IRIS Toxicological Review of Halogenated Platinum Salts and Platinum Compounds (External Review Draft)
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Abstract
EPA released the draft toxicological review for public comment under the Integrated Risk Information System (IRIS) Program. The original draft assessment (January 2009) has been archived but is available on this web page for the sake of transparency.
EPA began an assessment of the potential human health effects of halogenated platinum salts in order to address questions focused on the use of a platinum fuel additive in some clean diesel projects under the Diesel Emission Reduction Act.
EPA began an assessment of the potential human health effects of halogenated platinum salts in order to address questions focused on the use of a platinum fuel additive in some clean diesel projects under the Diesel Emission Reduction Act.
Impact/Purpose
The draft Toxicological Review of halogenated Pt salts and Pt compounds provides scientific support and rationale for the hazard and dose-response assessment pertaining to chronic exposure to halogenated Pt salts and Pt compounds. The two major uses of Pt compounds are in jewelry and in automotive emission control catalysts (catalytic converters). Evidence suggests that vehicles equipped with catalytic converters represent a significant source of Pt in ambient air, especially in areas heavily populated with automotive vehicles. Use of Pt compounds as fuel-borne catalysts in diesel fuel vehicles presents another potential source of environmental Pt.
This assessment contains the derivation of a chronic reference concentration.
Status
EPA has removed the platinum fuel additive from the list of registered additives for use in on-road diesel vehicles. Because of this, the Agency no longer has a need for the IRIS assessment of halogenated platinum salts.
Citation
U.S. EPA. IRIS Toxicological Review of Halogenated Platinum Salts and Platinum Compounds (External Review Draft). U.S. Environmental Protection Agency, Washington, DC, EPA/635/R-08/018, 2009.
History/Chronology
| Date | Description |
|---|---|
| 2005 | The IRIS assessment of Halogenated Platinum Salts and Platinum Compounds was initiated in 2005. |
| Feb 2009 | EPA released an updated external review draft for public review and comment. |
| Mar 2009 | EPA announced a public listening session for the draft review report. |
| Apr 2009 | EPA announced an external peer review workshop for the draft review report to be held on May 21st in Washington, DC. |
| Jul 2009 | EPA released the comments from the public comment period and external review workshop. |
| Apr 2013 | EPA announced that the Agency no longer has a need for this assessment. Therefore, the January 2009 draft assessment has been archived. |
Additional Information
Comments on the draft assessment were submitted to the EPA using the e-Government Regulations.gov Web site. From the site, select Environmental Protection Agency and the keyword EPA-HQ-ORD-2009-0040 (for the docket ID) to see the comments that were submitted.