globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-2637-2019
论文题名:
Technical note: A microcontroller-based automatic rain sampler for stable isotope studies
作者: Michelsen N.; Laube G.; Friesen J.; Weise S.M.; Bakhit Ali Bait Said A.; Müller T.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:6
起始页码: 2637
结束页码: 2645
语种: 英语
Scopus关键词: Evaporation ; Microcontrollers ; Rain ; Water quality ; Analytical precision ; Diurnal temperatures ; Evaporative loss ; Field deployment ; Isotope fractionation ; Microcontroller-based ; Scientific literature ; Water quality analysis ; Isotopes ; instrumentation ; isotopic analysis ; isotopic fractionation ; laboratory method ; sampler ; software ; stable isotope ; temperature effect ; water quality
英文摘要: Automatic samplers represent a convenient way to gather rain samples for isotope (δ18O and δ2H) 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. © 2019 Copernicus GmbH. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162954
Appears in Collections:气候变化与战略

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作者单位: Michelsen, N., Institute of Applied Geosciences, Technische Universität Darmstadt, Darmstadt, 64287, Germany; Laube, G., Department of Hydrogeology, UFZ Helmholtz Centre for Environmental Research, Leipzig, 04318, Germany; Friesen, J., Department of Catchment Hydrology, UFZ Helmholtz Centre for Environmental Research, Halle, 06120, Germany; Weise, S.M., Department of Catchment Hydrology, UFZ Helmholtz Centre for Environmental Research, Halle, 06120, Germany; Bakhit Ali Bait Said, A., Ministry of Regional Municipalities and Water Resources, Salalah, Oman; Müller, T., Department of Hydrogeology, UFZ Helmholtz Centre for Environmental Research, Leipzig, 04318, Germany

Recommended Citation:
Michelsen N.,Laube G.,Friesen J.,et al. Technical note: A microcontroller-based automatic rain sampler for stable isotope studies[J]. Hydrology and Earth System Sciences,2019-01-01,23(6)
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