Environmental studies at pre-operational and operational stages of nuclear power plants in Italy: Chemical and radioanalytical implications

Queirazza, G.; Guzzi, L.; Ciceri, G.; Frigieri, P.

doi:10.1016/0048-9697(87)90131-8

Cited by 15 publications

(6 citation statements)

References 17 publications

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“…Sea water and suspended matter were collected using a PTFEcoated PVC GO-FLO bottle of 30 litre capacity at 5, 10, 15, 20 and 25 m depth . Filtration (0 .4µm Nuclepore filters) was performed just after the sampling, using a PTFE filtering apparatus, in a class-100 laminar flow field facility (Queirazza et al, 1987).…”

Section: Methodsmentioning

confidence: 99%

“…The exchangeable fraction of each heavy metal in suspended particulate matter was determined by leaching with 0 .3 M HCl and analysing the leachate as outlined above (Queirazza et al, 1987).…”

Section: Methodsmentioning

confidence: 99%

“…The sediments were first leached with 0 .3 M HCl and then totally digested, and the concentrations of the heavy metals determined (Queirazza et al, 1987). Sediment porosity, dry and bulk density were determined according to Ciceri & Martinotti (1988), while the resistivity formation factor was obtained using the method of Ulman & Aller (1982).…”

Section: Methodsmentioning

confidence: 99%

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Geochemical cycling of heavy metals in a marine coastal area: benthic flux determination from pore water profiles and in situ measurements using benthic chambers

et al. 1992

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Concentrations of the heavy metals Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn were measured in sea water, suspended matter, sediments and pore water samples collected in a coastal area of the middle Tyrrhenian Sea . Concentration factors between pore water (extracted from the first centimeter of the sediments) and the overlying sea water (taken 30 cm above the sea bed) were less than 1 for Cr, Cu and Pb, 1-10 for Cd and Ni, 10-100 for Fe and Co, 100-1000 for Mn, and 1-100 for Zn .The benthic fluxes of heavy metals at the sediment-water interface were measured directly using in situ benthic chambers and calculated using Fick's first law during two experimental periods, one in 1986 and the other in 1988 . The fluxes of Cu, Ni, Pb and Zn varied significantly over time ; this appeared to be related to their relatively low (<_ 10) concentration factors . From the benthic chamber experiments, metals with positive fluxes were in the order : Mn > Fe > Co > Cd, while those with negative fluxes were : Zn > Pb > Ni Cu. Fluxes calculated using Fick's Law were : positive -Mn > Fe > Zn (or Zn > Fe) > Ni > Co > Cd, negative fluxes Pb > Cu > Cr .Measured (benthic chamber) and calculated (Fick's first law) fluxes for Co, Cd, Mn, Pb and Fe were comparable within an order of magnitude, although less agreement was found for Cu, Ni and Zn . Removal of Ni and Zn at the sediment-water interface has been proposed to explain the fact that the measured and calculated fluxes have opposite directions for these metals .

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Geochemical cycling of heavy metals in a marine coastal area: benthic flux determination from pore water profiles and in situ measurements using benthic chambers

et al. 1992

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“…The site studied (Ansedonia Bay, middle Tyrrhenian Sea) is described in detail by Queirazza et al (1987) . The sea bed (at 27 m depth) was covered by silty-clay sediments with a total organic carbon content 1 .6% and a total carbon content of 3 .6% .…”

Section: Methodsmentioning

confidence: 99%

Mathematical models for estimating fluxes at the sediment-water interface in benthic chamber experiments

1995

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Experimental data collected by means of benthic chambers have been used to develop simple mathematical models in order to predict heavy metal and non-metal fluxes at the sediment-water interface . In particular, two mathematical models have been applied to Ba, Co, Fe, Pb, Mn and Cu .Both models estimate benthic fluxes by means of Fick's law but they differ in the modelling of partition between liquid and solid phases . The first model, which is appropriate for Ba and Co, assumes that sorption is the most important process in determining partition . The second model, which gives discrete results for Fe and Pb, assumes that precipitation is the most important process determining the time variation of concentrations . Neither model is suitable to explain experimental data for Mn and Cu .This paper demonstrates the benefit of the use of mathematical models in the interpretation of benthic chambers experiments and in the identification of the relevant processes occurring at the sediment-water interface .

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“…The leachable metal fraction is defined as the anthropogenic fraction of metals involved with the sediment particle. Diluted acids have often extracted the leachable fraction (Malo, 1977;Salomons and Forstner, 1980;Hamilton et al y 1984;Queirazza and Guzzi, 1987;Angelidis and Aloupi, 1995). The objective of this study is to determine concentration and distribution of some metals in a series of sediments collected from different sections along Mediterranean Sea, to monitor environmental changes and their health risk.…”

Section: Introductionmentioning

confidence: 99%

Health Risk Assessment in Relation to Heavy Metals Pollution of Western Mediterranean Sea, Egypt

El-Sikaily

2003

Egypt. J. of Aquatic Biolo. and Fish.

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C oncentrations of heavy metals (Mn, Fe, Zn, Cu, Pb, Co, Cr, Ni and Cd) were measured in the sediment collected from 7 stations along west Mediterranean Sea (Sidi-Krir ; open sea , east & west Sidi Krir, Sidi Barrani and El-sallum 1,2, 60m). Also, health risk has been performed in relation to recreational activities at these places, using an exposure assessment model. The results of this study indicated a general moderate or absence of serious pollution in these places due to heavy metals; whereas the concentration of elements found could be mainly due to geological and atmospheric sources. However, the health risk evaluation is useful as a screening methodology for assessing the urgency of sediment remediation actions.

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Environmental studies at pre-operational and operational stages of nuclear power plants in Italy: Chemical and radioanalytical implications

Cited by 15 publications

References 17 publications

Geochemical cycling of heavy metals in a marine coastal area: benthic flux determination from pore water profiles and in situ measurements using benthic chambers

Geochemical cycling of heavy metals in a marine coastal area: benthic flux determination from pore water profiles and in situ measurements using benthic chambers

Mathematical models for estimating fluxes at the sediment-water interface in benthic chamber experiments

Health Risk Assessment in Relation to Heavy Metals Pollution of Western Mediterranean Sea, Egypt

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