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Natural and synthetic estrogenic compounds in the Pearl River Estuary and northern shelf of the South China Sea

Deich Carina, Kanwischer Marion, Zhang Ruifeng, Waniek Joanna J.

Oceanologia

2023

Vol. 65 (1)

30--43

Endocrine disrupting compounds and in particular estrogenic substances have the ability to interact with the hormone system of organisms. Among them are not only synthetic but also natural substances that potentially stress the aquatic ecosystem. High human population densities such as around the Pearl River Estuary (PRE) are suspected of exerting significant anthropogenic pressure onto coastal areas. In this study, natural and synthetic estrogens as well as estrogen-like substances derived from plants and fungi were investigated in the PRE and at the adjacent northern shelf of the South China Sea. Maximum concentration of 3.6 ng L−1 for estrone (E1), 0.7 ng L−1 for 17α-ethinylestradiol (EE2), 12.9 ng L−1 for genistein (GEN), 11.9 ng L−1 for daidzein (DAI) and 1.9 ng L−1 for zearalenone (ZEN) were observed. While E1 and EE2 were detected in fresh and saltwater samples, GEN, DAI and ZEN were observed only at freshwater sampling sites. During the investigations, the analysis of 17β-estradiol (E2) and EE2 indicated a strong matrix dependence. Additionally, an estrogen screen observation showed estrogenic activity in form of estradiol equivalent quotients up to 0.18 ng L−1.

Zastosowanie chromatografii gazowej do rozdzielania i oznaczania wybranych estrogenów w próbkach środowiskowych

Kumirska J., Potrykus M., Migowska N., Mulkiewicz E.

Camera Separatoria

2012

Vol. 4, No. 1

7--36

Estrogeny to związki hormonalne, których obecność w środowisku - nawet w bardzo niskich stężeniach (poniżej 1 ng/L) - może wywierać negatywny wpływ na reprodukcje i rozwój organizmów żywych. Opracowywanie odpowiednio czułych metodyk przygotowania próbki, rozdzielania i oznaczania tych związków w próbkach środowiskowych stało się zatem jednym z ważniejszych zadań z zakresu chemii analitycznej oraz ochrony środowiska. W pracy przedstawiono przegląd metodyk przygotowania próbki, rozdzielania i oznaczania wybranych substancji estrogenowych (estronu, 17β-estradiolu, estriolu, 17α-etynyloestradiolu, dietylostilbe-strolu) w różnych komponentach środowiska techniką GC-MS (ang. gas chromatography co-upled with mass spectrometry).

Estrogens are hormonal active compounds, which presence in the environment - also in very low concentrations (less than 1 ng/L) – could have a negative influence on reproduction and growth of the living organisms. Development of the sensitive methods for determination of these compounds in the environmental samples has been found as one of the most important tasks of analytical chemistry and environmental protection. In this work, a review of methods for determination of selected estrogenic compounds (estrone, 17β-estradiol, estriol, 17α-ethinyle-stradiol and diethylstilbestrol) in environmental compartments using GC-MS (ang. gas chroma-tography coupled with mass spectrometry) technique is presented.