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

doi:10.1016/j.oceano.2021.08.001

Cited by 143 publications

(1 citation statement)

References 55 publications

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“…Even when detected at low levels in the μg L −1 and ng L −1 range, endocrine disruptors can result in environmental hazards to human and animal health (Bila & Dezotti, 2007; Liu et al., 2018), potentially leading to harmful effects (Deich, Kanwischer et al., 2021b; Ismail et al., 2019; Li et al., 2021). These include decreased egg hatching and reproductive issues in fish, reptiles, birds, mammals, as well as imposex—male feminization and female masculinization—in addition to immune system alterations and endocrine disruptions, among others (Hsieh et al., 2013; Rocha et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Estrogenic activity and acute toxicity assessments of sediments from a chronically polluted estuarine area in southeastern Brazil

Santos,

Nascimento,

Argolo

et al. 2023

Environmental Quality Mgmt

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Compounds displaying estrogenic potential can lead to serious negative aquatic ecosystem impacts, and exposure to mixtures of endocrine disruptors present in environmental matrices with very complex characteristics, including sediments, can cause serious risks to biota, animals, and humans. Within this perspective, the aim of the present study was to assess estrogenic activity and toxicity in sediments sampled from Guanabara Bay, the most important, although chronically polluted, estuary in southeastern Brazil. To this end, estrogenic activity determinations were performed by the yeast estrogen screen (YES) assay, and acute toxicity assays were carried out employing Vibrio fischeri. Estrogenic activity was quantified up for 8.7 ng g−1 in E2‐EQ, although high levels of cytotoxicity (up to 95%) were observed and might have hindered the determination of the real estrogenic potential in most samples. Acute toxicity to V. fischeri ranged from 0 to 45.21%. These results point to potential deleterious effects caused by micropollutants and underline the urgency of continuous monitoring of the degradation degree of the Guanabara Bay estuary.

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Section: Introductionmentioning

confidence: 99%

Estrogenic activity and acute toxicity assessments of sediments from a chronically polluted estuarine area in southeastern Brazil

Santos,

Nascimento,

Argolo

et al. 2023

Environmental Quality Mgmt

View full text Add to dashboard Cite

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Removal of 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) by a sequencing batch reactor following UV/H2O2 process

da Mota Oliveira,

de Souza,

Gomes

et al. 2024

Int. J. Environ. Sci. Technol.

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Enhanced removal of estrogens from simulated wastewater by biochar supported nanoscale zero-valent iron: performance and mechanism

Han,

Xu,

Wang

et al. 2023

Biochar

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The intensification of estrogen non-point source pollution has drawn global attention due to their contribution to ecological environment problems worldwide, and it is critical to develop effective, economic and eco-friendly methods for reducing estrogens pollution. To address the agglomeration and oxidation of nano zero-valent iron (nZVI), biochar-nanoscale zero-valent iron composite (nZVI-biochar) could be a feasible choice for estrogens removal. This study summarized biochar and nZVI-biochar preparation, characterization, and unusual applications for estrone (E1), 17β-estradiol (E2), and estriol (E3) removal. The properties of biochar and nZVI-biochar in characterization, effects of influencing factors on the removal efficiency, adsorption kinetics, isotherm and thermodynamics were investigated. The experiment results showed that nZVI-biochar exhibited the superior removal performance for estrogens pollutants compared to biochar. Based on the quasi-second-order model, estrogens adsorption kinetics were observed, which supported the mechanism that chemical and physical adsorption existed simultaneously on estrogens removal. The adsorption isotherm of estrogens could be well presented by the Freundlich model and thermodynamics studies explained that nZVI-biochar could spontaneously remove estrogens pollutants and the main mechanisms involved π-π interaction, hydrophobic interaction, hydrogen bonding and degradation through ring rupture. The products analyzed by GC–MS showed that estrogens degradation was primarily attributed to the benzene ring broken, and Fe3+ promoted the production of free radicals, which further proved that nZVI-biochar had the excellent adsorption performances. Generally, nZVI-biochar could be employed as a potential material for removing estrogens from wastewater. Graphical Abstract

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

Cited by 143 publications

References 55 publications

Estrogenic activity and acute toxicity assessments of sediments from a chronically polluted estuarine area in southeastern Brazil

Estrogenic activity and acute toxicity assessments of sediments from a chronically polluted estuarine area in southeastern Brazil

Removal of 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) by a sequencing batch reactor following UV/H2O2 process

Enhanced removal of estrogens from simulated wastewater by biochar supported nanoscale zero-valent iron: performance and mechanism

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