A5006498715- Environmental Toxicology and Ecotoxicology
- Toxic Organic Pollutants Impact
- Pharmaceutical and Antibiotic Environmental Impacts
- Effects and risks of endocrine disrupting chemicals
- Microplastics and Plastic Pollution
- Heavy metals in environment
- Fish Ecology and Management Studies
- Pesticide and Herbicide Environmental Studies
- Nanoparticles: synthesis and applications
- Microbial bioremediation and biosurfactants
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Isotope Analysis in Ecology
- Water Quality and Pollution Assessment
- Physiological and biochemical adaptations
- Analytical chemistry methods development
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Water Quality Monitoring and Analysis
- Fullerene Chemistry and Applications
- Environmental Chemistry and Analysis
- Graphene and Nanomaterials Applications
- Parasite Biology and Host Interactions
- Mercury impact and mitigation studies
- Aquaculture Nutrition and Growth
University of Eastern Finland
2011-2025
Finland University
2010-2025
University of Jyväskylä
2003-2024
VTT Technical Research Centre of Finland
2022
Tampere University
2014-2016
Helsinki Art Museum
2015
Joensuu Science Park
2000-2009
University of Michigan–Ann Arbor
2009
Catalytic Materials (United States)
2007-2008
Finnish Meteorological Institute
2005-2006
It is inevitable that carbon nanotubes (CNTs) will be released to and widely dispersed in environmental ecosystems, given their numerous expected applications. Determination of potential for bioaccumulation by ecological receptors thus critical. Previous research involving several different terrestrial benthic organisms has indicated CNTs spiked soils or sediments do not bioaccumulate. Conversely, we report here distinctly uptake depuration behaviors an aquatic organism, Daphnia magna, a...
Abstract The United Nations’ Sustainable Development Goals have been established to end poverty, protect the planet, and ensure prosperity for all. Delivery of will require a healthy productive environment. An understanding impacts chemicals which can negatively impact environmental health is therefore essential delivery Goals. However, current research on regulation in environment tend take simplistic view do not account complexity real world, inhibits way we manage chemicals. There an...
Abstract A simple method for analyzing masses of water suspended fullerenes (nC 60 ) in Daphnia magna by extracting to toluene and measuring ultraviolet‐vis spectrophotometry was developed. This used assess bioaccumulation depuration rates daphnia after nC exposure artificial freshwater. Accumulation rapid during the first few hours, based on accumulation modeling, 90% steady‐state concentration reached 21 h. After 24 h a 2 mg/L fullerene solution, accumulated 4.5 ± 0.7 g/kg wet weight, or...
Abstract Increasing abundance of microplastics (MP) in marine and freshwaters is currently one the greatest environmental concerns. Since plastics are fairly resistant to chemical decomposition, breakdown reutilization MP carbon complexes requires microbial activity. Currently, only a few isolates have been shown degrade MPs, direct measurements fate still lacking. We used compound-specific isotope analysis track fully labelled 13 C-polyethylene (PE) across aquatic microbial-animal...
The global demand for renewable energy is on the rise. Expansion of onshore wind in many parts world limited by societal acceptance, and also ecological impacts are a concern. Here, pragmatic methods developed integration high-dimensional spatial data offshore planning. Over 150 layers created, which either oppose or support development, represent ecological, societal, economic factors. method tested Finland, where interest developing growing. Analyses were done using prioritization...
It is generally accepted that sediment ingestion an important route in accumulation of highly hydrophobic sedi ment-bound contaminants. The significance this is, however, difficult to quantify reliably. For purpose, the relative importance pore water and ingested as sources was studied by exposing individual oligochaetes different size radiolabeled pyrene spiked lake for 28 days. Simultaneously, their behavior (egestion rate) followed. design allowed comparison bioaccumulation process...
