Radioactivity and metal concentrations in marine sediments associated with mining activities in Ierissos Gulf, North Aegean Sea, Greece

Pappa, Filothei Κ.; Tsabaris, C.; Ioannidou, A.; Patiris, D. L.; Kaberi, Helen; Pashalidis, Ioannis; Eleftheriou, G.; Vlastou, R.

doi:10.1016/j.apradiso.2016.07.006

Cited by 55 publications

(25 citation statements)

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“…The content of Fe 2 O 3 ranges from 5.5% to 13.6% with average 9% and the content of MgO range from 5% to 8.3% with average 6.2%. All element contents are concordant with the obtained results by [26].…”

Section: Chemical Analysis Using Xrfsupporting

confidence: 92%

“…Oxides of major elements of studied samples were carried out using EDXRF (ARL Quant’X manufactured by Thermo Fisher Scientific Seller, USA) and listed in Table 4. There is a strong correlation between rich uranium content and chemical composition especially iron and manganese oxides due to their high ability to absorb uranium [25,26]. The content of Fe 2 O 3 ranges from 5.5% to 13.6% with average 9% and the content of MgO range from 5% to 8.3% with average 6.2%.…”

Section: Chemical Analysis Using Xrfmentioning

confidence: 99%

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Assessment of radiological parameters and metal contents in soil and stone samples from Harrat Al Madinah, Saudi Arabia

2018

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Section: Chemical Analysis Using Xrfsupporting

confidence: 92%

Section: Chemical Analysis Using Xrfmentioning

confidence: 99%

Assessment of radiological parameters and metal contents in soil and stone samples from Harrat Al Madinah, Saudi Arabia

2018

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“…Such high Hg levels found in the Mediterranean albacore may be attributed to the pollution from Hg mining wastewater in the sea [54]. Also, the above of 0.500 mg kg −1 wet wt Hg concentrations of the present study found mostly in the NASSA albacore samples, could be derived due to anthropogenic pressure along North Aegean coastline, in which exist coastal mining operations in Stratoni bay as well as several highly populated cities on the coastal zone (e.g., Thessaloniki, Kavala, Alexandroupolis), with widely industrialized and urbanized areas [28,29,30,31,32]. Furthermore, Evros, Nestos, Strymon, Axios, Loudias, and Aliakmonas river discharges, containing both natural and anthropogenic Hg, can contribute to increasing Hg contents of NASSA albacore.…”

Section: Discussionmentioning

confidence: 79%

“…The Aegean Sea (Figure 1) is a semi-enclosed system with ever-growing anthropogenic pressure along its coastline [28,29] that features several highly populated cities with widely urbanized and industrialized areas. Evidences of pollution exist regarding toxic heavy metals, e.g., [30,31,32] and nutrients e.g., [33].…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Stamatis¹,

Kamidis²,

Pigada³

et al. 2019

IJERPH

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Aegean Sea albacore (T. alalunga), fresh or processed, is marketed locally in Greece or exported, mainly to Japan, Italy, Spain, and France. To provide information for consumers and biomonitoring programs and assess the potential human health risks, concentrations of mercury (Hg), cadmium (Cd) and lead (Pb) were determined in albacore edible muscle samples from two fishing grounds of the Aegean Sea, Greece via graphite furnace atomic absorption spectrometry (GF-AAS). Of the 82 individuals, 28 contained Cd and three contained Pb above the permissible limits set by the European Union (0.1 mg kg−1 wet wt and 0.3 mg kg−1 wet wt, respectively). None of the samples contained mercury above the limit (1.0 mg kg−1 wet wt). Potential health risks to human via dietary intake of albacore were estimated by the total target hazard quotients (TTHQs), which indicated that the consumers could acquire health problems due to consumption of Aegean Sea albacore. Thus consequently, concentrations of toxic heavy metals in albacore, especially mercury, must be monitored regularly and comprehensively with respect to consumer health.

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“…Os metais e os radionuclídeos são em muitos casos adsorvidos preferencialmente a grãos de pequena granulometria em razão da sua maior área superficial e maior quantidade de matéria orgânica Pappa et al, 2016). Metais, por exemplo, como o chumbo, tendem a estar majoritariamente associado à fração argila e silte dos sedimentos.…”

Section: Bário Estrôncio E Vanádio E Suas Relações Com Rádio E Chumunclassified

Estudo dos radionuclídeos naturais - Ra-226, Ra-228 e Pb-210 - em alguns registros sedimentares do Atlântico Sudoeste ao longo do Holoceno

Costa¹

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Os radionuclídeos naturais das séries radioativas do 238 U e do 232 Th têm sido aplicados com sucesso como traçadores de processos ambientais atuais e mudanças climáticas. O 210 Pb (meia-vida de 22,2 anos) é empregado na técnica de datação geocronológica de testemunhos sedimentares dos últimos 100-150 anos e na determinação de taxa de sedimentação. As concentrações dos isótopos 226 Ra e 228 Ra (meia-vida de 1.600 anos e 5,75 anos, respectivamente) auxiliam no cálculo das atividades de 210 Pb em excesso no sedimento e auxiliam na identificação de processos marinhos importantes, como, por exemplo, a intrusão de água subterrânea. Neste trabalho foram quantificadas as concentrações de atividade de 226 Ra, 228 Ra e 210 Pb em quatro testemunhos marinhos curtos coletados desde a plataforma continental até o talude superior do Atlântico Sudoeste. A partir dos resultados obtidos, as taxas de sedimentação em cada local e as idades de cada fatia de sedimento foram determinadas pelo método de datação geocronológica com 210 Pb. As amostras sedimentares sofreram digestão total ácida em microondas. A separação radioquímica sequencial de 226 Ra, 228 Ra e 210 Pb foi realizada com a obtenção dos precipitados de Ba(Ra)SO 4 e PbCrO 4. As medidas α total do 226 Ra e β total do 228 Ra e do 210 Pb a partir dos precipitados foram feitas em um detector proporcional de fluxo gasoso de baixa radiação de fundo. Com relação aos testemunhos analisados, as concentrações de atividade dos radionuclídeos variaram de 14 Bq.kg-1 a 154 Bq.kg-1 para o 226 Ra; de 17 Bq.kg-1 a 45 Bq.kg-1 para o 228 Ra; de 20 Bq.kg-1 a 2.073 Bq.kg-1 para o 210 Pb. Valores altos de 210 Pb foram encontrados no topo de todos os perfis sedimentares, proveniente principalmente da deposição atmosférica. Os dados coletados neste trabalho estão na mesma faixa de grandeza de outros relacionados a medições de 226 Ra, 228 Ra, 210 Pb em áreas não contaminadas do Oceano Atlântico Sudoeste. As taxas de sedimentação diminuíram com o aumento da profundidade de coluna d'água, cujos valores variaram de 0,049 cm.ano-1 a 0,40 cm.ano-1 .

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Radioactivity and metal concentrations in marine sediments associated with mining activities in Ierissos Gulf, North Aegean Sea, Greece

Cited by 55 publications

References 56 publications

Assessment of radiological parameters and metal contents in soil and stone samples from Harrat Al Madinah, Saudi Arabia

Assessment of radiological parameters and metal contents in soil and stone samples from Harrat Al Madinah, Saudi Arabia

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Estudo dos radionuclídeos naturais - Ra-226, Ra-228 e Pb-210 - em alguns registros sedimentares do Atlântico Sudoeste ao longo do Holoceno

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