Application of multimedia models for screening assessment of long-range transport potential and overall persistence
Autor(en): | Klasmeier, J Matthies, M Macleod, M Fenner, K Scheringer, M Stroebe, M Le Gall, AC Mckone, T Van De Meent, D Wania, F |
Stichwörter: | Engineering; Engineering, Environmental; Environmental Sciences; Environmental Sciences & Ecology; FATE; ORGANIC-CHEMICALS; REMOTE STATE; SPATIAL RANGE | Erscheinungsdatum: | 2006 | Herausgeber: | AMER CHEMICAL SOC | Journal: | ENVIRONMENTAL SCIENCE & TECHNOLOGY | Volumen: | 40 | Ausgabe: | 1 | Startseite: | 53 | Seitenende: | 60 | Zusammenfassung: | We propose a multimedia model-based methodology to evaluate whether a chemical substance qualifies as POP-like based on overall persistence (Pot,) and potential for long-range transport (LRTP). It relies upon screening chemicals against the Pov and LRTP characteristics of selected reference chemicals with well-established environmental fates. Results indicate that chemicals of high and low concern in terms of persistence and long-range transport can be consistently identified by eight contemporary multimedia models using the proposed methodology. Model results for three hypothetical chemicals illustrate that the model-based classification of chemicals according to P,), and LRTP is not always consistent with the single-media half-life approach proposed by the UNEP Stockholm Convention and that the models provide additional insight into the likely long-term hazards associated with chemicals in the environment. We suggest this model-based classification method be adopted as a complement to screening against defined half-life criteria at the initial stages of tiered assessments designed to identify POP-like chemicals and to prioritize further environmental fate studies for new and existing chemicals. |
ISSN: | 0013936X | DOI: | 10.1021/es0512024 |
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