Michelsen, Nils ; Laube, Gerrit ; Friesen, Jan ; Weise, Stephan M. ; Bait Said, Ali Bakhit Ali ; Müller, Thomas (2019)
Technical note: A microcontroller-based automatic rain sampler for stable isotope studies.
In: Hydrology and Earth System Sciences, 2019, 23 (6)
doi: 10.5194/hess-23-2637-2019
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Automatic samplers represent a convenient way to gather rain samples for isotope (δ 18O and δ 2H) and water quality analyses. Yet, most commercial collectors are expensive and do not reduce post-sampling evaporation and the associated isotope fractionation sufficiently. Thus, we have developed a microcontroller-based automatic rain sampler for timer-actuated collection of integral rain samples. Sampling periods are freely selectable (minutes to weeks), and the device is low-cost, simple, robust, and customizable. Moreover, a combination of design features reliably minimizes evaporation from the collection bottles. Evaporative losses were assessed by placing the pre-filled sampler in a laboratory oven with which a diurnal temperature regime (21–31 ◦C) was simulated for 26 weeks. At the end of the test, all bottles had lost less than 1 % of the original water amount, and all isotope shifts were within the analytical precision. These results show that even multi-week field deployments of the device would result in rather small evaporative mass losses and isotope shifts. Hence, we deem our sampler a useful addition to devices that are currently commercially available and/or described in the scientific literature. To enable reproduction, all relevant details on hard- and software are openly accessible.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Michelsen, Nils ; Laube, Gerrit ; Friesen, Jan ; Weise, Stephan M. ; Bait Said, Ali Bakhit Ali ; Müller, Thomas |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Technical note: A microcontroller-based automatic rain sampler for stable isotope studies |
| Sprache: | Englisch |
| Publikationsjahr: | 2019 |
| Publikationsdatum der Erstveröffentlichung: | 2019 |
| Verlag: | Copernicus |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Hydrology and Earth System Sciences |
| Jahrgang/Volume einer Zeitschrift: | 23 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.5194/hess-23-2637-2019 |
| URL / URN: | https://doi.org/10.5194/hess-23-2637-2019 |
| Herkunft: | Zweitveröffentlichung aus gefördertem Golden Open Access |
| Kurzbeschreibung (Abstract): | Automatic samplers represent a convenient way to gather rain samples for isotope (δ 18O and δ 2H) and water quality analyses. Yet, most commercial collectors are expensive and do not reduce post-sampling evaporation and the associated isotope fractionation sufficiently. Thus, we have developed a microcontroller-based automatic rain sampler for timer-actuated collection of integral rain samples. Sampling periods are freely selectable (minutes to weeks), and the device is low-cost, simple, robust, and customizable. Moreover, a combination of design features reliably minimizes evaporation from the collection bottles. Evaporative losses were assessed by placing the pre-filled sampler in a laboratory oven with which a diurnal temperature regime (21–31 ◦C) was simulated for 26 weeks. At the end of the test, all bottles had lost less than 1 % of the original water amount, and all isotope shifts were within the analytical precision. These results show that even multi-week field deployments of the device would result in rather small evaporative mass losses and isotope shifts. Hence, we deem our sampler a useful addition to devices that are currently commercially available and/or described in the scientific literature. To enable reproduction, all relevant details on hard- and software are openly accessible. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-91857 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften |
| Hinterlegungsdatum: | 20 Okt 2019 19:55 |
| Letzte Änderung: | 20 Okt 2019 19:55 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Technical note: A microcontroller-based automatic rain sampler for stable isotope studies. (deposited 20 Okt 2019 19:55) [Gegenwärtig angezeigt]
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