Assessment of the bioavailability and phytotoxicity of sediment spiked with polycyclic aromatic hydrocarbons.
Large amounts of sediment are dredged globally every year. This sediment is often contaminated with low concentrations of metals, polycyclic aromatic hydrocarbons, pesticides and other organic pollutants. Some of this sediment is disposed of on land, creating a need for risk assessment of the sediment disposal method, to minimize the degradation of environmental quality and prevent risks to human health. Evaluating the available fractions of certain polycyclic aromatic hydrocarbons is very important, as in the presence of various organisms, they are believed to be easily subject to the processes of bioaccumulation, biosorption and transformation. In order to determine the applicability of applying these methods for the evaluation of pollutant bioavailability in sediments, the desorption kinetics from the sediment of various polycyclic aromatic hydrocarbons in the presence of Tenax and XAD4 were examined over the course of 216 h. Changes in the PAH concentrations in dredged sediments using five different seed plants during a short time of period (10 days) were also followed. Using chemical extraction techniques with Tenax and XAD4, a time of around 24 h is enough to achieve equilibrium for all four PAHs. Results showed good agreement between the seed accumulation and PAH extraction methods with both agents. If we compare the two extraction techniques, XAD4 gave better results for phenanthrene, pyrene and benzo(a)pyrene, and Tenax gave better results for chrysene.
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Srđan
S
Rončević
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia. jelena.spasojevic@dh.uns.ac.rs.
Jelena
J
Spasojević
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Snežana
S
Maletić
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Jelena Molnar
JM
Jazić
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Marijana Kragulj
MK
Isakovski
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Jasmina
J
Agbaba
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Marko
M
Grgić
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, 21000, Novi Sad, Serbia.
Božo
B
Dalmacija
D000327:Adsorption; D001682:Biological Availability; D019015:Geologic Sediments / Q000737:chemistry*; D018525:Germination / Q000187:drug effects; D010944:Plants / Q000187:drug effects*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry / Q000633:toxicity*; D011108:Polymers; D011137:Polystyrenes; D011145:Polyvinyls
D011084:Polycyclic Aromatic Hydrocarbons; D011108:Polymers; D011137:Polystyrenes; D011145:Polyvinyls; C010514:tenax; C012101:XAD-4 resin
Bioavailability; PAH; Phytotoxicity; Tenax; XAD4