Search Results - "Walter Giger"

Occurrence and Sorption Behavior of Sulfonamides, Macrolides, and Trimethoprim in Activated Sludge Treatment by Göbel, Anke, Thomsen, Angela, McArdell, Christa S, Joss, Adriano, Giger, Walter

“…The occurrence of sulfonamide and macrolide antimicrobials, as well as trimethoprim, was investigated in conventional activated sludge treatment. Average daily…”
Get full text

Occurrence and Mass Flows of Fluorochemicals in the Glatt Valley Watershed, Switzerland by Huset, Carin A, Chiaia, Aurea C, Barofsky, Douglas F, Jonkers, Niels, Kohler, Hans-Peter E, Ort, Christoph, Giger, Walter, Field, Jennifer A

“…Fluorochemicals are persistent contaminants that are globally distributed in air, water, sediments, and biota. Wastewater treatment plants (WWTPs) play an…”
Get full text

Hydrological and sedimentary controls leading to arsenic contamination of groundwater in the Hanoi area, Vietnam: The impact of iron-arsenic ratios, peat, river bank deposits, and excessive groundwater abstraction by Berg, Michael, Trang, Pham Thi Kim, Stengel, Caroline, Buschmann, Johanna, Viet, Pham Hung, Van Dan, Nguyen, Giger, Walter, Stüben, Doris

“…Groundwater contamination by arsenic in Vietnam poses a serious health threat to millions of people. In the larger Hanoi area, elevated arsenic levels are…”
Get full text

Occurrence, fate and antibiotic resistance of fluoroquinolone antibacterials in hospital wastewaters in Hanoi, Vietnam by Duong, Hong Anh, Pham, Ngoc Ha, Nguyen, Hoang Tung, Hoang, Thi Thuong, Pham, Hung Viet, Pham, Van Ca, Berg, Michael, Giger, Walter, Alder, Alfredo C.

“…Occurrence and behavior of fluoroquinolone antibacterial agents (FQs) were investigated in hospital wastewaters in Hanoi, Vietnam. Hospital wastewater in Hanoi…”
Get full text

Arsenic Removal from Groundwater by Household Sand Filters:  Comparative Field Study, Model Calculations, and Health Benefits by Berg, Michael, Luzi, Samuel, Trang, Pham Thi Kim, Viet, Pham Hung, Giger, Walter, Stüben, Doris

“…Arsenic removal efficiencies of 43 household sand filters were studied in rural areas of the Red River Delta in Vietnam. Simultaneously, raw groundwater from…”
Get full text

Organophosphate flame retardants and plasticizers in indoor air by Hartmann, Paul C., Bürgi, Daniel, Giger, Walter

“…Analytical methods were developed for a broad range of organophosphate flame retardants and plasticizers in indoor air. Screening was performed of various…”
Get full text

Occurrence and Fate of Macrolide Antibiotics in Wastewater Treatment Plants and in the Glatt Valley Watershed, Switzerland by McArdell, Christa S, Molnar, Eva, Suter, Marc J.-F, Giger, Walter

“…An analytical method was developed for determining macrolide antibiotics in treated wastewater effluents and in ambient water based on solid-phase extraction…”
Get full text

Arsenic Contamination of Groundwater and Drinking Water in Vietnam:  A Human Health Threat by Berg, Michael, Tran, Hong Con, Nguyen, Thi Chuyen, Pham, Hung Viet, Schertenleib, Roland, Giger, Walter

“…This is the first publication on arsenic contamination of the Red River alluvial tract in the city of Hanoi and in the surrounding rural districts. Due to…”
Get full text

Anaerobic degradation of brominated flame retardants in sewage sludge by Gerecke, Andreas C., Giger, Walter, Hartmann, Paul C., Heeb, Norbert V., Kohler, Hans-Peter E., Schmid, Peter, Zennegg, Markus, Kohler, Martin

“…Tetrabromobisphenol A (TBBPA), hexabromocyclododecane (HBCD), and decabromodiphenyl ether (DecaBDE) are high production volume chemicals used as flame…”
Get full text

1992–2017: 25 Years of the Swiss Chemical Society's Division of Analytical Sciences – Past, Present and Future Activities by Walter Giger, Fritz Erni, Ernst Halder

Get full text

Anaerobic Degradation of Decabromodiphenyl Ether by Gerecke, Andreas C, Hartmann, Paul C, Heeb, Norbert V, Kohler, Hans-Peter E, Giger, Walter, Schmid, Peter, Zennegg, Markus, Kohler, Martin

