Projects / Programmes
Analizna kemija okolja in bioloških sistemov (Slovene)
January 1, 1999
- December 31, 2003
| Code |
Science |
Field |
Subfield |
| 1.08.00 |
Natural sciences and mathematics |
Control and care of the environment |
|
| 1.04.00 |
Natural sciences and mathematics |
Chemistry |
|
| Code |
Science |
Field |
| P305 |
Natural sciences and mathematics |
Environmental chemistry |
| P300 |
Natural sciences and mathematics |
Analytical chemistry |
| B260 |
Biomedical sciences |
Hydrobiology, marine biology, aquatic ecology, limnology |
| B270 |
Biomedical sciences |
Plant ecology |
| B560 |
Biomedical sciences |
Urology, nephrology |
| P400 |
Natural sciences and mathematics |
Physical chemistry |
Researchers (11)
Organisations (1)
| no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
| 1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
90,682 |
Abstract
In the investigations of cycling, transformations, biological availability and activity, as well as the toxicity of microelements in the environment, it is necessary to determine the total element concentration and also chemical forms of elements. For this purpose the reliable analytical procedures will be developed for the determination of total concentrations of Al, Cu, Zn, Fe and Rb in bone samples, serum and plasma and fresh and spent CAPD fluids. The parameters will be optimised for sample digestion and determination of elements by optical spectrometry methods. Special attention will be paid to assure the quality of analysis (standard reference materials, intercomparison analysis with other analytical techniques). The procedures will be also developed for speciation of Zn, Cu and Rb in samples of spent CAPD fluids. On the basis of the results the mechanisms of depletion or accumulation of these elements in dialysis patients will be predicted. In the field of metal speciation chemical species of elements will be separated by microultrafiltration, gel and ion exchange chromatography. The procedures will be developed for determination of chemical species of Al in serum samples. The knowledge about chemical species in serum will help in understanding the mechanisms and transport of this toxic metal in renal and Alzheimer's patients. Al species in plant sap will be investigated as well. With the analytical techniques developed the uptake, kinetics and transformation of various Al species in plants will be investigated to find out which are the most toxic Al species to plants. The influence of Zn, Cd and Pb in the environment as a consequence of the industrial activities will be investigated by applying sequential extraction procedures of soil samples from contaminated area from the Mežica valley. In the water-soluble fraction the speciation of elements will be performed. On the basis of the results the uptake of some chemical species of Zn, Cd and Pb in plants will be investigated.
In the field of organic analytical chemistry we will study forms and distribution of persistent organic chemicals (POPs), their biodegradability and bioaccumulation. For environmental pollution control we will investigate selected biota (leachens, mussels) as bioindicator. We will continue with in vitro biodegradation investigation of saturated aliphatic and 4- and 5-rings polyaromatic hydrocarbons from petroleum products carried out in aqueous media by various bacterial cultures. On the basis of the identified metabolites the biodegradation pathways will be proposed. The ecotoxicity of the biodegradation products will be also tested. The status in the Slovene marine ecosystem of toxic organic compounds originate from antifouling paints (organotins, triazine, herbicides) and petrochemicals (PAH) will be established. For gas chromatographic/mass spectrometric analysis of POPs in various natural matrices specific analytical procedures will be developed and validated by standard reference materials and results compared with the intercomparison tests.
Knudsen Cell Mass Spectrometry (KCMS) was used in order to study the evaporation and/or atomisation properties of inorganic substances. Thermochemical data obtained by the method are of extreme importance for computation of chemical equilibrium during incineration processes of waste material. This makes possible to evaluate the relative concentration of pollutant species and their emission into the environment during such process.
Most important scientific results
Final report
Most important socioeconomically and culturally relevant results
Final report
