Výsledky vyhledávání - "Ruth Stierli"

Balancing nutrient inputs to Lake Kivu

Autor: Mwapu Isumbisho, Jean Nepomuscene Namugize, Fred Bugenyi, Alfred Wüest, Fabrice A. Muvundja, Päivi Johanna Rinta, Martin Schmid, Natacha Pasche, Beat Müller, Ruth Stierli

Publikováno v: Journal of Great Lakes Research. 35:406-418

The primary production in meromictic Lake Kivu is sustained by external nutrient inputs and by internal loading due to upwelling caused by sub-aquatic sources. We present here the results of external loading of phosphorus (P), nitrogen (N) and silica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83e12fde3182a23de4790e23c70b3534
https://doi.org/10.1016/j.jglr.2009.06.002

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A low cost method to estimate dissolved reactive phosphorus loads of rivers and streams

Autor: René Gächter, Ruth Stierli, A. Stöckli, Beat Müller, Ernst Butscher

Publikováno v: J. Environ. Monit.. 9:82-86

Concentration of dissolved reactive phosphorus ([DRP]) in rivers changes periodically (daily, weekly, seasonally) and is dependent on the weather and discharge Q. Accordingly, accurate estimation of the annual DRP load requires intensive sampling if

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f2bec0e43137172e454b3667664fbfc
https://doi.org/10.1039/b613153k

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In situ determination of sulfide profiles in sediment porewaters with a miniaturized Ag/Ag2S electrode

Autor: Ruth Stierli, Beat Müller

Publikováno v: Analytica Chimica Acta. 401:257-264

The use of silver containing epoxy resin allows the manufacturing of sulfide electrodes in arbitrary geometry and size. Electroplating with Ag provides a mirror-like surface essential for optimal performance. Miniature sensors were constructed using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68415efa033a51f27833fa03e8c0a819
https://doi.org/10.1016/s0003-2670(99)00490-0

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High spatial resolution measurements in lake sediments with PVC based liquid membrane ion-selective electrodes

Autor: Kerst Buis, Bernhard Wehrli, Beat Müller, Ruth Stierli

Publikováno v: Scopus-Elsevier

Ion-selective liquid membrane electrodes for Ca 2+ , CO 2- 3 , NH + 4 , NO - 3 , NO - 2 , and pH have been miniaturized and their characteristics evaluated in view of their application in sediment pore water of lakes. PVC membranes were prepared in p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d10b0855ae2975dd4de52da951bc8ef6
https://doi.org/10.4319/lo.1998.43.7.1728

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Quinone and iron porphyrin mediated reduction of nitroaromatic compounds in homogeneous aqueous solution

Autor: Josef Zeyer, Klaus Lanz, Ruth. Stierli, Rene P. Schwarzenbach

Publikováno v: Environmental Science & Technology. 24:1566-1574

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81aef3918d71144ff3f7a55f0531c663
https://doi.org/10.1021/es00080a017

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Phosphate adsorption by mineral weathering particles in oligotrophic waters of high particle content

Autor: Beat Müller, Ruth Stierli, Alfred Wüest

Publikováno v: Water Resources Research. 42

We investigated the interactions of dissolved reactive phosphorus (DRP) and dissolved nonreactive phosphorus (DNRP) with suspended and settled aquatic particles. The sorption to minerogenic particles from an alpine catchment collected in rivers, hydr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::785327622be82f4f68e9ebc95201cbf1
https://doi.org/10.1029/2005wr004778

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