A5028391043- Analytical chemistry methods development
- Heavy metals in environment
- Lichen and fungal ecology
- Electrochemical Analysis and Applications
- Mercury impact and mitigation studies
- Radioactive element chemistry and processing
- Botany and Plant Ecology Studies
- Water Quality Monitoring and Analysis
- Mass Spectrometry Techniques and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Coal and Its By-products
- Pesticide Residue Analysis and Safety
- Climate change and permafrost
- Plant Stress Responses and Tolerance
- Cryospheric studies and observations
- Extraction and Separation Processes
- Plant responses to elevated CO2
- Toxic Organic Pollutants Impact
- Analytical Chemistry and Chromatography
- Spectroscopy and Chemometric Analyses
- Heavy Metals in Plants
- Adsorption and biosorption for pollutant removal
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Atmospheric chemistry and aerosols
University of Oulu
2014-2023
We present a high‐resolution record of water‐soluble ion chemistry from 121 m ice core spanning about 800 years. The is well dated to 2/3 depth using cycle counting and reference horizons simple but close fitting model for the lower 1/3 core. This suffers modest seasonal melt, so we concentration data in decadal running means minimize percolation effects. Sea‐salt ions (Na + , Cl − Mg 2+ K ) account more than 70% all ions. In general, sea‐salt concentrations are rather variable have no clear...
Wet processing after crushing is common practice in mineral circuits involving flotation but the need for more efficient water management has increased interest towards dry processing. In this study effects of both wet and grinding on one sulphidic non-sulphidic ore were compared. Bench scale tests carried out various microscopic spectroscopic methods such as FESEM XPS used characterization feeds products. Bulk surface charge properties tested with mass titration. Clear differences results...
AbstractA five-stage, sequential leaching procedure was used to determine the distribution of metals (Cd, Cu, Pb, Cr, Zn, Ni, Co, As, V, Ba, Ti and K) in fly ash from a pulp paper mill complex between water-soluble fraction (H2O), exchangeable (CH3COOH), easily reduced (HONH3Cl), oxidizable (H2O2.CH3COONH4), residual (HF+HNO3+HCl). The possible environmental risk associated with eco-efficient utilization as fertilizer, especially Cd load, estimated. In addition, mobility (i.e....
Moss samples ( Pleurozium schreberi ) exposed to traffic‐related emission of Pd, Pt and Rh were analysed in this study. Successful elimination interferences was achieved the determination mass fractions these using inductively coupled plasma‐tandem spectrometry ICP ‐ MS / ). Based on results, a reliable microwave‐digested moss obtained ammonia (10% NH 3 He) collision/reaction cell when 103 measured either on‐mass (103→103) or with mass‐shift (103→171) mass‐shifts for 108 Pd (108→159) 195...
Snow pits sampled during two consecutive years (2001, 2002) at the summit of Lomonosovfonna ice cap in central Spitsbergen, Svalbard, showed that ion concentrations were spatially homogeneous. The snowpack on shows no evidence aerosol deposition from Arctic haze, contrast to Holtedahlfonna (a glacier a similar altitude northern Spitsbergen) where there is clear signature. In common with many other caps Arctic, experiences periodic melting, and deepest snow contained record one exceptionally...