Skip to content
Back to outputs

Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study

Research output: Contribution to journalArticle

Standard

Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study. / Turner, Geraldine S. C.; Mills, Graham; Bowes, Michael J.; Burnett, Jonathan L.; Amos, Sean; Fones, Gary.

In: Environmental Science: Processes & Impacts, Vol. 16, No. 3, 2014, p. 393-403.

Research output: Contribution to journalArticle

Harvard

Turner, GSC, Mills, G, Bowes, MJ, Burnett, JL, Amos, S & Fones, G 2014, 'Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study', Environmental Science: Processes & Impacts, vol. 16, no. 3, pp. 393-403. https://doi.org/10.1039/c3em00574g

APA

Turner, G. S. C., Mills, G., Bowes, M. J., Burnett, J. L., Amos, S., & Fones, G. (2014). Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study. Environmental Science: Processes & Impacts, 16(3), 393-403. https://doi.org/10.1039/c3em00574g

Vancouver

Turner GSC, Mills G, Bowes MJ, Burnett JL, Amos S, Fones G. Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study. Environmental Science: Processes & Impacts. 2014;16(3):393-403. https://doi.org/10.1039/c3em00574g

Author

Turner, Geraldine S. C. ; Mills, Graham ; Bowes, Michael J. ; Burnett, Jonathan L. ; Amos, Sean ; Fones, Gary. / Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study. In: Environmental Science: Processes & Impacts. 2014 ; Vol. 16, No. 3. pp. 393-403.

Bibtex

@article{4021ed3965a54b41be1ff31b542774cf,
title = "Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study",
abstract = "The performance of the diffusive gradient in thin film technique (DGT) was evaluated as a tool for the long-term monitoring of water quality, using uranium as a case study. DGTs with a Metsorb™ (TiO2) sorbent were deployed consecutively at two alkaline freshwater sites, the River Enborne and the River Lambourn, UK for seven-day intervals over a five-month deployment period to obtain time weighted average concentrations. Weekly spot samples were taken to determine physical and chemical properties of the river water. Uranium was measured in these spot samples and after extraction from the DGT devices. The accuracy of the DGT device time weighted average concentrations to averaged spot water samples in both rivers was 86{\%} (27 to 205{\%}). The DGT diffusive boundary layer (DBL) (0.037–0.141 cm – River Enborne and 0.062–0.086 cm – River Lambourn) was affected by both water flow and biofouling of the diffusion surface. DBL thicknesses found at both sites were correlated with flow conditions with an R2 value of 0.614. Correlations were also observed between the DBL thickness and dissolved organic carbon (R2 = 0.637) in the River Lambourn, indicating the potential presence of a complex zone of chemical interactions at the surface of the DGT. The range of DBL thicknesses found at the River Lambourn site were also attributed to of the development of macro-flora on the active sampling surface, indicating that the DBL thickness cannot be assumed to be water flow dependant only. Up to a 57{\%} under-estimate of uranium DGT concentration was observed compared to spot sample concentrations if the DBL was neglected. This study has shown that the use of DGT can provide valuable information in environmental monitoring schemes as part of a ‘tool-box’ approach when used alongside conventional spot sampling methods.",
author = "Turner, {Geraldine S. C.} and Graham Mills and Bowes, {Michael J.} and Burnett, {Jonathan L.} and Sean Amos and Gary Fones",
note = "From FAQ for journal's website: {"}What does RSC define as an {"}accepted author version{"} of an article? The author version of an article is the author's revised version that has been accepted for publication.{"} In the case of this publisher, the author was required to write the actual peer review changes (not just the final proof-reading changes) directly into the publisher's template. Therefore, the attached version (which doesn't include the final publication details) is taken to be the post-print. Please contact openaccess@port.ac.uk with any questions.",
year = "2014",
doi = "10.1039/c3em00574g",
language = "English",
volume = "16",
pages = "393--403",
journal = "Environmental Science: Processes & Impacts",
issn = "2050-7887",
publisher = "Royal Society of Chemistry",
number = "3",

}

RIS

TY - JOUR

T1 - Evaluation of DGT as a long-term water quality monitoring tool in natural waters; uranium as a case study

AU - Turner, Geraldine S. C.