Abstract The oligochaete Lumbriculus variegatus has been proposed for whole-sediment bioassays to assess sediment contamination. Our work examines exposure pyrene-dosed Lake Michigan at 0.4 ng g−1 and 64, 132, 206, 269 μg g−1. Both bioaccumulation survival were followed enhance development as a bioassay organism. accumulated sediment-associated pyrene rapidly achieved apparent steady state within 48 168 h. uptake clearances (ks, g sed animal h−1) ranged from 0.039 0.132 decreased with...
Here, we assessed the heteroaggregation of polystyrene (PS) and poly(vinyl chloride) (PVC) nanoplastics with SiO2 as a model natural colloids. Homoaggregation were evaluated function CaCl2 (0-100 mM) organic matter (NOM) (50 mg L-1) at designated concentration (200 μg L-1). Critical coagulation concentrations (CCC) determined in homoaggregation experiments CaCl2. The attachment efficiency (α) was calculated by quantifying number presence CaCl2, NOM, using single-particle inductively coupled...
Abstract Bioavailability of benzo[ a ]pyrene (B P) and 3,3′,4,4′‐tetrachlorobiphenyl (TCB) was studied in natural lake water containing dissolved organic matter (DOM). Lake diluted to give carbon (DOC) range 1 20 mg/L. Partition coefficients for the model compounds were assessed at different DOM concentrations over time with three methods, namely equilibrium dialysis reverse‐phase liquid‐liquid extraction. In addition, biological partition estimated from difference bioconcentration Daphnia...
Lumbriculus variegatus and Diporeia spp. were exposed to two contaminant pairs 3H-benzo[a]pyrene (BaP) 14C-2,4,5,2'4',5'-hexachlorobiphenyl (HCBP), 3H-pyrene (PY) 14C-3,4,3',4'-tetrachlorobiphenyl (TCBP) sorbed each of seven field-collected sediments varying composition. Toxicokinetic coefficients, bioaccumulation factors (BAF), biota-sediment accumulation ([BSAF], BAF normalized the organism lipid content sediment organic carbon content) determined. The desorption rates from measured with a...
Abstract A 10-d growth test and an emergence were performed with Chironomus riparius Meigen in four unpolluted lake sediments (organic carbon content 0.5–57%) using different feeding levels (Tetramin® at 0.03, 0.06, 0.12, or 0.33 mg/larva/d the 0, 0.15, 0.30 test) to study how sediment type level affect larval growth. To examine effects of density on growth, another was densities one larva per 24, 12, 4.8, 2.4 cm2 a Tetramin 0.12 mg/larva/d. Regardless type, necessary experiments started...
Abstract A series of experiments were conducted to estimate assimilation efficiencies two hydrophobic organic contaminants and the influence particle sizes on selective sediment ingester, Diporeia spp. Florissant soil was divided into particle-size fractions consisting 0 63 μm, 20 μm dosed with radiolabeled 2,2′,4,4′,5,5′-hexachlorobiphenyl (HCBP) and/or benzo[a]pyrene (BaP) which animals exposed for individual assays. At end timed exposure intervals, any fecal pellets they produced removed...
Measures of desorption are currently considered important as potential surrogates for bioaccumulation measures the bioavailability sediment-sorbed contaminants. This study determined rates four laboratory spiked compounds, benzo[a]pyrene (BaP), 2,4,5,2',4',5'-hexachlorobiphenyl (HCBP), 3,4,3',4'-tetrachlorobiphenyl (TCBP), and pyrene (PY), to evaluate effect sediment characteristics. The compounds were sorbed onto seven sediments with a broad range Desorption was measured by Tenax-TA...
Abstract The amphipod Diporeia spp. was exposed to pyrene(0.14 1.11 μmol g−1) or phenanthrene (0.08 0.62 g−1)-dosed sediments for month-long exposures. Phenanthrene only slightly toxic with 12±3% mortality at the highest sediment dose (0.62 g−1). Failure attain and maintain residue body burdens, based on a nonpolar narcosis concentration of approximately 6 g−1, accounts low mortality. toxicokinetic parameters were essentially constant among all doses consistent previous measures. Sediment...