Determination of Steroidal Hormone Profiles along the Jalle d'Eysines River (near Bordeaux, France)
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- 作者：Pierre Labadie and Hé ; lè ; ne Budzinski
- 刊名：Environmental Science & Technology
- 出版年：2005
- 出版时间：July 15, 2005
- 年：2005
- 卷：39
- 期：14
- 页码：5113 - 5120
- 全文大小：145K
- 年卷期：v.39,no.14(July 15, 2005)
- ISSN：1520-5851
文摘
Steroidal estrogens have been shown to be the maincontributors to the estrogenic activity observed in aquaticsystems contaminated with sewage treatment workeffluents. Although the occurrence of steroid hormones inthe environment has received a great deal of attention,little is known about their fate in aquatic systems. In thepresent work, concentrations of conjugated and unconjugatedhormonal steroids (estrone, 17
-estradiol, estriol, 17
-ethynylestradiol, mestranol, progesterone, norethindrone,and D-norgestrel) were determined in the effluent ofthe Eysines sewage treatment plant (near Bordeaux,France), and along the receiving river, the Jalle d'EysinesRiver. Sampling was undertaken in summer and inwinter conditions, to study both the temporal and thespatial distributions of steroids in this river. Only unconjugatednatural estrogens were detected in the effluent. Estronewas the dominant compound (detected in all effluent samples,17.1-71.0 ng·L-1), while estradiol and its metaboliteestriol were detected only once, at much lower levels (4.4and 2.9 ng·L-1, respectively). Levels of estrogens wereclearly raised above the detection limits downstream of theEysines STP effluent discharge. Seasonal variations ofestrone degradation rates were observed. In summer, theapparent decay rates of estrogen levels exceeded thatof dilution, indicating high removal rates from the watercolumn: 50% of the initial amount of this steroid was degradedwithin 1.7 km downstream of the effluent discharge. Inwinter, however, estrone levels did not significantly decreaseover a 10 km reach downstream of the effluent discharge(1.9-1.8 ng·L-1). Steroids were determined in the particulate material of the river, but levels were below thedetection limits (0.4-1.9 ng·g-1), indicating that sorptionwas not a major sink of estrogens. Therefore, it is likely thatbiodegradation plays a major role in the removal ofsteroids from the river and the different decay rates areprobably related to differences in bacterial activity within theriver.
-estradiol, estriol, 17-ethynylestradiol, mestranol, progesterone, norethindrone,and D-norgestrel) were determined in the effluent ofthe Eysines sewage treatment plant (near Bordeaux,France), and along the receiving river, the Jalle d'EysinesRiver. Sampling was undertaken in summer and inwinter conditions, to study both the temporal and thespatial distributions of steroids in this river. Only unconjugatednatural estrogens were detected in the effluent. Estronewas the dominant compound (detected in all effluent samples,17.1-71.0 ng·L-1), while estradiol and its metaboliteestriol were detected only once, at much lower levels (4.4and 2.9 ng·L-1, respectively). Levels of estrogens wereclearly raised above the detection limits downstream of theEysines STP effluent discharge. Seasonal variations ofestrone degradation rates were observed. In summer, theapparent decay rates of estrogen levels exceeded thatof dilution, indicating high removal rates from the watercolumn: 50% of the initial amount of this steroid was degradedwithin 1.7 km downstream of the effluent discharge. Inwinter, however, estrone levels did not significantly decreaseover a 10 km reach downstream of the effluent discharge(1.9-1.8 ng·L-1). Steroids were determined in the particulate material of the river, but levels were below thedetection limits (0.4-1.9 ng·g-1), indicating that sorptionwas not a major sink of estrogens. Therefore, it is likely thatbiodegradation plays a major role in the removal ofsteroids from the river and the different decay rates areprobably related to differences in bacterial activity within theriver.