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Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples

Research output: Contribution to conferencePaper/Powerpoint/Abstract

Standard

Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples. / Hansen, Karin; Thimonier, An; Fortmann, Heike; König, Nils; Luster, Jörg; Marchetto, Aldo; Graf Pannatier, Elisabeth; Schmitt, Maria; Staelens, Jeroen; Verstraeten, Arne; Vesterdal, Lars; Waldner, Peter; Zlindra, Daniel; Zürcher, Alois.

2013. Paper presented at 2nd ICP Forests Scientific Conference, Belgrado, Serbia.

Research output: Contribution to conferencePaper/Powerpoint/Abstract

Harvard

Hansen, K, Thimonier, A, Fortmann, H, König, N, Luster, J, Marchetto, A, Graf Pannatier, E, Schmitt, M, Staelens, J, Verstraeten, A, Vesterdal, L, Waldner, P, Zlindra, D & Zürcher, A 2013, 'Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples', Paper presented at 2nd ICP Forests Scientific Conference, Belgrado, Serbia, 28/05/13 - 29/05/13.

APA

Hansen, K., Thimonier, A., Fortmann, H., König, N., Luster, J., Marchetto, A., ... Zürcher, A. (2013). Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples. Paper presented at 2nd ICP Forests Scientific Conference, Belgrado, Serbia.

Author

Hansen, Karin ; Thimonier, An ; Fortmann, Heike ; König, Nils ; Luster, Jörg ; Marchetto, Aldo ; Graf Pannatier, Elisabeth ; Schmitt, Maria ; Staelens, Jeroen ; Verstraeten, Arne ; Vesterdal, Lars ; Waldner, Peter ; Zlindra, Daniel ; Zürcher, Alois. / Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples. Paper presented at 2nd ICP Forests Scientific Conference, Belgrado, Serbia.

Bibtex

@conference{f2456f4e7aec45289b2b635742716325,
title = "Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples",
abstract = "The chemical composition of solution samples can vary over time due to biological activity in the sample, exchanges and adsorption on the walls of the storage vessel, abiotic particle formation or dissolution. Factors influencing these processes include the initial composition of the sample, e.g. pH, temperature and light conditions, which directly determine the activity of microorganisms such as nitrifiers, storage duration (in the field or the laboratory), cleaning of the storage vessels, and pre-treatment of the samples before analysis (e.g. filtering, acidification). Precipitation, throughfall and soil water regularly sampled in forest monitoring needs to be protected toward possible alterations. A range of storage experiments have been performed both in forests and in laboratories to check the quality of samples when they are stored under different conditions and situations. The first objective was to examine the change in temperature and light along with possible change in chemistry of soil solution, precipitation and throughfall samples during the period they are collected in the forest and whenstockpiled in the laboratory before analysis. The second objective was to recommend methods and storage that diminish possible chemical transformations in solution samples. Depending on the sampling design, solution samples collected in the forest were to various extents subject to ambient air temperature fluctuations during the day and high light exposure. In the summertime the temperature in samples could get unfavorably high whensamples were not protected properly. Our storage experiments showed changes in chemical composition in samples stored for longer periods both in the laboratory and the forest; however, the results suggested that it is most important to reduce the duration of sampling period (i.e. weekly samples instead of bi-weekly or monthly sampling) in the forest.",
author = "Karin Hansen and An Thimonier and Heike Fortmann and Nils K{\"o}nig and J{\"o}rg Luster and Aldo Marchetto and {Graf Pannatier}, Elisabeth and Maria Schmitt and Jeroen Staelens and Arne Verstraeten and Lars Vesterdal and Peter Waldner and Daniel Zlindra and Alois Z{\"u}rcher",
year = "2013",
month = "5",
day = "29",
language = "English",
note = "null ; Conference date: 28-05-2013 Through 29-05-2013",

}

RIS

TY - CONF

T1 - Effects of storage in field and in laboratory on temperature, light and chemistry of forest water samples

AU - Hansen, Karin

AU - Thimonier, An

AU - Fortmann, Heike

AU - König, Nils

AU - Luster, Jörg

AU - Marchetto, Aldo

AU - Graf Pannatier, Elisabeth

AU - Schmitt, Maria

AU - Staelens, Jeroen

AU - Verstraeten, Arne

AU - Vesterdal, Lars

AU - Waldner, Peter

AU - Zlindra, Daniel

AU - Zürcher, Alois

PY - 2013/5/29

Y1 - 2013/5/29

N2 - The chemical composition of solution samples can vary over time due to biological activity in the sample, exchanges and adsorption on the walls of the storage vessel, abiotic particle formation or dissolution. Factors influencing these processes include the initial composition of the sample, e.g. pH, temperature and light conditions, which directly determine the activity of microorganisms such as nitrifiers, storage duration (in the field or the laboratory), cleaning of the storage vessels, and pre-treatment of the samples before analysis (e.g. filtering, acidification). Precipitation, throughfall and soil water regularly sampled in forest monitoring needs to be protected toward possible alterations. A range of storage experiments have been performed both in forests and in laboratories to check the quality of samples when they are stored under different conditions and situations. The first objective was to examine the change in temperature and light along with possible change in chemistry of soil solution, precipitation and throughfall samples during the period they are collected in the forest and whenstockpiled in the laboratory before analysis. The second objective was to recommend methods and storage that diminish possible chemical transformations in solution samples. Depending on the sampling design, solution samples collected in the forest were to various extents subject to ambient air temperature fluctuations during the day and high light exposure. In the summertime the temperature in samples could get unfavorably high whensamples were not protected properly. Our storage experiments showed changes in chemical composition in samples stored for longer periods both in the laboratory and the forest; however, the results suggested that it is most important to reduce the duration of sampling period (i.e. weekly samples instead of bi-weekly or monthly sampling) in the forest.

AB - The chemical composition of solution samples can vary over time due to biological activity in the sample, exchanges and adsorption on the walls of the storage vessel, abiotic particle formation or dissolution. Factors influencing these processes include the initial composition of the sample, e.g. pH, temperature and light conditions, which directly determine the activity of microorganisms such as nitrifiers, storage duration (in the field or the laboratory), cleaning of the storage vessels, and pre-treatment of the samples before analysis (e.g. filtering, acidification). Precipitation, throughfall and soil water regularly sampled in forest monitoring needs to be protected toward possible alterations. A range of storage experiments have been performed both in forests and in laboratories to check the quality of samples when they are stored under different conditions and situations. The first objective was to examine the change in temperature and light along with possible change in chemistry of soil solution, precipitation and throughfall samples during the period they are collected in the forest and whenstockpiled in the laboratory before analysis. The second objective was to recommend methods and storage that diminish possible chemical transformations in solution samples. Depending on the sampling design, solution samples collected in the forest were to various extents subject to ambient air temperature fluctuations during the day and high light exposure. In the summertime the temperature in samples could get unfavorably high whensamples were not protected properly. Our storage experiments showed changes in chemical composition in samples stored for longer periods both in the laboratory and the forest; however, the results suggested that it is most important to reduce the duration of sampling period (i.e. weekly samples instead of bi-weekly or monthly sampling) in the forest.

M3 - Paper/Powerpoint/Abstract

ER -

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