Abstract
PP-30-122 Background/Aims: Steroid hormones remained in river water or soil may influence endocrine disrupting effects to ecological system even though low level of concentration. This study was performed to assess the residual level of 4 steroid hormones at river water and sediment. Methods: Estrone (E1), 17-β-estradiol (E2), estriol (E3), and 17-α-ethinylestradiol (EE2) were analyzed at water (n = 80) and sediment (n = 8) from 4 major river in Korea by LC-MS/MS technique. Water and sediment samples were prepared by continuous solid phase extraction method subsequent by liquid-liquid extraction. Results: The concentration of steroid hormone ranged ND ∼59.4 ng/L for E1, ND ∼52.8 ng/L for E2, ND ∼8.6 ng/L for E3 in river water and ND ∼5.75 ng/g for E1, ND ∼1.29 ng/g for E2 in sediment samples, respectively. EE2 was not found at any of the samples. The occurrence rate of E1 was most high; 21.3% for river water samples and 75% for sediment samples. Conclusion: We detected low concentration of steroid hormones in river water sediments in Korea.
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