Naslov (eng)

Methods using passive sampling techniques in sediment

Autor

Stupavski, Maja
Vojinović-Miloradov, Mirjana
Turk-Sekulić, Maja
Radonić, Jelena
Kiurski-Milošević, Jelena
Kovačević, Srđan
Čepić, Zoran
Okuka, Marija

Publisher

Opis (srp)

Sampling is the most important step of any analytical procedure. Errors committed at this stage cannot be corrected later during the analysis. There is a different specific methods, which depend on the nature of the analyte and their concentration levels. Solutions for this situation are methods of passive sampling and extraction of analytes, which involve measurement of the concentration of any analyte as a weighted average over the sampling and/or extraction time. The concentration of the analyte is integrated over the whole exposure time, making such a method immune to accidental, extreme variations of pollutant concentrations. Information obtained in this way is a suitable means of obtaining a long-term overview ofpollutant levels in a environmental compartments. Techniques like Solid Phase Micro Extraction (SPME), Low Density Polyethylene- (LDPE), Silicon rubber- (PDMS) and POM- Solid Phase Extraction are applied to determine the pore water concentrations. TENAX extractions are used to estimate the available fraction, and In-vitro Passive Sampling (IVPS) gives an estimate of both pore water and available concentrations. Consequently, the partition coefficients of the compounds of interest for the available fraction in the sediment the are determined as well. The availability concept and how the different methods contribute to obtaining information on availability for uptake are discussed.

Jezik

engleski

Datum

2012

Licenca

© All rights reserved

Predmet

passive sampling, sediment, SPME, TENAX, POM, PDMS, LDPE, IVPS