“…The environmental safety of decabromodiphenyl ether (BDE-209), a widely used flame retardant, has been the topic of controversial discussions during the past…”
Get full text

Determination of Fluoroquinolone Antibacterial Agents in Sewage Sludge and Sludge-Treated Soil Using Accelerated Solvent Extraction Followed by Solid-Phase Extraction by Golet, Eva M, Strehler, Adrian, Alder, Alfredo C, Giger, Walter

“…A method for the quantitative determination of human-use fluoroquinolone antibacterial agents (FQs) ciprofloxacin and norfloxacin in sewage sludge and…”
Get full text

Extraction and determination of sulfonamides, macrolides, and trimethoprim in sewage sludge by Göbel, Anke, Thomsen, Angela, McArdell, Christa S., Alder, Alfredo C., Giger, Walter, Theiß, Nicole, Löffler, Dirk, Ternes, Thomas A.

“…Pressurized liquid extraction (PLE) was optimized and validated for the determination of sulfonamide and macrolide antimicrobials and trimethoprim in sewage…”
Get full text

Isomer-Specific Degradation and Endocrine Disrupting Activity of Nonylphenols by Gabriel, Frédéric L. P, Routledge, Edwin J, Heidlberger, Andy, Rentsch, Daniel, Guenther, Klaus, Giger, Walter, Sumpter, John P, Kohler, Hans-Peter E

“…Degradation of technical nonylphenol by Sphingobium xenophagum Bayram led to a significant shift in the isomers composition of the mixture. By means of gas…”
Get full text

Temporal Trends, Congener Patterns, and Sources of Octa-, Nona-, and Decabromodiphenyl Ethers (PBDE) and Hexabromocyclododecanes (HBCD) in Swiss Lake Sediments by Kohler, Martin, Zennegg, Markus, Bogdal, Christian, Gerecke, Andreas C, Schmid, Peter, V. Heeb, Norbert, Sturm, Michael, Vonmont, Heinz, E. Kohler, Hans-Peter, Giger, Walter

“…With the recent ban of pentabromodiphenyl ether (technical PentaBDE) and octabromodiphenyl ether (technical OctaBDE) mixtures in the European Union (EU) and in…”
Get full text

Isomer-Specific Determination of 4-Nonylphenols Using Comprehensive Two-Dimensional Gas Chromatography/Time-of-Flight Mass Spectrometry by Eganhouse, Robert P, Pontolillo, James, Gaines, Richard B, Frysinger, Glenn S, Gabriel, Frédéric L. P, Kohler, Hans-Peter E, Giger, Walter, Barber, Larry B

“…Technical nonylphenol (tNP), used for industrial production of nonylphenol polyethoxylate surfactants, is a complex mixture of C3−10-phenols. The major…”
Get full text

International Conference on Contaminated Sediments - ContaSed 2015 8-13 March 2015, Monte Verità, Ascona, Switzerland by Chiaia-Hernandez, Aurea C, Giger, Walter

“…About 80 participants from 22 countries from industry and academia gathered at the International Conference on Contaminated Sediments (ContaSed 2015) held at…”
Get full text

Environmental fate of phenolic endocrine disruptors: field and laboratory studies by Giger, Walter, Gabriel, Frédéric L. P., Jonkers, Niels, Wettstein, Felix E., Kohler, Hans-Peter E.

“…-substitution mechanism, and to use only the aromatic part of the molecule. These reactions turned out to be isomer specific, meaning that rate and extent of…”
Get full text

Occurrence and Fate of Antibiotics as Trace Contaminants in Wastewaters, Sewage Sludges, and Surface Waters by Walter Giger, Alfredo C. Alder, Eva M. Golet, Hans-Peter E. Kohler, Christa S. McArdell, Eva Molnar, Hansrudolf Siegrist, Marc J.-F. Suter

“…Environmental analytical studies show that trace concentrations of antibacterial agents (antibiotics) occur in hospital and municipal wastewaters and in the…”
Get full text

Combined biological and chemical assessment of estrogenic activities in wastewater treatment plant effluents by Aerni, Hans-Rudolf, Kobler, Bernd, Rutishauser, Barbara V, Wettstein, Felix E, Fischer, René, Giger, Walter, Hungerbühler, Andreas, Marazuela, M Dolores, Peter, Armin, Schönenberger, René, Vögeli, A Christiane, Suter, Marc J-F, Eggen, Rik I L

“…Five wastewater treatment plant effluents were analyzed for known endocrine disrupters and estrogenicity. Estrogenicity was determined by using the yeast…”
Get full text