Evaluation of evidence that the organophosphorus insecticide chlorpyrifos is a potential persistent organic pollutant (POP) or persistent, bioaccumulative, and toxic (PBT)

Environmental Sciences Europe

Table 1 Criteria for categorization of compounds as POPs and LRT substances under the SC and UNECE

Persistent (P)	Bioaccumulative (B)	Toxic (T)	Potential for long-range transport (LRT)
Water: DT₅₀¹ > 2 months	BCF or BAF >5,000 or Log K_OW >5	No specific criteria other than ‘significant adverse human health and/or environmental effects’ (in Article 8, 7 (a))	Air: DT₅₀ > 2 days. Monitoring or modeling data that shows long-range transport via air, water, or biota
Sediment: DT₅₀ > 6 months	High bioaccumulation in other species, high toxicity or ecotoxicity
Soil: DT₅₀ > 6 months
Other evidence of persistence	Monitoring data in biota indicating that the bioaccumulation potential is sufficient to justify its consideration within the SC		Concentrations of potential concern detected in remote locations

From [2],[3], ¹DT₅₀; note that the SC uses the term half-life but does not state whether this is is for dissipation or for degradation (transformation).