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Semipermeable membrane devices in monitoring of organic pollutants in the aquatic environment

Sabaliunas, Darius LU (1999)
Abstract
Semipermeable membrane devices (SPMDs) are passive samplers capable of concentrating hydrophobic chemicals from water, sediments, soil and air. They consist of layflat polymeric membrane such as polyethylene containing a thin film of synthetic lipid such as triolein. The transport of hydrophobic chemicals through the membrane into the lipid is governed by the process of passive diffusion. Therefore, SPMDs sample chemicals in a way similar to organisms.



This thesis deals with the application of SPMDs in the monitoring of concentrations and effects of organic pollutants in the aquatic environment. SPMDs were exposed to various pesticides (organochlorines, synthetic pyrethroids, dinitroanilines, amides) in laboratory... (More)
Semipermeable membrane devices (SPMDs) are passive samplers capable of concentrating hydrophobic chemicals from water, sediments, soil and air. They consist of layflat polymeric membrane such as polyethylene containing a thin film of synthetic lipid such as triolein. The transport of hydrophobic chemicals through the membrane into the lipid is governed by the process of passive diffusion. Therefore, SPMDs sample chemicals in a way similar to organisms.



This thesis deals with the application of SPMDs in the monitoring of concentrations and effects of organic pollutants in the aquatic environment. SPMDs were exposed to various pesticides (organochlorines, synthetic pyrethroids, dinitroanilines, amides) in laboratory flow-through experiments to study the uptake kinetics of organic chemicals from water. To compare the uptake of model compounds by SPMDs and aquatic organisms, the membrane samplers were exposed to chemicals side-by-side with bivalves. Mixtures of chemicals accumulated by SPMDs and mussels were tested in standard toxicity and genotoxicity assays (Microtox, Mutatox, invertebrate toxicity tests, the Ames test, sister chromatid exchange test). These studies showed that the uptake pattern of organic compounds by SPMDs and aquatic organisms was similar, and the passive samplers accumulated levels of chemicals sufficient for standard bioassays.



To further validate the method, SPMDs were deployed in a number of polluted water sources in Lithuania. Bioassay-directed fractionation and chemical analytical methods were used to identify pollutants sampled (PAHs, PCBs, organochlorines) and their effects were evaluated in bioassays. SPMDs proved to be useful tools in monitoring of organic pollutants under the field conditions. Criteria for bioassays to be integrated with the SPMD technique were defined based on the results of these studies. Some important factors in the integration of SPMDs and bioassays (toxicity of SPMD-inherent oleic and sediment-associated inorganic sulfur) were considered. (Less)
Please use this url to cite or link to this publication:
author
opponent
  • Dr McCarthy, John F., Environmental Sciences Division, Oak Rigde National Laboratory, U.S.A.
organization
publishing date
type
Thesis
publication status
published
subject
keywords
effect studies, environmental monitoring, organic pollutants, bioconcentration, passive samplers, Semipermeable membrane devices, SPMDs, toxicity, genotoxicity, bioassays, Ecology, Ekologi
pages
134 pages
publisher
Department of Ecology, Lund University
defense location
Blue Hall of the Deparment of Ecology, Solvegatan 37, Lund
defense date
1999-04-28 10:00
external identifiers
  • Other:ISRN: SE-LUNBDS/NBKE-99/1014+134pp
ISBN
91-7105-108-2
language
English
LU publication?
yes
id
deeb6b8e-73f4-41b7-8f44-9b4e16332011 (old id 39430)
date added to LUP
2007-07-31 16:38:49
date last changed
2016-09-19 08:45:13
@misc{deeb6b8e-73f4-41b7-8f44-9b4e16332011,
  abstract     = {Semipermeable membrane devices (SPMDs) are passive samplers capable of concentrating hydrophobic chemicals from water, sediments, soil and air. They consist of layflat polymeric membrane such as polyethylene containing a thin film of synthetic lipid such as triolein. The transport of hydrophobic chemicals through the membrane into the lipid is governed by the process of passive diffusion. Therefore, SPMDs sample chemicals in a way similar to organisms.<br/><br>
<br/><br>
This thesis deals with the application of SPMDs in the monitoring of concentrations and effects of organic pollutants in the aquatic environment. SPMDs were exposed to various pesticides (organochlorines, synthetic pyrethroids, dinitroanilines, amides) in laboratory flow-through experiments to study the uptake kinetics of organic chemicals from water. To compare the uptake of model compounds by SPMDs and aquatic organisms, the membrane samplers were exposed to chemicals side-by-side with bivalves. Mixtures of chemicals accumulated by SPMDs and mussels were tested in standard toxicity and genotoxicity assays (Microtox, Mutatox, invertebrate toxicity tests, the Ames test, sister chromatid exchange test). These studies showed that the uptake pattern of organic compounds by SPMDs and aquatic organisms was similar, and the passive samplers accumulated levels of chemicals sufficient for standard bioassays.<br/><br>
<br/><br>
To further validate the method, SPMDs were deployed in a number of polluted water sources in Lithuania. Bioassay-directed fractionation and chemical analytical methods were used to identify pollutants sampled (PAHs, PCBs, organochlorines) and their effects were evaluated in bioassays. SPMDs proved to be useful tools in monitoring of organic pollutants under the field conditions. Criteria for bioassays to be integrated with the SPMD technique were defined based on the results of these studies. Some important factors in the integration of SPMDs and bioassays (toxicity of SPMD-inherent oleic and sediment-associated inorganic sulfur) were considered.},
  author       = {Sabaliunas, Darius},
  isbn         = {91-7105-108-2},
  keyword      = {effect studies,environmental monitoring,organic pollutants,bioconcentration,passive samplers,Semipermeable membrane devices,SPMDs,toxicity,genotoxicity,bioassays,Ecology,Ekologi},
  language     = {eng},
  pages        = {134},
  publisher    = {ARRAY(0xa03ed10)},
  title        = {Semipermeable membrane devices in monitoring of organic pollutants in the aquatic environment},
  year         = {1999},
}