Comparing representations of the environmental spatial scale of organic chemicals

Autor(en): Beyer, A
Scheringer, M
Schulze, C
Matthies, M
Stichwörter: characteristic travel distance; Environmental Sciences; Environmental Sciences & Ecology; GENERAL FORMULATION; long-range transport; PERSISTENCE; RANGE; spatial range; Toxicology
Erscheinungsdatum: 2001
Herausgeber: WILEY
Volumen: 20
Ausgabe: 4
Startseite: 922
Seitenende: 927
Long-range transport potential is one of the criteria proposed to identify chemicals as persistent organic pollutants. Here, different approaches to determine the spatial scale of an environmental area or region that can be impacted by an emitted chemical are investigated. A ranking of chemicals according to the spatial range R on a limited scale, as suggested by Scheringer, Ls equivalent to the characteristic travel distance L according to Bennett et al. on a linear, open scale. However, the methods are different with respect to the weighting of differences between the chemicals and according to their comparability with persistence. The characteristic travel distance L and the overall persistence a-re both plotted on open log-linear scales, whereas the spatial range R is represented on a limited scale. Various approaches of how to account for the mode of entry of chemicals are compared, and it is argued that relative measures are more appropriate to describe the long-range transport potential of chemicals than absolute numbers.
ISSN: 07307268
DOI: 10.1002/etc.5620200430

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