Risk Assessment System for New Chemical Substances: Implementation of atmospheric transport of organic compounds

2.50
Hdl Handle:
http://hdl.handle.net/10029/256506
Title:
Risk Assessment System for New Chemical Substances: Implementation of atmospheric transport of organic compounds
Authors:
Toet C; de Leeuw FAAM
Other Titles:
Beoordelingssysteem Nieuwe Stoffen: Implementatie van atmosferisch transport van organische stoffen
Abstract:
Within the framework of the development of a risk assessment system for new chemical substances, estimation methods concerning exposure of man and environment through air have been investigated. The pathways through which exposure through air takes place in this risk assessment system are exposure of human beings by inhalation and exposure of soils by deposition. Previous research (Noordijk & De Leeuw, 1991) has shown that for new chemical substances the existing Operational Priority Substances (OPS) atmospheric transport model (Van Jaarsveld, 1990) is an appropriate tool for the estimation of atmospheric concentrations and deposition fluxes, if some additional parameter estimation procedures are added. This concerns the estimation of the partitioning between gas phase and aerosol, the wash-out ratio, the dry deposition velocity and the atmospheric reaction rate. This report focusses on the implementation of the reported estimation methods within the risk assessment system, using the OPS-model. For this purpose, a simple table has been constructed reflecting simulated concentrations and deposition fluxes as a function of substance characteristics. In order to obtain information on variance in the results, a sensitivity analysis has been carried out for the main parameters and some source characteristics. Ranges of uncertainty are obtained through this analysis.<br>
Publisher:
Rijksinstituut voor Volksgezondheid en Milieu RIVM
Issue Date:
31-Jan-1992
Additional Links:
http://www.rivm.nl/bibliotheek/rapporten/679102008.html
Type:
Onderzoeksrapport
Language:
en
Sponsors:
DGM/SR /Wielen AW van der
Appears in Collections:
RIVM official reports

Full metadata record

DC FieldValue Language
dc.contributor.authorToet C-
dc.contributor.authorde Leeuw FAAM-
dc.date.accessioned2013-06-13T21:26:46-
dc.date.issued1992-01-31-
dc.identifier679102008-
dc.description.abstractWithin the framework of the development of a risk assessment system for new chemical substances, estimation methods concerning exposure of man and environment through air have been investigated. The pathways through which exposure through air takes place in this risk assessment system are exposure of human beings by inhalation and exposure of soils by deposition. Previous research (Noordijk & De Leeuw, 1991) has shown that for new chemical substances the existing Operational Priority Substances (OPS) atmospheric transport model (Van Jaarsveld, 1990) is an appropriate tool for the estimation of atmospheric concentrations and deposition fluxes, if some additional parameter estimation procedures are added. This concerns the estimation of the partitioning between gas phase and aerosol, the wash-out ratio, the dry deposition velocity and the atmospheric reaction rate. This report focusses on the implementation of the reported estimation methods within the risk assessment system, using the OPS-model. For this purpose, a simple table has been constructed reflecting simulated concentrations and deposition fluxes as a function of substance characteristics. In order to obtain information on variance in the results, a sensitivity analysis has been carried out for the main parameters and some source characteristics. Ranges of uncertainty are obtained through this analysis.<br>en
dc.description.sponsorshipDGM/SR /Wielen AW van der-
dc.format.extent27 p-
dc.language.isoen-
dc.publisherRijksinstituut voor Volksgezondheid en Milieu RIVM-
dc.relation.ispartofRIVM Rapport 679102008-
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/679102008.html-
dc.subject15nl
dc.subject92-1nl
dc.subjectblootstellings schattingnl
dc.subjectnieuwe chemische stoffennl
dc.subjectatmosferisch transportnl
dc.subjectdepositienl
dc.subjectexposure assessmentnl
dc.subjectnew chemical substancesnl
dc.subjectatmospheric transportnl
dc.subjectdepositionnl
dc.titleRisk Assessment System for New Chemical Substances: Implementation of atmospheric transport of organic compoundsen
dc.title.alternativeBeoordelingssysteem Nieuwe Stoffen: Implementatie van atmosferisch transport van organische stoffennl
dc.typeOnderzoeksrapport-
dc.date.updated2013-06-13T19:26:48Z-
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