Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
947847
Reference Type
Journal Article
Title
Photodegradation of decabromodiphenyl ether adsorbed onto clay minerals, metal oxides, and sediment
Author(s)
Ahn, MY; Filley, TR; Jafvert, CT; Nies, L; Hua, I; Bezares-Cruz, J
Year
2006
Is Peer Reviewed?
1
Journal
Environmental Science & Technology
ISSN:
0013-936X
EISSN:
1520-5851
Volume
40
Issue
1
Page Numbers
215-220
Language
English
PMID
16433354
DOI
10.1021/es051415t
Web of Science Id
WOS:000234421400038
URL
http://pubs.acs.org/doi/abs/10.1021/es051415t
Exit
Abstract
The photodebromination of decabromodiphenyl ether (BDE-209) adsorbed onto six different solid matrixes was investigated in sunlight and by irradiation with 350 +/- 50 nm lamps (four lamps at 24 W each). After 14 days of lamp irradiation, BDE-209 degraded with a half-life of 36 and 44 days, respectively, on montmorillonite or kaolinite, with much slower degradation occurring when sorbed on organic carbon-rich natural sediment (t1/2 = 150 days). In late summer and fall sunlight (40.5 degrees N, elevation 600 ft), the half-lives of BDE-209 sorbed on montmorillonite and kaolinite were 261 and 408 days, respectively. Under both irradiation schemes, no significant loss of BDE-209 occurred when sorbed to aluminum hydroxide, iron oxide (ferrihydrite), or manganese dioxide (birnessite). Upon exposure to both lamp and solar light and in the presence of montmorillonite and kaolinite, numerous lesser brominated congeners (tri- to nonabromodiphenyl ethers) were produced. Nearly identical product distribution was evident on montmorillonite and kaolinite. Dark control experiments for each mineral showed no disappearance of BDE-209 or appearance of degradation products. These results suggest that photodegradation of BDE-209 on mineral aerosols during long-range atmospheric transport may be an important fate process for BDE-209 in the environment.
Tags
Other
•
Nanoscale Carbon
All References Cited
External Review Draft
Transport and Fate
Analytical Methods
Peer Reviewed Draft
Transport & Fate
Priority Area: Ch. 3 and Appendix D
Lower Priority Areas: Appendices G and H
Final Case Study
Product Life Cycle
Lower Priority Areas: Appendices G and H
Transport & Fate
Priority Area: Ch. 3 and Appendix D
Lower Priority Areas: Appendices G and H
Exposure, Uptake, and Dose
Lower Priority Areas: Appendices G and H
Impacts
Lower Priority Areas: Appendices G and H
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity