Publications by authors named "Kristoffer Kilpinen"
Effluent wastewater from conventional wastewater treatment plants (WWTPs) is a source of environmental micropollutants. This study investigated temporal trends of organic micropollutants in effluent wastewater, aiming to identify underlying drivers and their implications for treatment efficiency. From September to December 2022, we collected 168 effluent and 10 influent samples.
View Article and Find Full Text PDFQuantitative nontarget analysis (qNTA) for liquid chromatography coupled to high-resolution mass spectrometry enables a more comprehensive assessment of environmental samples. Previous studies have shown that correlations between a compound's ionization efficiency and a range of molecular descriptors can predict the compound's concentration within a factor of 5. In this study, the qNTA approach was further improved by considering all mass adducts instead of only the protonated ion.
View Article and Find Full Text PDFCatchment area, fate, and environmental risks investigation of micropollutants in Danish wastewater.
Environ Sci Pollut Res Int
December 2023
Article Synopsis
- The study looked at how tiny pollution particles (micropollutants) are found in wastewater from different areas in Denmark and how they affect the environment.
- Researchers took samples from eight wastewater treatment plants (WWTPs) and found 79 micropollutants out of 291 they were looking for.
- They discovered that while most micropollutants got less concentrated during treatment, some like certain medications actually increased, showing that the area where the wastewater comes from matters a lot.
Article Synopsis
- The study focuses on the health impacts of Polycyclic Aromatic Hydrocarbons (PAHs) in urban environments and uses the moss species Rhytidiadelphus squarrosus to monitor airborne PAH pollution in Tórshavn, Faroe Islands.
- A total of 53 moss samples were analyzed for 19 parent PAHs, revealing significant concentration variations, with higher amounts located near the harbor and main roads; the total PAHs measured ranged from 0.90 to 344 µg per kg of dry weight.
- Findings indicate that different pollution sources uniquely affect urban areas, and this research is the first to utilize Rhytidiadelphus squarrosus for mapping PAH pollution
In this study, micropollutants in wastewater effluents were prioritized by monitoring the composition of influent and effluent wastewater by liquid chromatography - high-resolution mass spectrometry (LCHRMS) non-target screening (NTS) analysis. The study shows how important data pre-processing and filtering of raw data is to produce reliable NTS data for comparison of compounds between many samples (37 wastewater samples) analyzed at different times. Triplicate injections were critical for reducing the number of false-positive detections.
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