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Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters

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Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters. / Rodríguez, J.G.; Amouroux, I.; Belzunce-Segarra, M.J. et al.

In: Science of the Total Environment, Vol. 783, 147001, 20.08.2021.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Rodríguez, JG, Amouroux, I, Belzunce-Segarra, MJ, Bersuder, P, Bolam, T, Caetano, M, Carvalho, I, Correia dos Santos, MM, Fones, GR, Gonzalez, J-L, Guesdon, S, Larreta, J, Marras, B, McHugh, B, Menet-Nédélec, F, Menchaca, I, Millán Gabet, V, Montero, N, Nolan, M, Regan, F, Robinson, CD, Rosa, N, Rodrigo Sanz, M, Schintu, M, White, B & Zhang, H 2021, 'Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters', Science of the Total Environment, vol. 783, 147001. https://doi.org/10.1016/j.scitotenv.2021.147001

APA

Rodríguez, J. G., Amouroux, I., Belzunce-Segarra, M. J., Bersuder, P., Bolam, T., Caetano, M., Carvalho, I., Correia dos Santos, M. M., Fones, G. R., Gonzalez, J-L., Guesdon, S., Larreta, J., Marras, B., McHugh, B., Menet-Nédélec, F., Menchaca, I., Millán Gabet, V., Montero, N., Nolan, M., ... Zhang, H. (2021). Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters. Science of the Total Environment, 783, [147001]. https://doi.org/10.1016/j.scitotenv.2021.147001

Vancouver

Rodríguez JG, Amouroux I, Belzunce-Segarra MJ, Bersuder P, Bolam T, Caetano M et al. Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters. Science of the Total Environment. 2021 Aug 20;783:147001. Epub 2021 Apr 9. doi: 10.1016/j.scitotenv.2021.147001

Author

Rodríguez, J.G. ; Amouroux, I. ; Belzunce-Segarra, M.J. et al. / Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters. In: Science of the Total Environment. 2021 ; Vol. 783.

Bibtex

@article{e41497acbf9e49989ec3528bc690b87d,
title = "Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters",
abstract = "The current study evaluates the effect of seawater physico-chemical characteristics on the relationship between the concentration of metals measured by Diffusive Gradients in Thin films (DGT) passive samplers (i.e., DGT-labile concentration) and the concentrations measured in discrete water samples. Accordingly, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to measure the total dissolved metal concentrations in the discrete water samples and the labile metal concentrations obtained by DGT samplers; additionally, lead and cadmium conditional labile fractions were determined by Anodic Stripping Voltammetry (ASV) and total dissolved nickel was measured by Cathodic Stripping Voltammetry (CSV). It can be concluded that, in general, the median ratios of DGT/ICP and DGT/ASV(CSV) were lower than 1, except for Ni (median ratio close to 1) and Zn (higher than 1). This indicates the importance of speciation and time-integrated concentrations measured using passive sampling techniques, which is in line with the WFD suggestions for improving the chemical assessment of waterbodies. It is the variability in metal content in waters rather than environmental conditions to which the variability of the ratios can be attributed. The ratios were not significantly affected by the temperature, salinity, pH, oxygen, DOC or SPM, giving a great confidence for all the techniques used. Within a regulatory context such as the EU Water Framework Directive this is a great advantage, since the simplicity of not needing to use corrections to minimize the effects of environmental variables could help in implementing DGTs within monitoring networks. ",
keywords = "Diffusive gradients in thin-films (DGT), EU Water Framework Directive, Passive samplers, Chemical speciation, Diffusion in solids, Inductively coupled plasma mass spectrometry, Seawater, Thin films, Voltammetry, 'current, Anodic stripping voltammetry, Cathodic stripping voltammetry, Diffusive gradient in thin-film, Diffusive gradients in thin films, EU water framework directive, Metal concentrations, Physicochemical characteristics, Water samples, Environmental regulations, assessment method, concentration (composition), diffusion, European Union, film, gradient analysis, heavy metal, physicochemical property, seawater",
author = "J.G. Rodr{\'i}guez and I. Amouroux and M.J. Belzunce-Segarra and P. Bersuder and T. Bolam and M. Caetano and I. Carvalho and {Correia dos Santos}, M.M. and G.R. Fones and J.-L. Gonzalez and S. Guesdon and J. Larreta and B. Marras and B. McHugh and F. Menet-N{\'e}d{\'e}lec and I. Menchaca and {Mill{\'a}n Gabet}, V. and N. Montero and M. Nolan and F. Regan and C.D. Robinson and N. Rosa and {Rodrigo Sanz}, M. and M. Schintu and B. White and H. Zhang",
year = "2021",
month = aug,
day = "20",
doi = "10.1016/j.scitotenv.2021.147001",
language = "English",
volume = "783",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Assessing variability in the ratio of metal concentrations measured by DGT-type passive samplers and spot sampling in European seawaters

AU - Rodríguez, J.G.

