A novel method for the in situ calibration of flow effects on a phosphate passive sampler

Journal of Environmental Monitoring : JEM
Dominique Sara O'BrienJochen Mueller

Abstract

Monitoring of nutrients including phosphate in the aquatic environment remains a challenge. In the last decade passive sampling techniques have been developed that facilitates the time integrated monitoring of phosphate (P) through the use of an iron hydroxide (ferrihydrite) to sequester dissolved phosphate from solution. These methods rely on established techniques to negate the effects of flow (and associated turbulence) and control the rate at which chemicals accumulate within passive samplers. In this study we present a phosphate sampler within which a suspension of ferrihydrite is contained behind a commercially available membrane. Accumulation of dissolved phosphates into the P-sampler is governed by the rate at which ions are diffusing through the membrane and the water boundary layer (WBL). As the WBL changes subject to flow we have adopted an in situ calibration technique based on the dissolution of gypsum to predict the change in the rate of uptake dependent on flow. Here we demonstrate that the loss of gypsum from the passive flow monitor (PFM) can be used to predict the sampling rate (the volume of water extracted per day) for phosphate as a function of water velocity. The outcome of this study presents a new in-fie...Continue Reading

References

Dec 14, 2005·Environmental Pollution·Branislav VranaRichard Greenwood
Oct 3, 2006·Marine Pollution Bulletin·Paul TettStephen Malcolm
Jan 11, 2007·Journal of Environmental Monitoring : JEM·Beat MüllerRené Gächter
Apr 24, 2007·Journal of Chromatography. a·Gangfeng Ouyang, Janusz Pawliszyn
Aug 28, 2007·Journal of Chromatography. a·Suresh SeethapathyXiaojing Li

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Citations

Feb 2, 2013·Environmental Science and Pollution Research International·Catherine BerhoLaurence Amalric
Apr 11, 2012·Environmental Science & Technology·Sarit L KaserzonJochen F Mueller
Apr 19, 2015·The Science of the Total Environment·Polina OrlinskiyMatthias Liess
Oct 13, 2009·Aquatic Toxicology·Melanie ShawJochen F Mueller
Sep 8, 2009·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Cornelia Katharina Mueller, Stefan Schultze-Mosgau
Jan 27, 2009·Clinical Gastroenterology and Hepatology : the Official Clinical Practice Journal of the American Gastroenterological Association·Alan N Barkun
Sep 27, 2012·Environmental Toxicology and Chemistry·Christopher HarmanEtiënne L M Vermeirssen
Dec 26, 2013·Environmental Pollution·Sarit L KaserzonJochen F Mueller
Mar 13, 2012·Marine Pollution Bulletin·Dominique O'BrienJochen F Mueller
Apr 25, 2018·Environmental Toxicology and Chemistry·Kees Booij, Sunmao Chen
Jan 15, 2013·Journal of the American Heart Association·Xiaoxiang YanMotoaki Sano
Mar 22, 2020·Environmental Science and Pollution Research International·Catherine BerhoAuguste Bruchet
Jan 29, 2011·Journal of Environmental Monitoring : JEM·Haipu BiBeate Escher
Apr 1, 2019·Environmental Science and Pollution Research International·Jakub Urík, Branislav Vrana
Mar 5, 2011·Environmental Science & Technology·Dominique S O'BrienJochen F Mueller

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