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The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites

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The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites. / Parker, Ruth; Bolam, Thi; Barry, Jon; Mason, Claire; Kröger, Silke; Warford, Lee; Silburn, Briony; Sivyer, Dave; Birchenough, Silvana; Mayes, Andrew; Fones, Gary.

In: Science of the Total Environment, Vol. 575, 01.01.2017, p. 1074-1086.

Research output: Contribution to journalArticle

Harvard

Parker, R, Bolam, T, Barry, J, Mason, C, Kröger, S, Warford, L, Silburn, B, Sivyer, D, Birchenough, S, Mayes, A & Fones, G 2017, 'The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites', Science of the Total Environment, vol. 575, pp. 1074-1086. https://doi.org/10.1016/j.scitotenv.2016.09.183

APA

Parker, R., Bolam, T., Barry, J., Mason, C., Kröger, S., Warford, L., ... Fones, G. (2017). The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites. Science of the Total Environment, 575, 1074-1086. https://doi.org/10.1016/j.scitotenv.2016.09.183

Vancouver

Parker R, Bolam T, Barry J, Mason C, Kröger S, Warford L et al. The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites. Science of the Total Environment. 2017 Jan 1;575:1074-1086. https://doi.org/10.1016/j.scitotenv.2016.09.183

Author

Parker, Ruth ; Bolam, Thi ; Barry, Jon ; Mason, Claire ; Kröger, Silke ; Warford, Lee ; Silburn, Briony ; Sivyer, Dave ; Birchenough, Silvana ; Mayes, Andrew ; Fones, Gary. / The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites. In: Science of the Total Environment. 2017 ; Vol. 575. pp. 1074-1086.

Bibtex

@article{1b5369ef714d45a4a7ea754088f73942,
title = "The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites",
abstract = "Assessment of the effects of sediment metal contamination on biological assemblages and function remains a key question in marine management, especially in relation to disposal activities. However, the appropriate description of bioavailable metal concentrations within pore-waters has rarely been reported. Here, metal behaviour and availability at contaminated dredged material disposal sites within UK waters were investigated using Diffusive Gradient in Thin films (DGT). Three stations, representing contrasting history and presence of dredge disposal were studied. Depth profiles of five metals were derived using DGT probes as well as discrete analysis of total metal concentrations from sliced cores. The metals analysed were: iron and manganese, both relevant to sediment biogeochemistry; cadmium, nickel and lead, classified as priority pollutants. DGT time-integrated labile flux profiles of the metals display behaviour consistent with increasingly reduced conditions at depth and availability to DGT (iron and manganese), subsurface peaks and a potential sedimentary source to the water column related to the disposal activity (lead and nickel) and release to pore-water linked to decomposition of enriched phytodetritus (cadmium). DGT data has the potential to improve our current understanding of metal behaviour at impacted sites and is suitable as a monitoring tool. DGT data can provide information on metal availability and fluxes within the sediment at high depth-resolution (5 mm steps). Differences observed in the resulting profiles between DGT and conventional total metal analysis illustrates the significance of considering both total metals and a potentially labile fraction. The study outcomes can help to inform and improve future disposal site impact assessment, and could be complemented with techniques such as Sediment Profile Imagery for improved biologically relevance, spatial coverage and cost-effective monitoring and sampling of dredge material disposal sites. Additionally, the application of this technology could help improve correlative work on biological impacts under national and international auspices when linking biological effects to more biologically relevant metal concentrations.",
keywords = "dredge material, disposal, metal profiles, sediments, DGT (Diffusive Gradient in Thin-37 films), labile, bioavailability",
author = "Ruth Parker and Thi Bolam and Jon Barry and Claire Mason and Silke Kr{\"o}ger and Lee Warford and Briony Silburn and Dave Sivyer and Silvana Birchenough and Andrew Mayes and Gary Fones",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.scitotenv.2016.09.183",
language = "English",
volume = "575",
pages = "1074--1086",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The application of Diffusive Gradients in Thin Films (DGT) for improved understanding of metal behaviour at marine disposal sites

