Monitoring of Environmental Hg Occurrence in Tunisian Coastal Areas

Total mercury (Hg) was determined in 450 environmental samples (seawater, sediment plant and fish) from five Mahdia coastal areas (Tunisia). Tolerable Weekly Intake% (TWI) values, according to the European Food Safety Authority (EFSA), were calculated based on the average metal concentration in fish...

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Vydané v:International journal of environmental research and public health Ročník 18; číslo 10; s. 5202
Hlavní autori: Jebara, Amel, Lo Turco, Vincenzo, Faggio, Caterina, Licata, Patrizia, Nava, Vincenzo, Potortì, Angela Giorgia, Crupi, Rosalia, Mansour, Hedi Ben, Di Bella, Giuseppa
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Switzerland MDPI AG 13.05.2021
MDPI
Predmet:
Animals
Coasts
Consumption
Environmental Monitoring
Fish
Fishes
Food contamination & poisoning
Mercury - analysis
Nervous system
Neurotoxicity
Seawater
Sediments
Toxicity
Tunisia
Water Pollutants, Chemical - analysis
Tunisia
United States > US
Posidonia oceanica
tolerable weekly intake
Sarpa salpa
Sparus aurata
Mahdia coastal
Hg
ISSN:1660-4601, 1661-7827, 1660-4601
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Shrnutí:Total mercury (Hg) was determined in 450 environmental samples (seawater, sediment plant and fish) from five Mahdia coastal areas (Tunisia). Tolerable Weekly Intake% (TWI) values, according to the European Food Safety Authority (EFSA), were calculated based on the average metal concentration in fish and the average weekly fish consumption rate. Hg was accumulated mainly in fish and in Posidonia oceanica leaves. Hg in sediment ranged from 1.88 μg/kg dry weight (d.w.) to 7.48 μg/kg d.w., while it was between 0.32 μg/kg and 0.19 μg/kg in seawaters. Our study showed high concentration in Posidonia oceanica in S3 (plant = 16.76 ± 4.48 μg/kg d.w.) as compared to those in S4 sites (plant = 5.33 ± 0.05 μg/kg d.w.). Concentrations for S. aurata and S. salpa in the Rejiche area exceeded the EC 1881/2006 legislation with values of 1.9 mg/kg and 2.5 mg/kg, respectively, and consumers may be exposed to high concentrations of Hg that exceeds the EFSA. The results showed that the fish species should be constantly monitored due to their TWI% of 154.5% for S. aurata and 209.8% S. salpa respectively.
Bibliografia:ObjectType-Article-1
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These authors contribute equally.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph18105202