A5070233528- Per- and polyfluoroalkyl substances research
- Toxic Organic Pollutants Impact
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Microplastics and Plastic Pollution
- Effects and risks of endocrine disrupting chemicals
- Pharmaceutical and Antibiotic Environmental Impacts
- Marine animal studies overview
- Ocean Acidification Effects and Responses
- Metabolomics and Mass Spectrometry Studies
- Advanced Chemical Sensor Technologies
- Mass Spectrometry Techniques and Applications
- Chemical Analysis and Environmental Impact
- Fluoride Effects and Removal
- Fluorine in Organic Chemistry
- Health, Environment, Cognitive Aging
- Water Treatment and Disinfection
- Analytical Chemistry and Chromatography
- Recycling and Waste Management Techniques
- Pesticide Residue Analysis and Safety
- Smart Materials for Construction
- Mercury impact and mitigation studies
- Analytical chemistry methods development
- bioluminescence and chemiluminescence research
- Winter Sports Injuries and Performance
Stockholm University
2015-2024
Stockholm Environment Institute
2020
Helmholtz Centre for Environmental Research
2015
University of Toronto
2010
L3S Research Center
2009
Each year vast amounts of plastic are produced worldwide. When released to the environment, plastics accumulate, and debris in world's oceans is particular environmental concern. More than 60% all floating increasing each year. Plastic polymers marine environment exposed sunlight, oxidants physical stress, over time they weather degrade. The degradation processes products must be understood detect evaluate potential hazards. Some attention has been drawn additives persistent organic...
Buoyant plastic in the marine environment is exposed to sunlight, oxidants, and physical stress, which may lead degradation of polymer release compounds that are potentially hazardous. We report development a laboratory protocol simulates exposure floating ultraviolet light (UV) nontarget analysis identify products polymers water. Plastic pellets [polyethylene, polypropylene, polystyrene, poly(ethylene terephthalate)] suspended water were UV source for 5 days. Organic chemicals concentrated...
The emission of per- and polyfluoroalkyl substances (PFAS) from functional textiles was investigated via an outdoor weathering experiment in Sydney, Australia. Polyamide (PA) textile fabrics treated with different water-repellent, side-chain fluorinated polymers (SFPs) were exposed on a rooftop to multiple natural stressors, including direct sunlight, precipitation, wind, heat for 6-months. After weathering, additional stress applied the through abrasion washing. Textile characterization...
Standard ecotoxicological testing of microplastic does not provide insight into the influence that environmental weathering by, e.g., UV light has on related effects. In this study, we leached chemicals from plastic artificial seawater during simulated UV-induced weathering. We tested largely additive-free preproduction polyethylene, polyethylene terephthalate, polypropylene, and polystyrene two types obtained electronic equipment as positive controls. Leachates were concentrated by...
A combined method for quantitative analysis, along with suspect and non-target screening of per- polyfluoroalkyl substances (PFAS) was developed using ultra-high pressure liquid chromatography-ultra-high resolution (Orbitrap) mass spectrometry. The applied together measurements total- extractable organofluorine (TF EOF, respectively), to pooled serum samples from 1996-2017 first-time mothers living in the county Uppsala, Sweden, some which (i.e. 148 472 women sampled 1996-2012) were exposed...
Untargeted analysis of a composite house dust sample has been performed as part collaborative effort to evaluate the progress in field suspect and nontarget screening build an extensive database organic indoor environment contaminants. Twenty-one participants reported results that were curated by organizers trial. In total, nearly 2350 compounds identified (18%) or tentatively (25% at confidence level 2 58% 3), making trial success. However, relatively small share (37%) all more than one...
There is increasing evidence that the ∼20 routinely monitored perfluoroalkyl and polyfluoroalkyl substances (PFASs) account for only a fraction of extractable organofluorine (EOF) occurring in environment. To assess whether PFAS exposure being underestimated marine mammals from Northern Hemisphere, we performed fluorine mass balance on liver tissues 11 different species using combination targeted analysis, EOF total determination, suspect screening. Samples were obtained east coast United...
The quantity and composition of fibers released from functional textiles during accelerated washing were investigated using the GyroWash method. Two fabrics [polyamide (PA) polyester/cotton (PES/CO)] selected coated with perfluorohexane-based side-chain fluorinated polymers. Fibers ranged ∼10 to 500 μ a similar distribution for two textile types. PA-based fabric considerably more >20 μm in length compared PES/CO-based (>1000/GyroWash PA vs ∼200/GyroWash PES/CO). After one (2-15 domestic...
and polyfluoroalkyl substances (PFAS) may affect adolescent health, yet factors related to PFAS concentrations in serum are poorly understood. We studied demographic, life-style physiological determinants of Swedish adolescents from a nation-wide survey, Riksmaten Adolescents 2016–17 (RMA, age 10–21 years, n = 1098). Serum samples were analyzed for 42 PFAS, using liquid chromatography-tandem mass spectrometry. The cumulative probability model was used estimate associations between...
