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Technical note: GUARD - An automated fluid sampler preventing sample alteration by contamination, evaporation and gas exchange, suitable for remote areas and harsh conditions

Hartmann, Arno; Luetscher, Marc; Wachter, Ralf; Holz, Philipp; Eiche, Elisabeth; Neumann, Thomas

Abstract (englisch):
Automated water sampling devices adapted to field operation have proven highly useful for environmental research as well as in the public and private sector, where natural or artificial waters need to be tested regularly for compliance with environmental and health regulations. Such autosamplers are already available on the market in slightly differing versions, but none of these devices are capable of sealing the collected samples to prevent sample alteration by contamination, evaporation or gas exchange. In many sampling cases, however, this feature is essential, for instance for studying the hydrological cycle based on isotopes in rainwater, or for monitoring waters contaminated with toxic gases or other volatile compounds detrimental to biota and human health. Therefore, we have developed a new mobile autosampler, which injects water samples directly into airtight vials, thus preventing any sample alteration. Further advantages include low production costs, compact dimensions and low weight allowing for easy transport, a wide range of selectable sampling intervals as well as a low power consumption, which make it suitable for long-term applications even in remote areas and harsh (outdoor) conditions due to its heavy-duty water-proof casing. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000085056
Veröffentlicht am 09.11.2018
DOI: 10.5194/hess-2017-697
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1812-2116
KITopen-ID: 1000085056
Erschienen in Hydrology and earth system sciences discussions
Band 22
Seiten 4281-4293
Projektinformation Client Vietnam - KaWaTech (BMBF, BMBF FONA, 02WCL1291A)
Vorab online veröffentlicht am 09.01.2018
Schlagwörter automated fluid sampling, environmental monitoring, speleothem science
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