A5028895649- Heavy metals in environment
- Research in Social Sciences
- Soil and Water Nutrient Dynamics
- Toxic Organic Pollutants Impact
- Microbial bioremediation and biosurfactants
- Soil Carbon and Nitrogen Dynamics
- Marine and coastal ecosystems
- Effects and risks of endocrine disrupting chemicals
- Environmental Chemistry and Analysis
- Microbial Community Ecology and Physiology
- Phosphorus and nutrient management
- Bioeconomy and Sustainability Development
- Mine drainage and remediation techniques
- Aquatic Ecosystems and Phytoplankton Dynamics
- Per- and polyfluoroalkyl substances research
- Analytical chemistry methods development
- Geology and Paleoclimatology Research
- Anaerobic Digestion and Biogas Production
- Environmental Toxicology and Ecotoxicology
- Wastewater Treatment and Nitrogen Removal
- Chromium effects and bioremediation
- graph theory and CDMA systems
- Renewable energy and sustainable power systems
- Municipal Solid Waste Management
- Botany and Plant Ecology Studies
Finnish Food Authority
2011-2021
Icelandic Transport Authority
2018
Danish Agriculture and Food Council
2018
Swedish Radiation Safety Authority
2018
National Food Administration
2018
Technical University of Denmark
2018
École de management de Lyon
2011
Finnish Environment Institute
2001-2005
Biocenter Finland
1998-2000
University of Helsinki
1997-1999
Summary The aim was to characterize dissolved organic matter in soils under different tree species. Molecular size distribution and chemical composition of carbon nitrogen were determined water extracts from humus layers mineral taken silver birch ( Betula pendula Roth.), Norway spruce Picea abies (L.) Karst.) Scots pine Pinus sylvestris L.) stands. Concentrations tannins 15 phenolic acids the measured. Per unit matter, concentrations C N larger than layer. In underlying soil, similar at all...
Rate of sediment accumulation extractable organic halogen (EOX) and 12 trace elements (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sn, V, Zn) were analyzed retrospectively over 100 years in the recipient area pulp mills Lake Saimaa two nonrecipient forest lakes southeastern Finland. The sediments dated by 210Pb 137Cs activities. From 1880s to 1940s, <1 mg EOX−Cl accumulated m-2 year-1 Saimaa, but increased 1350 from 1950s 1980s at 3 km 500 5 discharge point bleaching mills. Abandoning elemental...
Sediments were dated and the quality assessed by polyphasic approach in an area of Lake Saimaa, which has received waste water from bleached kraft pulp production since 1954. The chosen nonrecipient forest Pyylampi was situated same area. activities enzymes butyrate-esterase aminopeptidase depressed at depth 2 to 8 cm recipient but not forst lake sediment. In layers contents EOX-C1 toxicity Vibrio fischeri very high compared those above or below. Toxicity microbial community layer also...
Abstract We assessed the biological status of age—dated sediments in Lake Saimaa, a recipient lake for wastewaters from pulp and paper industry more than 100 years that has also received kraft bleaching wastewater since 1954. Adenosine triphosphate content dropped sediment top 1 cm (deposited 1990s) to 4 6 below surface 1980s) by factor 1,000 but increased again deeper, older layers (23 cm). The dominant species diatom community, Aulacoseira alpigena Cyclotella kützingiana , disappeared were...
In order to create a basis for prognosing future intrinsic remediation potential of past pollution by pulping industry, we analyzed biochemical activities and levels in sediments dated with 210 Pb 137 Cs. A small pristine forest lake pulp mill recipient area large oligotrophic Lake Saimaa were test sites. Sediment concentration EOX ranged from 40 130 μg Cl (g d.w.) −1 the 770 4700 C:Cl (w/w) ratio sediment organic matter 2000 5100 42 230, respectively. The 10 20 years old was mainly waste...
A comparative study of seven different methods for analysing chlorinated phenolics in sediment was made. It included extraction phenols with organic solvents and phenolate anions alkaline water solutions. The most efficient extract strong alkali, 6 M KOH, mixed methanol. To describe the performance method accuracy, precision (reproducibility repeatability) limit detection were determined. Other aspects (contact time, degradation, quality) concerning also examined. contact time 48 h needed...
In order to create a basis for prognosing future intrinsic remediation potential of past pollution by pulping industry, we analyzed biochemical activities and levels in sediments dated with 210Pb 137Cs. A small pristine forest lake pulp mill recipient area large oligotrophic Lake Saimaa were test sites. Sediment concentration EOX ranged from 40 130 μg Cl (g d.w.)−1 the 770 4700 C:Cl (w/w) ratio sediment organic matter 2000 5100 42 230, respectively. The 10 20 years old was mainly waste water...
Sediments were dated and the quality assessed by polyphasic approach in an area of Lake Saimaa, which has received waste water from bleached kraft pulp production since 1954. The chosen nonrecipient forest Pyylampi was situated same area. activities enzymes butyrate-esterase aminopeptidase depressed at depth 2 to 8 cm recipient but not forst lake sediment. In layers contents EOX-C1 toxicity Vibrio fischeri very high compared those above or below. Toxicity microbial community layer also...