210Pb mass accumulation rates in the depositional area of the Magra River (Mediterranean Sea, Italy)

Delbono, Ivana; Barsanti, Mattia; Schirone, Antonio; Conte, Fabio; Delfanti, Roberta

doi:10.1016/j.csr.2016.05.010

Cited by 18 publications

(2 citation statements)

References 60 publications

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“…Radiometric analyses were performed by gamma spectrometry, using two ORTEC AMETEK Gamma-X HPGe coaxial radiation detectors. Calibration and measurement procedures have been described in Delbono et al ( 2016 ). The quality check performances for both detectors are presented in Table ESM 1 (Electronic Supplementary Material).…”

Section: Methodsmentioning

confidence: 99%

Heavy metal background levels and pollution temporal trend assessment within the marine sediments facing a brownfield area (Gulf of Pozzuoli, Southern Italy)

Armiento

Barsanti

Caprioli

et al. 2022

Environ Monit Assess

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In this study, site-specific natural background levels (NBLs) were determined for 18 elements (Al, As, Be, Cd, Co, Cu, Cr, Fe, Hg, K, Mn, Mo, Ni, Pb, Tl, U, V, and Zn) in two sediment cores collected offshore the Bagnoli-Coroglio brownfield site (Gulf of Pozzuoli, southern Italy) to accurately assess the degree of contamination and the historical trends in Heavy Metals (HMs) enrichment. This objective was pursued taking in account the high temporal and spatial variability of the geochemical properties of the area due to the local geothermal activity. Moreover, the temporal variation of Polycyclic Aromatic Hydrocarbons (PAHs) was investigated.226Ra was used as an extraordinary marker to confirm 210Pb dating. It especially allowed defining the geochronological framework of the sediment core closer the brownfield up to around 1500, providing compelling support to correlate the investigated elements’ occurrences with natural geogenic dynamic. Sediment samples were accurately dated and analyzed for chemical and particle size composition. The contamination factor (Cf) and the pollution load index (PLI) showed very high enrichment of Cd, Cu, Hg, Pb, and Zn. The contamination profiles of HMs and PAHs follow the same pattern in both sediment cores, increasing from deep to upper layers. The highest contamination levels for HMs and PAHs were observed between 10 and 30 cm, corresponding to the periods of most intense industrial activity. Decreasing trends of pollutants were observed in the surface layers (0–10 cm), probably affected by a natural attenuation process due to the cessation of industrial activities.

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Section: Methodsmentioning

confidence: 99%

Heavy metal background levels and pollution temporal trend assessment within the marine sediments facing a brownfield area (Gulf of Pozzuoli, Southern Italy)

Armiento

Barsanti

Caprioli

et al. 2022

Environ Monit Assess

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“…The excess 210 Pb activity ( 210 Pb ex ) was calculated as the difference between the total 210 Pb and 226 Ra. Details on calibrations, quality checks, and measurements have been presented elsewhere (Delbono et al, 2016 ). The 210 Pb dating method has been widely used to establish geochronology in marine sediments on timescales of ~110 years (Sanchez-Cabeza & Ruiz-Fernández, 2012 , and references therein).…”

Section: Methodsmentioning

confidence: 99%

Heavy metal content and potential ecological risk assessment of sediments from Khnifiss Lagoon National Park (Morocco)

Tnoumi

Angelone

Armiento

et al. 2022

Environ Monit Assess

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Coastal lagoons are important but sensitive environments, being transitional zones between land and sea. The Khnifiss lagoon is the most important desert wetland in Morocco, but little data have been produced concerning heavy metal geochemistry and enrichments in the sediments. Therefore, 26 surface sediments (15 intertidal and 11 subtidal) and 2 sediment cores were collected in 2016 and analyzed for a selection of heavy metals. The data were processed to assess the degree of contamination and the corresponding potential ecological risk, using several accumulation/enrichment indices, and the singular and multi-metal risk indices. Mean concentrations in the bottom layers of the two cores, dating from a pre-industrial age according to geochronological analysis, were used as the local geochemical background. The resulting values were on the whole lower than those reported for other areas of the northeastern coast of Morocco. Multivariate statistics were also applied to better understand relationships among variables (metals and other geochemical parameters) and to reveal similarities among sample groups. The results showed that, although the lagoon is not yet affected by significant anthropogenic influences, small enrichments can be recognized, especially for Ni and Cd. The cause may be related to the proximity to the main national highway, the vehicles and machinery used in the saltworks located in the area, and the small harbors used principally for fishing. In addition, industrial emissions from the Atlantic coast of Morocco and adjacent countries can be reasonably attributed as additional contributors to the enrichments. In terms of potential ecological risk, Cd shows the greatest impact compared to the other metals investigated.

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A comparative study on digestion methods for 210Po determinations by alpha spectrometry on peat bog samples

Kelemen,

Savin,

Timar-Gabor

et al. 2023

J Radioanal Nucl Chem

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210Pb mass accumulation rates in the depositional area of the Magra River (Mediterranean Sea, Italy)

Cited by 18 publications

References 60 publications

Heavy metal background levels and pollution temporal trend assessment within the marine sediments facing a brownfield area (Gulf of Pozzuoli, Southern Italy)

Heavy metal background levels and pollution temporal trend assessment within the marine sediments facing a brownfield area (Gulf of Pozzuoli, Southern Italy)

Heavy metal content and potential ecological risk assessment of sediments from Khnifiss Lagoon National Park (Morocco)

A comparative study on digestion methods for 210Po determinations by alpha spectrometry on peat bog samples

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