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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Topp, Edward Hendel, John G. Lapen, David R. Chapman, Ralph |
| Spatial Coverage | Ontario |
| Description | Author Affiliation: Topp E ( Agriculture and Agri-Food Canada, Southern Crop Protection and Food Research Center, 1391 Sandford Street, London, Ontario. toppe@agr.gc.ca) |
| Abstract | Naproxen (2-(6-methoxy-2-naphthyl) propionic acid) is widely used for the treatment of pain and swelling associated with arthritis, gout, and other inflammatory conditions. Naproxen has been detected in municipal sewage outflows and in surface waters and could reach agricultural land through the application of municipal biosolids or reclaimed water. The persistence characteristics of naproxen in three agricultural soils were investigated. In laboratory microcosms of moist soil incubated at 30 degrees C, [O-14CH3]naproxen was rapidly and thoroughly mineralized to 14CO2 with comparable kinetics in a sandy loam soil, a loam soil, and a silt loam soil. Naproxen mineralization was responsive to soil temperature and soil moisture content, consistent with the primary mechanism of dissipation being biodegradation. Mineralization of naproxen was hastened by the addition of liquid municipal biosolids (LMBs) from a municipal sewage treatment plant that aerated this material. Naproxen was stable in autoclaved soils with or without addition of autoclaved LMBs, whereas naproxen was rapidly mineralized in sterile soil supplemented with nonsterile LMBs. An enrichment culture was obtained from aerobically digested LMBs in a mineral salts medium with naproxen as the sole source of carbon. The culture converted the parent compound to the corresponding naphthol, O-desmethyl naproxen. In summary, naproxen was rapidly removed from soil, with mesophilic aerobic biodegradation being the primary mechanism of dissipation. Microorganisms carried in biosolids enhanced naproxen dissipation in soil, with the initial mechanism of attack likely being O-demethylation. We conclude on this basis that naproxen in soils receiving biosolids would be readily biodegradable and, in the absence of preferential flow or runoff, pose little risk for contamination of adjacent water or crops. |
| File Format | HTM / HTML |
| ISSN | 07307268 |
| Issue Number | 10 |
| Volume Number | 27 |
| e-ISSN | 15528618 |
| Journal | Environmental Toxicology and Chemistry |
| Language | English |
| Publisher | Wiley |
| Publisher Date | 2008-10-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biodegradation, Environmental Water Soil Pollutants Research Support, Non-u.s. Gov't Temperature Soil Microbiology Discipline Environmental Health Discipline Toxicology Waste Disposal, Fluid Chromatography, High Pressure Liquid Spectrophotometry, Ultraviolet Journal Article Sewage Analysis Naproxen Humidity Soil Discipline Chemistry Anti-inflammatory Agents, Non-steroidal Agriculture Kinetics Ontario |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis |
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