| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 102 === Emerging contaminants (ECs) such as pharmaceuticals, hormones, synthetic musk fragrances, and perfluorinated compounds have become the new environmental focus due to their potential risks and universal distribution. Among these ECs, endocrine disruptors (EDCs) can interfere with the normal function of the endocrine system and are therefore widely discussed when detected in river and sewage plant effluent. In this study, we assessed different EDCs including alkylphenols (NP, OP, BPA) and estrogens (E1, E2, E3, EE2, DES) in river water sediment, pore water, and fish from two rivers (River ER and River LK) located in southern Taiwan. Target compounds in 38 water, 38 sediment, and 95 fish samples were analyzed by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Average concentrations in River ER were 0.13 (E1), 0.2 (E2), 0.12 (E3), 87.77 (NP), and 12.14 (BPA) ng/L. Average concentrations of target compounds in four River LK stations were 1.74 (E1), 12.24 (E2), 2.09 (DES), and 29.21 (BPA) ng/L. Average porewater concentrations from River ER were 13.27 (E1), 147.97 (E2), 71.10 (DES), 81.37 (NP), and 2228.03 (BPA) ng/L, and mean pore water concentrations in River LK were 20.25 (E1), 184.13 (E2), 149.38 (DES), 336.25 (NP), and 582.75 (BPA) ng/L. Mean surface water and porewater concentrations of estrogenic compounds in River LK were higher than in River ER, but the distribution of alkylphenols tended to be different.
The average sediment concentrations in River ER were 18.81 (E1), 12.58 (E2), 3.78 (E3), 37.43 (EE2), 38.4 (DES), 180.23 (NP), 24.28(OP) and 96.45(BPA) ng/g; Mean sediment concentrations in River LK were 22.0 (E1), 33.07 (E2), 91.71 (EE2), 26.68 (DES), 347.74 (NP), 13.44 (OP) and 148.80 (BPA) ng/g. The mean sediment concentrations of estrogenic and alkylphenolic compounds in River LK were higher than in River ER. The average concentrations of compounds in fish collected from five stations in River ER were 2.24 (E1), 14.87 (E2), 0.39 (E3), 0.82 (EE2), 2.33 (DES), 0.73 (OP), and 82.95 (BPA) ng/g. The highest concentrations were found in ER3 stations in Elops machnata, followed by Arius maculatus. Fish concentrations in the order of site were site C > site A> site B in River LK. The mean concentrations were 1.04(E1)、6.24 (E2)、1.94(E3)、0.63(DES) and 1.45(BPA) ng/g. The BCF of E2 and BPA in River ER were 12897 and 12793, while compounds E1 and E2 were 515 and 488 in River LK. In addition, the BSAF of DES and BPA in River ER were 0.12 and 1.3, while compounds E1 , E2, DES and BPA were 0.006、0.017、0.013 and 0.003 in River LK.
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