| Abstract: | Assessing potential exposures to toxic metals or metalloids such as arsenic and chromium in environmental materials is important in protecting public health. The chemical form of an element in, or released from, a material is also important, since some forms, such as Cr(VI), are more toxic than others, for example, Cr(III). We have used a variety of procedures to assess potential exposures to hexavalent chromium in ash and burned soils from October 2007 southern California wildfires. Synthetic lung-fluid and de-ionized water extractions simulate release in the lungs and potential environmental releases due to rainfall. Extracts were analyzed for specific chromium and arsenic species using HPLC-ICP-MS methodology. Results indicate that the highly oxidizing environment in wildfires promotes some chromium conversion to Cr(VI), and that the caustic alkalinity of ash enhances Cr(VI) release and stability in lung fluids and rainfall. |
| Genre: | USGS Numbered Series |
| ProdID: | 97159 |
| Citation Author: | Wolf, Ruth E.; Morman, Suzette A.; Plumlee, Geoffrey S. |
| Citation Contributing Office: | Mineral Resources Program |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | ii, 35 p. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2008-1350 |
| Citation Search Results Text: | Speciation Methods Used to Assess Potential Health Effects of Toxic Metals in Environmental Materials; 2008; OFR; 2008-1350; Wolf, Ruth E.; Morman, Suzette A.; Plumlee, Geoffrey S. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Speciation Methods Used to Assess Potential Health Effects of Toxic Metals in Environmental Materials; 2008; OFR; 2008-1350; Wolf, Ruth E.; Morman, Suzette A.; Plumlee, Geoffrey S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2008/1350/ |
| Date Other: | Tue, 23 Dec 2008 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
