A5073611389- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Water Treatment and Disinfection
- Heavy Metal Exposure and Toxicity
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organometallic Complex Synthesis and Catalysis
- Organoboron and organosilicon chemistry
- Per- and polyfluoroalkyl substances research
- Environmental Chemistry and Analysis
- Air Quality and Health Impacts
- Toxic Organic Pollutants Impact
- Trace Elements in Health
- Nanoparticles: synthesis and applications
- Crystal structures of chemical compounds
- Conservation Techniques and Studies
- Hydrogen's biological and therapeutic effects
- Chemical Analysis and Environmental Impact
- Organic Electronics and Photovoltaics
- Magnetism in coordination complexes
- Integrated Water Resources Management
- Microplastics and Plastic Pollution
- Silicone and Siloxane Chemistry
- Atmospheric chemistry and aerosols
- Environmental Science and Water Management
German Environment Agency
2021-2025
Environment Agency Austria
2024
University of Tübingen
2023
Deutsches Institut für Normung
2023
Bayerisches Landesamt für Umwelt
2023
Karlsruhe University of Education
2023
Helmholtz Centre for Environmental Research
2023
TU Bergakademie Freiberg
2009-2015
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2015
Australian National University
2010
Metals reach humans through food and drinking water intake inhalation of airborne particles can have detrimental health effects in particular for children. The metals presented here (lead, cadmium, chromium, mercury) could lead to toxic such as neurotoxicity, mutagenicity, been classified (possible) carcinogens. Using population representative data from the German Environmental Survey 2014-2017 (GerES V) 3- 17-year-old children on cadmium blood (n = 720) mercury urine 2250) we describe...
The occurrence of per- and polyfluoroalkyl substances (PFAS) in water cycles poses a challenge to drinking quality safety. In order counteract the large knowledge gap regarding PFAS German water, 89 samples from all over Germany were collected with help residents analyzed for 26 by high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS). 20 recently regulated sum concentration (PFAS
Due to their beneficial properties, the use of zinc oxide nanoparticles (ZnO NP) is constantly increasing, especially in consumer-related areas, such as food packaging and additives, which leading an increased oral uptake ZnO NP. Consequently, aim our study was investigate cellular two differently sized NP (<50 nm <100 nm; 12–1229 µmol/L) using human intestinal cell lines (Caco-2 LT97) examine possible resulting toxic effects. nm) were internalized by both led intracellular changes....
Pool water is continuously circulated and reused after an extensive treatment including disinfection by chlorination, ozonation or UV treatment. In Germany, these methods are regulated DIN standard 19643. Recently, the has been extended a new method using hypobromous acid as disinfectant formed introducing ozone into with naturally artificially high bromide content during this study, we tested efficacy of ozone-bromine in comparison to hypochlorous flow-through test rig bacterial indicator...
The reactions of [RuCl2(═CHPh)(PCy3)2] or [RuHCl(η-H2)(PCy3)2] with the N-heterocyclic silylene :Si(NtBuCH)2 (ISitBu) affords coordinatively unsaturated complex [RuHCl(ISitBu)(PCy3)2]. For comparative purposes, corresponding [RuHCl(IiPr)(PCy3)2] (IiPr = :C(NiPrCH)2) was obtained from and IiPr.
Abstract Tridentate salphen‐type O,N,N′ chelators, upon acylation of the NH 2 group, are capable engaging an O,N,O′ coordination mode in addition to their inherent donor character. In six‐coordinate silicon complexes type SiL [L = N ‐(2‐ c arbamidophenyl)imine], these ligands were found exclusively form SiN O 4 spheres by tridentate capability. Selected L also shown preferably engage when incorporated five‐ and four‐coordinate compounds LSiPhX (X Cl, F) LSiPh , respectively. The modes herein...
In industrialized nations, human lead exposure has decreased significantly in recent decades. Nevertheless, due to its toxic effects, this heavy metal remains a public health concern with children and adolescents being particularly at risk. Europe nowadays, oral intake via food drinking water is the predominant pathway for lead. The objective of present study was investigate association between dietary factors blood (PbB) level 3- 17-year-old living Germany, using data from fifth German...
Abstract Background Zinc oxide nanoparticles (ZnO NP) offer beneficial properties for many applications, especially in the food sector. Consequently, as part of human chain, they are taken up orally. The toxicological evaluation orally ingested ZnO NP is still controversial. In addition, their physicochemical can change during digestion, which leads to an altered biological behaviour. Therefore, aim our study was investigate fate two different sized (< 50 nm and < 100 nm) vitro...
