Distribution and environmental impacts of heavy metals and radioactivity in sediment and seawater samples of the Marmara Sea

Otansev, Pelin; Taşkın, Halim; Başsarı, Asiye; Varinlioğlu, Ahmet

doi:10.1016/j.chemosphere.2016.03.122

Cited by 62 publications

(11 citation statements)

References 37 publications

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“…The average Exch-Zn and Exch-Cd percentages were 51.6% (range: 20.9-90.4%) and 52.2% (range: 11.2-74.5%), respectively. Previous studies demonstrated that the elevated proportions of exchangeable metals originated primarily from human sources (Ji et al, 2019;Otansev et al, 2016) proving support for anthropogenic inputs as the primary source of Zn and Cd in the study watershed. The chemical fractions for Cu showed a distinct distribution from the other metals.…”

Section: Metal Concentrations and Chemical Fraction In Sedimentsmentioning

confidence: 55%

A comprehensive analysis and source apportionment of metals in riverine sediments of a rural-urban watershed

Xia

Zhang

et al. 2020

Journal of Hazardous Materials

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Quantitative assessment of metal sources in sediments is essential for implementation of source control and remediation strategies. This study investigated metal contamination in sediments to assess potential ecological risks and quantify pollutant sources of metals (Cu, Zn, Pb, Cd, Cr, Co and Ni) in the Wen-Rui Tang River watershed. Total and fraction analysis indicated high pollution levels of metals. Zinc and Cd posed high ecological risk based on the risk assessment code, with the highest ecological risk found in the southwestern of the watershed. The positive matrix factorization (PMF) model was highly effective in predicting total metal concentrations and identified three contributing metal sources. An agricultural source (factor 1) contributed highly to Cu (74.1%) and Zn (42.5%), and was most prominent in the west and south-central portions of the watershed. Cd (93.5%) showed a high weighting with industrial sources (factor 2) with a hot spot in the southwest. Factor 3 was identified as a mixed natural and vehicle traffic source that showed large contribution to Cr (65.2%), Ni (63.9%) and Pb (50.7%). Spatial analysis indicated a consistent pattern between PMF-identified factors and suspected metal sources at the watershed scale demonstrating the efficacy of the PMF modeling approach for watershed analysis.

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Section: Metal Concentrations and Chemical Fraction In Sedimentsmentioning

confidence: 55%

A comprehensive analysis and source apportionment of metals in riverine sediments of a rural-urban watershed

Xia

Zhang

et al. 2020

Journal of Hazardous Materials

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“…Natural and anthropogenic radioisotopes can be transported to different distances after different processes and finally accumulate in sediment particles [3][4]. Due to the Chernobyl nuclear power plant accident, the Marmara and the Black Sea region of Turkey was contaminated with high artificial radioisotopes [5]. After the Chernobyl accident, the northeastern of Turkey in particular has been contaminated by artificial radionuclides.…”

Section: Introductionmentioning

confidence: 99%

“…The radioactive cloud resulting from the nuclear accident arrived the territory of Turkey on 5 May 1986 and the country's different regions and ecosystems significantly polluted [6]. Therefore, the determination of the distribution of natural and anthropogenic radionuclides in the environmental environment is extremely important for environmental monitoring, nuclear protection and nuclear forensic studies [5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of radioactive pollution in sediment samples of Borçka Dam Lake, Turkey

Şirin

2019

Cumhuriyet Science Journal

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In this research, the concentrations of natural (226Ra, 232Th and 40K) and anthropogenic (137Cs) radionuclides were measured in sediment samples collected from the Borçka Dam Lake using a high purity germanium detector (HPGe). The activity values ranged from 4.79-21.46, 9.36-20.65, 238.01-721.26 and 0.79-6.81 Bq kg-1 for 226Ra, 232Th, 40K and 137Cs respectively. The average 226Ra, 232Th and 40K activity concentrations calculated for the sediment samples were found to be lower compared to world average values reported by UNSCEAR. In addition, radiological hazard indices were determined and compared with the international permissible values. The results of this study revealed that there is no significant health risk for people exposed to sediment samples in this region.

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“…Örneğin; bal [15], süt [5,16], marketlerde satılan çeşitli yiyecekler [17], balık [18], gıda maddeleri (sebze, tahıl ve meyve) [19] doğal ve yapay radyonüklitlerin aktivite konsantrasyonları incelenen örneklerden bazılardır. Ülkemizde de doğal ve yapay radyonüklitlerin aktivite konsantrasyonlarını belirlemek amacıyla kum [20,21], toprak [22,23], kaya [24], sediment [25,26], gıda maddeleri [27,28,29,30] incelenmiştir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Tuz Örneklerinin Doğal Radyoaktivite Seviyelerinin Belirlenmesi

Eke¹

2017

SAÜ Fen Bilimleri Enstitüsü Dergisi

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Bu çalışmanın amacı bazı ticari tuz örnekleri içindeki doğal ve yapay radyonüklitlerin aktivite konsantrasyonlarını HpGe gama spektrometre sistemi kullanarak belirlemektir. Çalışmada 5-rafine edilmiş, 5-rafine edilmemiş, 1-bulaşık makinesi tuzu olmak üzere toplamda 11 adet ticari tuz örneği incelemiştir. Tuz örnekleri içindeki 226 Ra, 232 Th, 40 K and 137 Cs radyonüklitlerinin aktivite konsantrasyonları, radyum eşdeğer aktivitesi, soğurulan gama doz oranı, yıllık etkin doz eşdeğeri, 226 Ra, 232 Th ve 40 K doğal radyonüklitlerin tuz örneklerinin yetişkinlerde yıllık tüketimden gelen etkin doz değeri, iç tehlike indeksi ve dış tehlike indeksi değerleri hesaplanmıştır. Elde edilen radyum eşdeğer aktivitesi, soğurulan gama doz oranı, yıllık etkin doz eşdeğeri uluslararası raporlarda verilen ortalama değerler ile karşılaştırılmış ve tuz örnekleri için elde edilen değerlerin, uluslararası raporlarda belirtilen ortalama değerlerden düşük olduğu sonucuna ulaşılmıştır. 226 Ra, 232 Th ve 40 K doğal radyonüklitlerin tuz örneklerinin yetişkinlerde yıllık tüketimden gelen etkin doz değeri, uluslararası raporda belirtilen değerden daha yüksektir.

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Distribution and environmental impacts of heavy metals and radioactivity in sediment and seawater samples of the Marmara Sea

Cited by 62 publications

References 37 publications

A comprehensive analysis and source apportionment of metals in riverine sediments of a rural-urban watershed

A comprehensive analysis and source apportionment of metals in riverine sediments of a rural-urban watershed

Evaluation of radioactive pollution in sediment samples of Borçka Dam Lake, Turkey

Tuz Örneklerinin Doğal Radyoaktivite Seviyelerinin Belirlenmesi

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