Publications by authors named "Nils Keltsch"
Bacterial biofilm formation is a huge problem in industry and medicine. Therefore, the discovery of anti-biofilm agents may hold great promise. Biofilm formation is usually a consequence of bacterial cell-cell communication, a process called quorum sensing (QS).
View Article and Find Full Text PDFOrganic coatings can guarantee long-term protection of steel structures due to causing a physical barrier against water and oxygen. Because of their mechanical properties and resistances to heat and chemicals, epoxy resin-based coatings are widely used for corrosion protection. Despite of the aromatic backbone and the resulting susceptibility to UV degradation, epoxy resins are frequently used as binding agent in top layers of anti-corrosion coating systems.
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- PFASs have been rarely studied in the Lake Victoria Basin and Uganda, prompting an investigation into their presence in various water sources including open lake, rivers, urban drainage, and municipal tap water.
- The study found varying average concentrations of PFASs, with the highest levels detected in the Nakivubo Channel, and established that atmospheric deposition was the main contributor to overall PFAS influx into Lake Victoria.
- While PFHxA and PFOS were noted for their significant presence, the overall estimated human exposure to PFAS through drinking water indicated a low risk of adverse health effects.
Article Synopsis
- Per- and polyfluoroalkyl substances (PFASs) are commonly found in the environment but have been poorly studied in edible plants, particularly focusing on perfluoroalkyl acids (PFAAs).
- A new analytical method was developed to quantify 16 intermediate PFAS transformation products and 18 PFAAs in various plants using advanced extraction and chromatography techniques.
- The analysis revealed the presence of certain transformation products, notably N-ethyl perfluorooctane sulfonamidoacetic acid (EtFOSAA) and perfluorooctane sulfonamide (FOSA), in high concentrations in maize leaves, indicating widespread contamination in crops from polluted agricultural fields.