Publication details
Evaluation of the OECD P-OV and LRTP screening tool for estimating the long-range transport of organophosphate esters
| Authors | |
|---|---|
| Year of publication | 2020 |
| Type | Article in Periodical |
| Magazine / Source | Environmental Science: Processes & Impacts |
| MU Faculty or unit | |
| Citation | |
| Web | https://pubs.rsc.org/en/content/articlelanding/em/2020/c9em00410f#!divAbstract |
| Doi | http://dx.doi.org/10.1039/c9em00410f |
| Keywords | PHYSICAL-CHEMICAL PROPERTIES; FLAME RETARDANTS; TEMPERATURE-DEPENDENCE; ORGANIC-CHEMICALS; PLASTICIZERS; PERSISTENCE; FATE; AIR; INDOOR; ATMOSPHERE |
| Description | Scientists and decision makers need accurate, accessible and fast tools to assess and prioritize the persistence (P-OV) and environmental long-range transport potential (LRTP) of chemicals. Here we evaluated the Organisation for Economic Co-operation and Development (OECD) P-OV and LRTP Screening Tool ("the Tool") with respect to the P-OV and LRTP estimates that the Tool provides for organophosphate esters (OPEs). We found that the use of default parameter values could significantly underestimate P-OV 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. |