AU - Mills, Graham

AU - Bowes, Michael J.

AU - Burnett, Jonathan L.

AU - Amos, Sean

AU - Fones, Gary

N1 - From FAQ for journal's website: "What does RSC define as an "accepted author version" of an article? The author version of an article is the author's revised version that has been accepted for publication." In the case of this publisher, the author was required to write the actual peer review changes (not just the final proof-reading changes) directly into the publisher's template. Therefore, the attached version (which doesn't include the final publication details) is taken to be the post-print. Please contact openaccess@port.ac.uk with any questions.

PY - 2014

Y1 - 2014

N2 - The performance of the diffusive gradient in thin film technique (DGT) was evaluated as a tool for the long-term monitoring of water quality, using uranium as a case study. DGTs with a Metsorb™ (TiO2) sorbent were deployed consecutively at two alkaline freshwater sites, the River Enborne and the River Lambourn, UK for seven-day intervals over a five-month deployment period to obtain time weighted average concentrations. Weekly spot samples were taken to determine physical and chemical properties of the river water. Uranium was measured in these spot samples and after extraction from the DGT devices. The accuracy of the DGT device time weighted average concentrations to averaged spot water samples in both rivers was 86% (27 to 205%). The DGT diffusive boundary layer (DBL) (0.037–0.141 cm – River Enborne and 0.062–0.086 cm – River Lambourn) was affected by both water flow and biofouling of the diffusion surface. DBL thicknesses found at both sites were correlated with flow conditions with an R2 value of 0.614. Correlations were also observed between the DBL thickness and dissolved organic carbon (R2 = 0.637) in the River Lambourn, indicating the potential presence of a complex zone of chemical interactions at the surface of the DGT. The range of DBL thicknesses found at the River Lambourn site were also attributed to of the development of macro-flora on the active sampling surface, indicating that the DBL thickness cannot be assumed to be water flow dependant only. Up to a 57% under-estimate of uranium DGT concentration was observed compared to spot sample concentrations if the DBL was neglected. This study has shown that the use of DGT can provide valuable information in environmental monitoring schemes as part of a ‘tool-box’ approach when used alongside conventional spot sampling methods.

AB - The performance of the diffusive gradient in thin film technique (DGT) was evaluated as a tool for the long-term monitoring of water quality, using uranium as a case study. DGTs with a Metsorb™ (TiO2) sorbent were deployed consecutively at two alkaline freshwater sites, the River Enborne and the River Lambourn, UK for seven-day intervals over a five-month deployment period to obtain time weighted average concentrations. Weekly spot samples were taken to determine physical and chemical properties of the river water. Uranium was measured in these spot samples and after extraction from the DGT devices. The accuracy of the DGT device time weighted average concentrations to averaged spot water samples in both rivers was 86% (27 to 205%). The DGT diffusive boundary layer (DBL) (0.037–0.141 cm – River Enborne and 0.062–0.086 cm – River Lambourn) was affected by both water flow and biofouling of the diffusion surface. DBL thicknesses found at both sites were correlated with flow conditions with an R2 value of 0.614. Correlations were also observed between the DBL thickness and dissolved organic carbon (R2 = 0.637) in the River Lambourn, indicating the potential presence of a complex zone of chemical interactions at the surface of the DGT. The range of DBL thicknesses found at the River Lambourn site were also attributed to of the development of macro-flora on the active sampling surface, indicating that the DBL thickness cannot be assumed to be water flow dependant only. Up to a 57% under-estimate of uranium DGT concentration was observed compared to spot sample concentrations if the DBL was neglected. This study has shown that the use of DGT can provide valuable information in environmental monitoring schemes as part of a ‘tool-box’ approach when used alongside conventional spot sampling methods.

U2 - 10.1039/c3em00574g

DO - 10.1039/c3em00574g

M3 - Article

VL - 16

SP - 393

EP - 403

JO - Environmental Science: Processes & Impacts

JF - Environmental Science: Processes & Impacts

SN - 2050-7887

IS - 3

ER -

ID: 1147478