AU - Amouroux, I.

AU - Belzunce-Segarra, M.J.

AU - Bersuder, P.

AU - Bolam, T.

AU - Caetano, M.

AU - Carvalho, I.

AU - Correia dos Santos, M.M.

AU - Fones, G.R.

AU - Gonzalez, J.-L.

AU - Guesdon, S.

AU - Larreta, J.

AU - Marras, B.

AU - McHugh, B.

AU - Menet-Nédélec, F.

AU - Menchaca, I.

AU - Millán Gabet, V.

AU - Montero, N.

AU - Nolan, M.

AU - Regan, F.

AU - Robinson, C.D.

AU - Rosa, N.

AU - Rodrigo Sanz, M.

AU - Schintu, M.

AU - White, B.

AU - Zhang, H.

PY - 2021/8/20

Y1 - 2021/8/20

N2 - The current study evaluates the effect of seawater physico-chemical characteristics on the relationship between the concentration of metals measured by Diffusive Gradients in Thin films (DGT) passive samplers (i.e., DGT-labile concentration) and the concentrations measured in discrete water samples. Accordingly, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to measure the total dissolved metal concentrations in the discrete water samples and the labile metal concentrations obtained by DGT samplers; additionally, lead and cadmium conditional labile fractions were determined by Anodic Stripping Voltammetry (ASV) and total dissolved nickel was measured by Cathodic Stripping Voltammetry (CSV). It can be concluded that, in general, the median ratios of DGT/ICP and DGT/ASV(CSV) were lower than 1, except for Ni (median ratio close to 1) and Zn (higher than 1). This indicates the importance of speciation and time-integrated concentrations measured using passive sampling techniques, which is in line with the WFD suggestions for improving the chemical assessment of waterbodies. It is the variability in metal content in waters rather than environmental conditions to which the variability of the ratios can be attributed. The ratios were not significantly affected by the temperature, salinity, pH, oxygen, DOC or SPM, giving a great confidence for all the techniques used. Within a regulatory context such as the EU Water Framework Directive this is a great advantage, since the simplicity of not needing to use corrections to minimize the effects of environmental variables could help in implementing DGTs within monitoring networks.

AB - The current study evaluates the effect of seawater physico-chemical characteristics on the relationship between the concentration of metals measured by Diffusive Gradients in Thin films (DGT) passive samplers (i.e., DGT-labile concentration) and the concentrations measured in discrete water samples. Accordingly, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to measure the total dissolved metal concentrations in the discrete water samples and the labile metal concentrations obtained by DGT samplers; additionally, lead and cadmium conditional labile fractions were determined by Anodic Stripping Voltammetry (ASV) and total dissolved nickel was measured by Cathodic Stripping Voltammetry (CSV). It can be concluded that, in general, the median ratios of DGT/ICP and DGT/ASV(CSV) were lower than 1, except for Ni (median ratio close to 1) and Zn (higher than 1). This indicates the importance of speciation and time-integrated concentrations measured using passive sampling techniques, which is in line with the WFD suggestions for improving the chemical assessment of waterbodies. It is the variability in metal content in waters rather than environmental conditions to which the variability of the ratios can be attributed. The ratios were not significantly affected by the temperature, salinity, pH, oxygen, DOC or SPM, giving a great confidence for all the techniques used. Within a regulatory context such as the EU Water Framework Directive this is a great advantage, since the simplicity of not needing to use corrections to minimize the effects of environmental variables could help in implementing DGTs within monitoring networks.

KW - Diffusive gradients in thin-films (DGT)

KW - EU Water Framework Directive

KW - Passive samplers

KW - Chemical speciation

KW - Diffusion in solids

KW - Inductively coupled plasma mass spectrometry

KW - Seawater

KW - Thin films

KW - Voltammetry

KW - 'current

KW - Anodic stripping voltammetry

KW - Cathodic stripping voltammetry

KW - Diffusive gradient in thin-film

KW - Diffusive gradients in thin films

KW - EU water framework directive

KW - Metal concentrations

KW - Physicochemical characteristics

KW - Water samples

KW - Environmental regulations

KW - assessment method

KW - concentration (composition)

KW - diffusion

KW - European Union

KW - film

KW - gradient analysis

KW - heavy metal

KW - physicochemical property

KW - seawater

U2 - 10.1016/j.scitotenv.2021.147001

DO - 10.1016/j.scitotenv.2021.147001

M3 - Journal article

VL - 783

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

M1 - 147001

ER -