First insights into aliphatic and polycyclic aromatic hydrocarbons (PAHs) in hawksbill turtle (Eretmochelys imbricata) eggs from Persian Gulf, Iran
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View abstract on PubMed
Summary
This summary is machine-generated.Hawksbill turtle eggs in the Persian Gulf contain polycyclic aromatic hydrocarbons (PAHs) and n-alkanes, primarily from petroleum pollution. Yolk had the highest pollutant levels, indicating potential risks to marine life and human health.
Area Of Science
- Marine Biology
- Environmental Chemistry
- Ecotoxicology
Background
- Marine ecosystems face threats from petroleum pollution, impacting wildlife and human health.
- The Persian Gulf is a critical nesting site for hawksbill turtles (Eretmochelys imbricata) and a hotspot for petroleum contamination.
- Understanding pollutant transfer in sea turtle eggs is vital for assessing ecosystem health.
Purpose Of The Study
- To analyze the concentration, source, and composition of polycyclic aromatic hydrocarbons (PAHs) and normal alkanes (n-alkanes) in hawksbill turtle eggs.
- To investigate pollutant distribution within egg components (yolk, albumen, shell).
- To identify the primary sources of detected organic pollutants in the Persian Gulf ecosystem.
Main Methods
- Collection of hawksbill turtle eggs from three nests on the Iranian coast of the Persian Gulf.
- Gas chromatography-mass spectrometry (GC-MS) analysis to detect and quantify 28 PAHs and 19 n-alkanes.
- Comparative analysis of pollutant levels across egg yolk, albumen, and shell samples.
Main Results
- Twenty-eight PAHs and 19 n-alkanes were detected in all egg components.
- Yolk samples exhibited the highest concentrations of total PAHs (ƩPAHs) and total n-alkanes (Ʃn-alkanes).
- Pollutant profiles indicated a predominantly petrogenic source, linked to extensive oil activities in the Persian Gulf.
Conclusions
- Hawksbill turtle eggs in the Persian Gulf accumulate significant levels of PAHs and n-alkanes, primarily from petroleum pollution.
- Eggshells show potential for accumulating organic pollutants, and yolk's high lipid content concentrates contaminants.
- Inter-nest variations suggest dietary and migratory influences on pollutant burdens, necessitating further research on foraging grounds and maternal transfer.
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