Evaluation of the OECD P OV and LRTP screening tool for estimating the long-range transport of organophosphate esters

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Roxana Sühring
  • Martin Scheringer
  • Timothy F.M. Rodgers
  • Liisa M. Jantunen
  • Miriam L. Diamond

Scientists and decision makers need accurate, accessible and fast tools to assess and prioritize the persistence (POV) and environmental long-range transport potential (LRTP) of chemicals. Here we evaluated the Organisation for Economic Co-operation and Development (OECD) POV and LRTP Screening Tool ("the Tool") with respect to the POV and LRTP estimates that the Tool provides for organophosphate esters (OPEs). We found that the use of default parameter values could significantly underestimate POV and LRTP values of OPEs and, potentially, other Persistent Mobile Organic Compounds (PMOCs), by not accounting for episodic atmospheric transport and poleward river-based transport in the northern hemisphere. Specifically, sensitivity and Monte Carlo uncertainty analyses indicate that non-chlorinated OPEs could be subject to LRTP when uncertainties in gas-particle partitioning and its implications for atmospheric degradation are considered, and chlorinated OPEs when river-based transport is considered. Further, the analyses showed strong dependence of results on the accuracy of the environmental half-lives used as input parameters. We suggest that the Tool could be modified to include an optional "Arctic (PMOC) LRTP setting" that incorporates episodic atmospheric and river-based transport as well as decreased environmental half-lives due to cold temperatures.

OriginalspracheEnglisch
ZeitschriftEnvironmental Sciences: Processes & Impacts
Jahrgang22
Ausgabenummer1
Seiten (von - bis)207-216
Anzahl der Seiten10
ISSN2050-7887
DOIs
PublikationsstatusErschienen - 01.01.2020

DOI

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