Vol 47, Iss 2, Pp 125-132 (2021) |
| ISSN: | 1687-4285 |
| Popis: | A comparative field study was performed to assess the heavy metals contamination in surficial sediments of highly and less polluted zones at the northern part of the Suez Gulf. In addition, to highlight the relationship among metal contamination and enzyme activity. Seven heavy metals Mn, Fe, Pb, Cd, Zn, Ni, and Cu were analyzed using atomic absorption spectrophotometer. The activity of enzymes (alkaline phosphatase and urease) was estimated in the sediment samples. The statistical results showed that there were high significant differences at p ≤ 0.01 among Cu, Pb, Cd, Ni, Mn and Zn between highly polluted and less polluted sediments. Urease activity had no significant relationship with the tested metals concentrations. Cd, Cu, Mn, Ni, Pb and Zn may inhibit alkaline phosphatase activity. Alkaline phosphatase activity showed high significant difference at p ≤ 0.01 between summer and winter seasons in highly polluted sediment. Moreover, there was significant seasonal difference in Pb concentration at p ≤ 0.01 in the same category. Correlations of the enzymes with each metal showed that alkaline phosphatase activity had significant negative correlation coefficients (r = −0.55, −0.49, −0.27, −0.37, −0.37, and −0.60) with Cu, Cd, Fe, Ni, Zn and Pb respectively in winter, but only with Zn (r = −0.46) in summer season. As a result, ALP activity can possibly be used as a predictor and sensitive indicator of heavy metals bioavailability in marine sediments. |
| Databáze: | OpenAIRE |
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