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Provisional Peer-Reviewed Toxicity Values for Lanthanum
EPA announced the release of a Provisional Peer-Reviewed Toxicity Value assessment for Stable (Nonradioactive) Soluble Lanthanum (CASRN 7439-91-0).
Citation:
U.S. EPA. Provisional Peer-Reviewed Toxicity Values for Lanthanum. U.S. Environmental Protection Agency, Washington, DC, EPA/690/R-18/004, 2018.
Impact/Purpose:
Provisional Peer-Reviewed Toxicity Values (PPRTV) assessments are developed for use by the Agency’s Office of Land and Emergency Management (OLEM) to support informed decisions in the Superfund program and at hazardous waste sites when a values is not available in the Integrated Risk Information System (IRIS) database
Description:
Provisional Peer-Reviewed Toxicity Value (PPRTV) assessments support the EPA mission to protect human health and the environment by identifying and characterizing the health hazards of chemicals of concern to the Superfund and RCRA Programs, and providing an important source of toxicity information and toxicity values for such chemicals. PPRTVs [provisional oral reference doses (p-RfDs), inhalation reference concentrations (p-RfCs), cancer risk values, and screening values] are derived after a review of the relevant scientific literature and using Agency methodologies, practices, and guidance for the development of toxicity values. Other EPA programs or external parties who choose of their own initiative to use PPRTV values are advised that Superfund resources will not be used to respond to challenges of these PPRTVs used in a context outside of the EPA Superfund Program.