Helene Walch

ORCID: 0000-0003-0293-9620
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About
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Research Areas
  • Nanoparticles: synthesis and applications
  • Pesticide and Herbicide Environmental Studies
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Wastewater Treatment and Nitrogen Removal
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Coastal wetland ecosystem dynamics
  • Pesticide Residue Analysis and Safety
  • Advanced Theoretical and Applied Studies in Material Sciences and Geometry
  • Quantum Dots Synthesis And Properties
  • Mine drainage and remediation techniques
  • Electrochemical Analysis and Applications
  • Geochemistry and Elemental Analysis
  • Microplastics and Plastic Pollution
  • Electrostatics and Colloid Interactions
  • Phosphorus and nutrient management
  • Urban Stormwater Management Solutions
  • Fecal contamination and water quality
  • Insect and Pesticide Research
  • Pesticide Exposure and Toxicity
  • Coagulation and Flocculation Studies

Environment Agency Austria
2022-2024

University of Vienna
2018-2023

Centre for Science and Environment
2020

A lot of research efforts are currently dedicated to the development nano-enabled agrochemicals. It is thus urgent develop suitable strategies for their ecological assessment.

10.1039/c8en00038g article EN cc-by Environmental Science Nano 2018-01-01

Aquatic fate models and risk assessment require experimental information on the potential of contaminants to interact with riverine suspended particulate matter (SPM). While for dissolved partition or sorption coefficients are used, underlying assumption chemical equilibrium is invalid contaminants, such as engineered nanomaterials, incidental nanoparticles, micro- nanoplastics. Their interactions SPM governed by physicochemical forces between contaminant-particle surfaces. The availability...

10.1016/j.watres.2022.119385 article EN cc-by Water Research 2022-11-19

The assessment of nanoparticle NP transformation in the aquatic environment is essential for comprehending fate nanoparticles and conducting accurate risk assessments. Nanoparticles encompass a variety materials, including manufactured nanomaterials, nanoplastics, natural colloids. Environmental comprises four main routes: dissolution/leaching, abiotic transformation/degradation, biotic transformation/degradation (hetero-)agglomeration. kinetics heteroagglomeration play pivotal role (NP)...

10.5194/egusphere-egu24-8778 preprint EN 2024-03-08

Aquatic fate models and risk assessment require experimental information on the potential of contaminants to interact with riverine suspended particulate matter (SPM). While for dissolved partition or sorption coefficients are used, underlying assumption chemical equilibrium is invalid contaminants, such as engineered nanomaterials, incidental nanoparticles, micro- nanoplastics. Their interactions SPM governed by physicochemical forces between contaminant-particle surfaces. The availability...

10.31223/x5zw7q preprint EN cc-by EarthArXiv (California Digital Library) 2022-08-31

Test system to determine nanomaterial heteroagglomeration attachment efficiency for fate models and risk assessment.

10.1039/d3en00161j article EN cc-by-nc Environmental Science Nano 2023-06-28

Freshwater suspended particulate matter (SPM) plays an important role in many biogeochemical cycles and serves multiple ecosystem functions. Most SPM is present as complex floc-like aggregate structures composed of various minerals organic from the molecular to organism level. Flocs provide habitat for microbes feed larger organisms. They constitute microbial bioreactors, with prominent roles carbon inorganic nutrient cycles, transport nutrients well pollutants, affecting sediments,...

10.31223/x5864g preprint EN cc-by EarthArXiv (California Digital Library) 2022-02-18
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