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Consortium of Swiss Academic Libraries

(NH4)2SO4 recovery from liquid side streams

Boehler, Marc ; Heisele, Alexander ; Seyfried, Alexander ; Grömping, Markus ; Siegrist, Hansruedi

In: Environmental Science and Pollution Research, 2015, vol. 22, no. 10, p. 7295-7305

Université de Fribourg

Measurement of ultra-trace level of intact oxytocin in plasma using SALLE combined with nano-LC–MS

Liu, Dan ; Han, Xiaoli ; Liu, Xinxin ; Cheng, Mengchun ; He, Meixi ; Rainer, Gregor ; Gao, Huiyuan ; Zhang, Xiaozhe

In: Journal of Pharmaceutical and Biomedical Analysis, 2019, vol. 173, p. 62–67

Measurement of peptides such as oxytocin in plasma is a critical challenge in clinical research because of their extreme low concentrations as well as the tremendous interferencing substances co-presented in plasma. In this study, we developed an efficient salt-out assisted liquid-liquid extraction (SALLE) to treat plasma, and then analyzed the samples using nano-LC–MS to quantify intact...

Université de Fribourg

High-resolution monitoring of water temperature and oxygen concentration in Lake Murten (Switzerland)

Kateb, Akram El ; Rüggeberg, Andres ; Stalder, Claudio ; Neururer, Christoph ; Spezzaferri, Silvia

In: Swiss Journal of Geosciences, 2018, vol. 111, no. 3, p. 501–510

Lake Murten is located in the Lake District in western Switzerland and so far, it has been poorly investigated. The Environmental Service of Fribourg (SEn) has monitored this lake once a month for several years by water profiles (water temperature, pH, dissolved oxygen, conductivity) at its deepest part. The SEn identified the stratification of water masses as one of the main causes for...