scholarly journals Synthetic estrogens, their presence in aquatic ecosystems and effects on biota

2020 ◽  
Vol 12 (1) ◽  
pp. 84-101
Author(s):  
Débora Maria Carvalho da Silva ◽  
Cléber Domingos Cunha da Silva
Keyword(s):  
Aquatic Ecosystems ◽  
Emerging Contaminants ◽  
Scientific Literature ◽  
Endocrine Disrupting Compounds ◽  
Water Bodies ◽  
Ecotoxicological Tests ◽  
Online Platforms ◽  
Endocrine Disrupting ◽  
Scientific Papers ◽  
Synthetic Estrogens

Synthetic estrogens are endocrine disrupting compounds that might be in water bodies and, consequently, interfere in hormonal, metabolic and reproductive functions of organisms exposed. This study aims to analyze the international scientific literature about those chemicals through a systematic and narrative review. The investigated estrogens were 17a-ethinylestradiol (EE2), Mestranol (MeEE2), Diethylstilbestrol (DES) and Dienestrol (DNS), which are widely present in pharmaceuticals, consumed and disposed in the environment. For this review, only scientific papers, published from 1990 to 2019, were considered. They were collected in ScienceDirect, PubMed and Scielo online platforms. Introductory information about the compounds, such as their chemical characteristics and use in society were described, as their occurrence in aquatic ecosystems and effects on biota, reported by environmental assessments and ecotoxicological tests, respectively. According to this study, China is the major contributor in quantitative terms, counting 21 articles about synthetic estrogens. Some hormones demonstrated to be more investigated than others; moreover, the increasing of research about those emerging contaminants was noticed. Additionally, Brazilian water bodies revealed to have the highest concentrations, which should encourage critical thinking on its insufficient environmental management. The study also highlights the importance of scientific research expansion and its implementation on truly effective public policies for aquatic ecosystem conservation.

scholarly journals Research trends on emerging environment pollutants – a review

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
I. Rykowska ◽  
W. Wasiak
Keyword(s):  
Natural Environment ◽  
Emerging Contaminants ◽  
Aquatic Organisms ◽  
Endocrine Disrupting Compounds ◽  
Research Trends ◽  
Multicomponent Mixtures ◽  
Groundwater Contaminants ◽  
Hormonal Imbalance ◽  
Endocrine Disrupting

AbstractConcern for the natural environment increasingly devotes more attention to growing potential hazards resulting from the release of various substances. Currently, one of the main problems associated with environmental pollution is the derivation of organic compounds from wastewater. Substances derived from sewage leaks into the environment in the form of a multicomponent mixtures often enhances the toxic effects caused by these compounds. While analyzing the reports in the literature of the last two decades it can be seen that substantial efforts are devoted to the determination of selected trace contaminants present in wastewater. Among the most marked there are endocrine disrupting compounds, residues of pharmaceuticals and personal care products, plastics and sunscreens. Recently, a new group of compounds joined the aforementioned contaminants, namely drugs, whose legality and availability is increasing every year. Exposure to these type of compounds, named in the literature as emerging contaminants (ECs), involves, among others, such effects as hormonal imbalance, reduction of the survivability of aquatic organisms and reproductive problems. This paper provides a review of the types of emerging organic groundwater contaminants (EGCs) which are beginning to be found in the natural environment in many countries all around the world.

scholarly journals Regulation of Natural and Synthetic Estrogens in Drinking Water Bodies: Reviewing Emerging Solutions for an Emerging Problem

2021 ◽  
Author(s):  
Fayga Nunes de Albuquerque Pismel ◽  
Rosane Cristina de Andrade ◽  
Daniele Maia Bila
Keyword(s):  
Emerging Contaminants ◽  
The United States ◽  
Scientific Data ◽  
Water Bodies ◽  
Legal Provisions ◽  
Regulatory Frameworks ◽  
Drinking Waters ◽  
Low Concentrations ◽  
Synthetic Estrogens ◽  
Treatment Technologies

Abstract A growing amount of data in the scientific literature indicates that emerging contaminants, such as Endocrine Disruptors Chemicals (EDCs), have increased in concentration in water bodies in recent years. The main objective of this research was to compile data on legal and regulatory frameworks of different locations regarding the control of estrogens (an EDC) in surface and drinking waters, to support regulation in countries where it has not shown significant advances. An analysis was carried out of the legal provisions aimed at guaranteeing the quality of surface and drinking waters, specifically regarding the control of estrogens, in the United States of America (USA), European Union (EU), Australia and Brazil. Among these, it is emphasized that only Australia has reference values for estrogens in water recycling for drinking purposes. Although several scientific data support the harmful effects of estrogens, several countries do not regulate the maximum values of these compounds allowed in water bodies. Some factors can influence the setting of standards for estrogens in regulations, such as the availability of affordable treatment technologies that are proven to be effective in removing these compounds and the lack of robust analytical methods with adequate limits of quantification for detection in low concentrations that can be widely employed.