Fluorine mass balance studies have shown that monomeric per- and polyfluoroalkyl substances (PFAS) with perfluoroalkyl chain lengths of ∼5–14 carbon atoms (i.e., "conventional" PFAS) account for a fraction (∼2%) the extractable organic fluorine (EOF) in municipal wastewater treatment plant (WWTP) sludge. The identity remaining EOF has thus far been unclear but may be partly attributable to fluorine-containing pharmaceuticals pesticides used throughout society. To test this hypothesis, we...
High-resolution mass spectrometry (HRMS)-based suspect and nontarget screening has identified a growing number of novel per- polyfluoroalkyl substances (PFASs) in the environment. However, without analytical standards, fraction overall PFAS exposure accounted for by these suspects remains ambiguous. Fortunately, recent developments ionization efficiency (IE) prediction using machine learning offer possibility to quantify lacking standards. In present work, gradient boosted tree-based model...
In this study, emission of per- and polyfluoroalkyl substances (PFAS) from the use cosmetics in European Economic Area (EEA; not including Lichtenstein Iceland) was estimated for first time. Using Commission database information on cosmetic ingredients (CosIng) ∼170 structures containing at least -CF2- or -CF3 were identified as market. These then cross referenced against Cosmetic Database "CosmEthics" to identify PFAS-containing products. Among these products, polytetrafluoroethylene (PTFE)...
The unique properties of per- and polyfluoroalkyl substances (PFAS) have led to their extensive use in consumer products, including ski wax. Based on the risks associated with PFAS, align PFAS regulations, international federation (FIS) implemented a ban products containing "C
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 high proportion of unidentified extractable organofluorine (EOF) observed globally in humans and the environment indicates widespread occurrence unknown per- polyfluoroalkyl substances (PFAS). However, efforts to standardize or assess reproducibility EOF methods are currently lacking. Here we present first interlaboratory comparison water sludge. Three participants (four organizations) analyzed unfortified PFAS-fortified ultrapure water, two groundwater samples, wastewater treatment...
Given their extensive production volumes and potential to form persistent perfluoroalkyl acids (PFAAs), there is concern surrounding the ongoing use of side-chain fluorinated polymers (SFPs) in consumer products. Targeted SFP quantification relies on matrix-assisted laser desorption ionization time-of-flight mass spectrometry, which can suffer from poor accuracy high detection limits. Alternatively, total fluorine (TF)-based methods may be used, but these approaches report concentrations a...
Per- and polyfluoroalkyl substances (PFAS) are frequently used in the production of rubber plastic, but little is known about identity, concentration, or prevalence PFAS these products. In this study, a representative sample plastic- rubber-containing artificial turf (AT) fields from Stockholm, Sweden, was subjected to total fluorine (TF), extractable organic (EOF), target analysis. TF observed all 51 AT samples (ranges 16-313, 12-310, 24-661 μg F/g backing, filling, blades, respectively),...
Soil organic matter bound to soil minerals contribute long-term carbon and nutrient sequestration by protecting from rapid microbial decomposition. However, the binding between can be weakened plant root exudates enhancing potential for additional CO2 emissions. Root contain low molecular weight acids that might promote release stimulating decomposition of (priming) or directly weathering minerals. The vulnerability mineral-associated is particularly significant at higher latitudes where...
Human biomonitoring (HBM) programs monitor exposure to a limited number of prioritized chemicals resulting in some important substances being overlooked. Nontarget analysis shows promise for capturing novel substances, yet the large quantity data produced by these methods remains challenging interrogate. Here, we apply prioritization strategy temporal nontarget HBM data, which shortlists features with increasing time trends, possibly representing are bioaccumulating or humans increasingly...
It is generally accepted that per- and polyfluoroalkyl substances (PFASs) occur primarily in protein-rich tissues such as blood liver, but few studies have examined the occurrence of legacy novel PFASs lipid-rich blubber. Here we report distribution 24 PFASs, total fluorine, extractable organic fluorine (EOF) eight different a killer whale (Orcinus orca) from East Greenland. The sum target PFAS concentrations was highest liver (352 ng/g wet weight) decreased following order: > kidney ≈ lung...