Application of multimedia models for screening assessment of long-range transport potential and overall persistence.
We propose a multimedia model-based methodology to evaluate whether a chemical substance qualifies as POP-like based on overall persistence (Pov) 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 Pov and LRTP is not always consistent with the single-media half-life approach proposed by the UNEP Stockholm Convention and thatthe 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.
Klasmeier
Jörg
J
Institute of Environmental Systems Research, University of Osnabrück, D-49069 Osnabrück, Germany.
Matthies
Michael
M
Macleod
Matthew
M
Fenner
Kathrin
K
Scheringer
Martin
M
Stroebe
Maximilian
M
Le Gall
Anne Christine
AC
Mckone
Thomas
T
Van De Meent
Dik
D
Wania
Frank
F
D000392:Air Movements; D001673:Biodegradation, Environmental; D001692:Biological Transport; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis*; D015386:Hazardous Substances / Q000032:analysis*; D008403:Mass Screening; D008954:Models, Biological; D009930:Organic Chemicals / Q000032:analysis*; D018570:Risk Assessment; D013997:Time Factors; D014872:Water Movements
D004785:Environmental Pollutants; D015386:Hazardous Substances; D009930:Organic Chemicals