Kryptopyrrole (2,4-dimethyl-3-ethylpyrrole) was acylated with, for example, benzoyl chloride to afford 2-benzoyl-3,5-dimethyl-4-ethylpyrrole (L(1)H). With SiCl4 this ligand reacts under liberation of HCl and formation the complex L(1)2SiCl2. In related reactions with HSiCl3 or H2SiCl2, same chlorosilicon is formed H2 H2, respectively. The chlorine atoms L(1)2SiCl2 can be replaced by fluoride triflate using ZnF2 Me3Si-OTf, use a supporting base (triethylamine) required complexation...
The first examples of silicon compounds 1,1-bis(pyrrol-2-yl)ethenes have been synthesized via salt metathesis from a 2-fold lithiated dipyrromethene and different diorganodichlorosilanes (i.e., dimethyldichlorosilane, diphenyldichlorosilane, 1,1-dichlorosilacyclobutane). Herein we report on their molecular structures, optical properties, some reactivity patterns.
Abstract The transsilylation reaction between allyltrichlorosilane and 8-trimethylsiloxyquinoline in the molar ratio 1 : 3 yields hexacoordinated silicon tris-chelate (oxinate) 2 Si(adho) (“oxinate” = 8- oxyquinolinate, “adho” di-anion of 2-allyl-1,2-dihydro-8-oxyquinoline) comprising an SiO N skeleton. identity this complex was established by single-crystal X-ray diffraction analysis 29 Si CP=MAS NMR spectroscopy its chloroform solvate. Benzyltrichlorosilane dibenzyldichlorosilane, benzyl...
Zinc oxide nanoparticles (ZnO NP) are often used in the food sector, among others, because of their advantageous properties. As part human chain, they inevitably taken up orally. The debate on toxicity orally ingested ZnO NP continues due to incomplete data. Therefore, aim our study was examine effects two differently sized (<50 nm and <100 primary particle size; 123-614 µmol/L) model systems intestinal barrier. Differentiated Caco-2 enterocytes were grown Transwell inserts monoculture also...
Hexacoordinate silicon complexes L2SiX2 (L = a 2-benzoylpyrrol-1-yl derivative, X CN, NCS) were synthesized from L2SiCl2 by ligand exchange with trimethylsilyl reagents Me3SiX. In the presence of [Tp*CuNCMe] and Me3SiCN complex L2Si(NC(CuTp*))2 was obtained, which contains linear Cu-CN-Si-NC-Cu unit (Tp* hydrotris(3,5-dimethylpyrazolyl)borato).
Abstract The l -valinates M (Val) 2 of = Ni ( 1 ), Cu ) and Zn 3 are easily obtained as crystalline hydrates. Their structural reinvestigation resulted in a general enhancement precision for · H O O, case the copper complex correction previously reported space group zinc determination structure new hydrate O.
Zusammenfassung Die Jahrestagung der Wasserchemischen Gesellschaft „Wasser 2024“ vom 6. bis 8. Mai in Limburg präsentierte sich als die zentrale deutsche Tagung über neuesten Erkenntnisse zu allen Themen Wasserqualität. Profis aus dem Bereich Wasserchemie, Wasseraufbereitung sowie Fachleute anderer Disziplinen des Wasserfachs trafen einem intensiven Erfahrungs‐ und Gedankenaustausch. Ein Schwerpunkt lag auf persönlichen Begegnung den wissenschaftlichen Diskussionen aktueller fachlicher...
Nach Infektionsschutzgesetz (IfSG) § 38 Absatz 2 sollen die Anforderungen an Qualität von Wasser zum Schwimmen und Baden in öffentlichen Bädern durch eine Rechtsverordnung mit Zustimmung des Bundesrates reguliert werden. In dieser sind ebenso Verpflichtungen der Badbetreiber, Aufbereitungsstoffe -verfahren ihre Listung beim Umweltbundesamt sowie Überwachung zuständige Behörde zu regeln, ganz Analogie zur Trinkwasserhygiene, welche nach IfSG 1 Trinkwasserverordnung adressiert wird. Trotz...
Einrichtungen des Badewesen sind Orte zum Wohlfühlen und Entspannen, zur Bewegung, sportlichen Aktivität vielem mehr, das einen positiven Beitrag Gesundheit allgemeinen Befinden leistet. Damit dies so ist selbstverständlich in Anspruch genommen werden kann, bedarf es einiger Voraussetzungen. Dazu zählen vor allem Maßnahmen, die verhindern, dass Wasser Bädern als Infektionsweg dient, auf dem Krankheitserreger von einem Badegast andere übertragen werden.