AU - Parker, Ruth

AU - Bolam, Thi

AU - Barry, Jon

AU - Mason, Claire

AU - Kröger, Silke

AU - Warford, Lee

AU - Silburn, Briony

AU - Sivyer, Dave

AU - Birchenough, Silvana

AU - Mayes, Andrew

AU - Fones, Gary

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Assessment of the effects of sediment metal contamination on biological assemblages and function remains a key question in marine management, especially in relation to disposal activities. However, the appropriate description of bioavailable metal concentrations within pore-waters has rarely been reported. Here, metal behaviour and availability at contaminated dredged material disposal sites within UK waters were investigated using Diffusive Gradient in Thin films (DGT). Three stations, representing contrasting history and presence of dredge disposal were studied. Depth profiles of five metals were derived using DGT probes as well as discrete analysis of total metal concentrations from sliced cores. The metals analysed were: iron and manganese, both relevant to sediment biogeochemistry; cadmium, nickel and lead, classified as priority pollutants. DGT time-integrated labile flux profiles of the metals display behaviour consistent with increasingly reduced conditions at depth and availability to DGT (iron and manganese), subsurface peaks and a potential sedimentary source to the water column related to the disposal activity (lead and nickel) and release to pore-water linked to decomposition of enriched phytodetritus (cadmium). DGT data has the potential to improve our current understanding of metal behaviour at impacted sites and is suitable as a monitoring tool. DGT data can provide information on metal availability and fluxes within the sediment at high depth-resolution (5 mm steps). Differences observed in the resulting profiles between DGT and conventional total metal analysis illustrates the significance of considering both total metals and a potentially labile fraction. The study outcomes can help to inform and improve future disposal site impact assessment, and could be complemented with techniques such as Sediment Profile Imagery for improved biologically relevance, spatial coverage and cost-effective monitoring and sampling of dredge material disposal sites. Additionally, the application of this technology could help improve correlative work on biological impacts under national and international auspices when linking biological effects to more biologically relevant metal concentrations.

AB - Assessment of the effects of sediment metal contamination on biological assemblages and function remains a key question in marine management, especially in relation to disposal activities. However, the appropriate description of bioavailable metal concentrations within pore-waters has rarely been reported. Here, metal behaviour and availability at contaminated dredged material disposal sites within UK waters were investigated using Diffusive Gradient in Thin films (DGT). Three stations, representing contrasting history and presence of dredge disposal were studied. Depth profiles of five metals were derived using DGT probes as well as discrete analysis of total metal concentrations from sliced cores. The metals analysed were: iron and manganese, both relevant to sediment biogeochemistry; cadmium, nickel and lead, classified as priority pollutants. DGT time-integrated labile flux profiles of the metals display behaviour consistent with increasingly reduced conditions at depth and availability to DGT (iron and manganese), subsurface peaks and a potential sedimentary source to the water column related to the disposal activity (lead and nickel) and release to pore-water linked to decomposition of enriched phytodetritus (cadmium). DGT data has the potential to improve our current understanding of metal behaviour at impacted sites and is suitable as a monitoring tool. DGT data can provide information on metal availability and fluxes within the sediment at high depth-resolution (5 mm steps). Differences observed in the resulting profiles between DGT and conventional total metal analysis illustrates the significance of considering both total metals and a potentially labile fraction. The study outcomes can help to inform and improve future disposal site impact assessment, and could be complemented with techniques such as Sediment Profile Imagery for improved biologically relevance, spatial coverage and cost-effective monitoring and sampling of dredge material disposal sites. Additionally, the application of this technology could help improve correlative work on biological impacts under national and international auspices when linking biological effects to more biologically relevant metal concentrations.

KW - dredge material

KW - disposal

KW - metal profiles

KW - sediments

KW - DGT (Diffusive Gradient in Thin-37 films)

KW - labile

KW - bioavailability

U2 - 10.1016/j.scitotenv.2016.09.183

DO - 10.1016/j.scitotenv.2016.09.183

M3 - Article

VL - 575

SP - 1074

EP - 1086

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -

ID: 4814636