Presented research has been focused on the effectiveness of degradation of natural (17-estradiol - E2) and synthetic (17α-ethinylestradiol - EE2) hormones with Fenton's oxidation. Numerous studies have demonstrated, that the impact of hormones on organisms was shown already at environmental concentrations close to 1 pg L-1, so their effective removal from wastewaters is important. Fenton's oxi...

Endocrine disruptors have devastating impacts on the reproductive physiology of aquatic organisms. The Gulf pipefish, Syngnathus scovelli , is a sexually dimorphic species, which demonstrates predictable morphological, physiological, behavioral, and genetic responses to synthetic estrogen exposure. It has broad geographic range, spanning freshwater marine environments, making it potential senti...

Estrogenic hormones at significant levels are a serious cause of fish femininity, breast and ovarian cancer as consequence hormonal imbalance. This study reports the fabrication electrospun polyurethane (PU) nanofibers modified by coating with polyaniline/polyvinyl alcohol (PANI/PVA) to form filtration membranes for enhanced removal ethinylestradiol (EE2) estrogenic hormone. Structural morpholo...

This paper describes the development and validation of a PCR array for studying chemical-induced effects on gene expression of selected endocrine pathways along the hypothalamic-pituitary-gonadal (HPG) axis of the small, oviparous fish, the Japanese medaka (Oryzias latipes). The Japanese medaka HPG-PCR array combines the quantitative performance of SYBR Green-based real-time PCR with the multip...

Studies have shown that hormones endocrine disrupting properties, which characterize them as potentially toxic to the aquatic environment. This study aims monitor water along Prosa Stream/Anhanduí River monthly, evaluate its contamination by 17β-estradiol (E2) and 17α-ethinylestradiol (EE2). Dispersive liquid-liquid microextraction (DLLME) was used for analyte extraction, with acetone a dispers...

Estrogen activity was measured in wastewater effluent before and after polishing via soil-aquifer treatment (SAT) using both a (hER-beta) competitive binding assay and a transcriptional activation (yeast estrogen screen, YES) assay. From the competitive binding assay, the equivalent 17alpha-ethinylestradiol (EE2) concentration in secondary effluent was 4.7 nM but decreased to 0.22 nM following ...

In this paper, the degradation of three endocrine-disrupting chemicals (EDCs): bisphenol A (BPA), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) by manganite (γ-MnOOH) activated peroxymonosulfate (PMS) was investigated. Preliminary optimisation experiments showed that complete EDCs achieved after 30 min reaction using 0.1 g L−1 γ-MnOOH 2 mM PMS. The rate constants were determined to be 0.20,...

Bisphenol-A (BPA), 17?-ethinylestradiol (EE2), and 4-nonylphenol (4NP) are endocrine-disrupting chemicals (EDCs) that useful models for studying the potential fate transport of EDCs in soil water environments. Two alluvial soils with contrasting physicochemical properties were used as adsorbents this study. The Zook material had more organic matter clay than sandy loam Hanlon material. Batch eq...

In the present work, degradation of three estrogens (17?-estradiol (E2), estrone (E1) and 17?-ethinylestradiol (EE2)) was investigated under photoactivation hydrogen peroxide persulfate. Lab-scale irradiation experiments showed that both UVA UVB radiations are able to photoactivate oxidant precursors, although is more efficient generate radicals therefore degrade targets. The efficiency precurs...