A5034512263- Pharmaceutical and Antibiotic Environmental Impacts
- Mass Spectrometry Techniques and Applications
- Metabolomics and Mass Spectrometry Studies
- Photovoltaic System Optimization Techniques
- Analytical chemistry methods development
- Adsorption and Cooling Systems
- Analytical Chemistry and Chromatography
- Solar Thermal and Photovoltaic Systems
- Energy and Environment Impacts
- Building Energy and Comfort Optimization
- Biosensors and Analytical Detection
- Advanced Chemical Sensor Technologies
- Solar-Powered Water Purification Methods
- Microfluidic and Capillary Electrophoresis Applications
- Water Treatment and Disinfection
- Solar Radiation and Photovoltaics
- Environmental Science and Water Management
- Microbial Community Ecology and Physiology
- Environmental DNA in Biodiversity Studies
- Building materials and conservation
- Heat Transfer and Optimization
- Low-power high-performance VLSI design
- Advanced oxidation water treatment
- Silicon and Solar Cell Technologies
- Water Systems and Optimization
University of California, Los Angeles
2025
Landeswasserversorgung (Germany)
2016-2024
Deggendorf Institute of Technology
2021
Leuphana University of Lüneburg
2016-2017
Technische Hochschule Ingolstadt
2014
Nontargeted screening (NTS) utilizing liquid chromatography electrospray ionization high-resolution mass spectrometry (LC/ESI/HRMS) is increasingly used to identify environmental contaminants. Major differences in the efficiency of compounds ESI/HRMS result widely varying responses and complicate quantitative analysis. Despite an increasing number methods for quantification without authentic standards NTS, approaches are evaluated on limited diverse data sets with chemical coverage collected...
The behavior of micropollutants in water treatment is an important aspect terms quality. Nontarget screening by liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS) offers the opportunity comprehensively assess processes comparing signal heights all detectable compounds before and after treatment. Without preselection known target compounds, accessible information used describe changes across thus serves as a measure for efficiency. In this study, we introduce novel...
Chlorothalonil, a fungicide applied for decades worldwide, has recently been banned in the European Union (EU) and Switzerland due to its carcinogenicity presence of potentially toxic transformation products (TPs) groundwater. The spread concentration range chlorothalonil TPs different drinking water resources was examined (73 groundwater four surface samples mainly from Switzerland). sulfonic acid (R471811, R419492, R417888) occurred more frequently at higher concentrations (detected...
Members of the California Air Resources Board (CARB) participated in odor profile method (OPM) training program. The OPM is flavor analysis (FPA) standard applied to air samples. FPA a widely used drinking water taste and evaluations. It was found that pre-screening potential trainees for anosmia cases necessary. After characteristics were defined by references standardized terminology, able accurately describe single odors. However, could not always simultaneously perceive all odors within...
Abstract Reversed-phase liquid chromatography (RPLC) used for water analysis is not ideal the of highly polar and ionic contaminants because low retention. Capillary electrophoresis (CE), on other hand, perfectly suited separation compounds but rarely applied in environmental due to weak concentration sensitivity when coupled mass spectrometry (MS). However, novel interface designs MS technology strongly improve sensitivity. Here, a method presented enabling screening anionic micropollutants...
Global concerns and growth in electricity demand, especially for rural remote settlements, has forced governments, scientists, engineers, researchers to look alternative solutions the form of renewable energy sources. High global solar technology applications added more weight operations maintenance (O&M) solar-photovoltaic (SPV) systems. SPV reliability optimized system performance are key ensuring success continual adaptation technology. O&M plays a central role...
The climate specific effectiveness of solar DEC-systems and relevant preferable adaptions the system design have been so far predominantly analysed based on individual simulation for selected sites. In order to systematically deduce design-specific outline data application DEC-technology at climatically different sites a methodological zoning approach was further developed. A subsequent meteorological analysis 17 mapping world creates transparent understanding activity components. This...
For the analysis of low concentrations micropollutants in environmental water samples, efficient sample enrichment and cleanup are necessary to reduce matrix effects reach detection limits. analytes medium polarity, solid-phase extraction is used, but robust methods for preconcentration highly polar or ionizable scarce. In this work, field-step electrophoresis (FSE) was developed as an technique ionic transformation products. The FSE electrolyte system preconcentrated 15 acidic model (pKa...
Most of the worldwide energy supply for air-conditioningprocesses is based on non-renewable sources, astoday commonly used technology air-conditioningis electrically driven compression type refrigeration.
This contribution deals with the working principle ofthermosyphon systems in brief, describes results of aworldwide market analysis on thermosyphon solar waterheaters, gives a insight into modelling and simulation concludes by presentingsimulation for Gaborone (Botswana) comparedwith three European locations.
Eine Überwachung von Roh- und Trinkwasser ist für eine sichere Trinkwasserversorgung essentiell. Neben gezielter Target-Analytik werden vermehrt Non-Target-Screening-Ansätze genutzt, um auch unbekannte oder unerwartete Spurenstoffe zu erfassen. Beide Analysenmethoden wurden etabliert, die Donau sowie deren Zuflüsse im Großraum Ulm untersuchen. Die höchsten Mediankonzentrationen hochpolare Stoffe festgestellt. Diese sind besonders in den Fokus rücken, da sie aufgrund ihrer Persistenz...