High estrogen concentrations in receiving river discharge from a concentrated livestock feedlot

in Social Sciences Citation Index(SSCI), 社會科學引用文獻索引資料庫(SSCI)
標題High estrogen concentrations in receiving river discharge from a concentrated livestock feedlot
出版類型SSCI(Social Sciences Citation Index)
AuthorsTe-San Chen, 陳得三, Ting-Chien Chen 陳庭堅, C. Kuei-Jyum Yeh 葉桂君, How-Ran Chao/Hao-Jan Chao 趙浩然, Ean-Duan Liaw 廖遠東, Chi-Ying Hsieh 謝季吟, Kuan-chung Chen 陳冠中, Lien-Te Hsieh 謝連德, & Shyu 葉一隆
出版日期2010 / 7

Environmental estrogenic chemicals interrupt endocrine systems and generate reproductive abnormalities
in wildlife, especially natural and synthetic estrogenic steroid hormones such as 17β-estradiol (E2), estrone
(E1), estriol (E3), 17α-ethynylestradiol (EE2), and diethylstilbestrol (DES). Concentrated animal feedlot
operations (CAFOs) are of particular concern since large amounts of naturally excreted estrogens are
discharged into aquatic environments. This study investigated E2, E1, E3, EE2, and DES with high
performance liquid chromatography/tandem mass (HPLC–MS/MS) analyses along Wulo Creek in southern
Taiwan, near a concentrated livestock feedlot containing 1,030,000 broiler chickens, 934,000 laying hens,
85,000 pigs, and 1500 cattle. Sampling was performed from December 2008 to May 2009, in which 54
samples were collected. Experimental results indicate that concentrations of EE2 were lower than the limit of
detection (LOD), and concentrations of DES were only detected twice. Concentrations ranged from 7.4 to
1267 ng/L for E1, from not detected (ND) to 313.6 ng/L for E2, and from ND to 210 ng/L for E3. E1 had the
highest average mass fraction (72.2 ±3.6%), which was signi fi cantly higher than E3 (16.2 ±1.7%) and E2
(11.5 ±2.6%). Additionally, the mean E2 equivalent quotient (EEQ) ranged from 17.3 to 137.9 ng-E2/L.
Despite having a markedly lower concentration than E1, E2 more signi fi cantly contributed (52.4±6.0%) EEQ
than E1 (19.7±3.5%). Moreover, the concentrations of E2, E1, and E3 upstream were signi fi cantly higher
than concentrations downstream, suggesting a high attenuation effect and fast degradation in the study
water. Most concentrations in winter season were higher than those of spring season due to the low dilution
effect and low microbial activity in the winter season. Based on the results of this study, we recommend
further treatment of the wastewater discharge from the feedlot.

期刊名稱 Science of the total Environment
校址:912 屏東縣內埔鄉學府路1號 總機:886-8-7703202 傳真:886-8-7740165 系統開發統維護單位:國立屏東科技大學 電算中心 版權所有