Distribution of macrolides, sulfonamides and trimethoprim in tropical and temperate waters: Comparison between Vietnam and Japan

ENVR 185

Satoshi Managaki, managaki@env.t.u-tokyo.ac.jp1, Ayako Murata2, Ayako Takeshita2, Hideshige Takada, shige@cc.tuat.ac.jp2, and Cach Tuyen Bui3. (1) Department of Urban Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan, (2) Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan, (3) Nong Lam Unversity, Vietnam
We investigated the distributions of sulfonamides, macrolides and trimethoprim in water samples from the Mekong delta, Vietnam and the urban rivers in Japan. Sensitive determination using liquid chromatograph equipped with tandem mass spectrometer (LC-MS/MS) following solid-phase extraction was employed. In the Japanese urban rivers, a variety of antibiotics was observed with concentration range from tens ng/L to hundreds ng/L. In Vietnam, only a few kinds of antibiotics (i.e., sulfamethoxazole, sulfamethazine, trimethoprim and erythromycin-H2O) were detected in the waters from the Mekong delta with a concentration range of 7-360 ng/L. Sulfamethazine, especially which is used mostly for veterinary medicine, occurred ubiquitously in the river waters in Vietnam with relatively high concentrations (i.e., 15 ng/L to 328 ng/L). Extremely high concentrations of sulfamethazine (18.5 μg/L and 19.1 μg/L) were detected in pig farm wastewaters. All these data indicate wide-spread inputs of veterinary medicines to tropical waters and human-used antibiotics input to Japanese urban rivers.
 

Symposium Honoring Dr. Walter Giger
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007