In vitro assessment of sex steroids and related compounds in water and sediments – a critical review

2018 ◽  
Vol 20 (2) ◽  
pp. 270-287 ◽  
Author(s):  
Chimi Wangmo ◽  
Sergio Jarque ◽  
Klára Hilscherová ◽  
Luděk Bláha ◽  
Michal Bittner
Keyword(s):  
Sex Steroids ◽  
Aquatic Ecosystems ◽  
Endocrine Disrupting Compounds ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Endocrine Disrupting ◽  
In Vitro Assessment ◽  
Related Compounds ◽  
Water And Sediment Samples

Detection of endocrine disrupting compounds in water and sediment samples has gained much importance since the evidence of their effects was reported in aquatic ecosystems in the 1990s.

scholarly journals Current Trends in Steroidal 17α-ethynylestradiol (EE2) Removal from the Environment: A Review

2021 ◽  
pp. 1-42
Author(s):  
Wasiu A. Abibu ◽  
Gafar Bamigbade ◽  
Amos O. Kolawole ◽  
Taiwo Ajayi ◽  
Abdul W. Sakariyau
Keyword(s):  
Emerging Contaminants ◽  
Environmental Pollutants ◽  
Endocrine Disrupting Compounds ◽  
Reproductive Hormones ◽  
Current Trends ◽  
Current Review ◽  
Endocrine Disrupting ◽  
Persistent Environmental Pollutants

Emerging contaminants have posed major environmental and health challenges to human and aquatic lives. They include pharmaceuticals, endocrine disrupting compounds (EDCs), persistent environmental pollutants and many more. EE2 is an example of an endocrine disrupting compounds (EDCs) increasingly gaining acceptance and used to augment the deficiencies of other reproductive hormones. EE2 constitutes environmental nuisance via discharge into aquatic bodies, thus, threatening aquatic lives and resulting in health defects in human. It is worthy of note that previous researchers have channeled their studies to identifying ways of expelling EE2 from the environment. However, they remain persistent in the environment. The current review examined biological, chemical, physical and nanotechnological approaches in expelling EE2 from the environment. All methods discussed have been efficient in EE2 removal. From the review, both independent and combinatorial approaches in EE2 removal has yielded efficient results.

scholarly journals Screening on the sorption of emerging contaminants to polystyrene and polyethylene and use of coagulation – flocculation process for microplastics’ removal

2021 ◽  
Keyword(s):  
Magnesium Sulfate ◽  
Emerging Contaminants ◽  
Antihypertensive Drugs ◽  
Endocrine Disrupting Compounds ◽  
Synthetic Chemicals ◽  
Gradual Process ◽  
Endocrine Disrupting ◽  
Sorption Potential ◽  
Flocculation Process ◽  
Iron And Manganese

<p>In this study, preliminary experiments were conducted to investigate the sorption potential of different organic micropollutants to polystyrene and polyethylene and to examine the removal efficiency of these microplastics during coagulation experiments with iron and manganese coagulants. For the sorption experiments, eight synthetic chemicals which belong to three different categories, pharmaceutical compounds, personal care products and endocrine-disrupting compounds were used. Among target compounds, important removal due to sorption to microplastics was noticed for the antihypertensive drugs Valsartan and Losartan, when polystyrene was used as sorbent material. Their sorption was a slow and gradual process; 20% of valsartan and 59% of losartan was sorbed after 168 h. On the other hand, no sorption of parabens, bisphenol A and sulfamethoxazole was observed. The elaboration of coagulation experiments showed that polystyrene is removed to a higher percentage comparing to polyethylene, reaching 92.4% and 72.1%, respectively. The higher removal of polystyrene was achieved when ferrous sulfate or magnesium sulfate was added, while the use of ferric chloride did not improve its removal. Increased removal of polyethylene was achieved when magnesium sulfate was used. Further experiments should be conducted to investigate the parameters affecting sorption of valsartan and losartan to microplastics and the mechanisms governing removal of polystyrene and polyethylene during coagulation.</p>

scholarly journals Survey of Intersex (Testicular Oocytes) in Black Crappie Collected from the Illinois River Waterway

2018 ◽  
Vol 9 (2) ◽  
pp. 659-665
Author(s):  
Mark W. Fritts ◽  
Andrea K. Fritts ◽  
Richard M. Pendleton ◽  
Todd D. VanMiddlesworth ◽  
Levi E. Solomon ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Endocrine Disrupting Compounds ◽  
Morphometric Parameters ◽  
Illinois River ◽  
Future Research ◽  
Pomoxis Nigromaculatus ◽  
Endocrine Disrupting ◽  
Intersex Condition ◽  
Normal Males ◽  
Sport Fish

Abstract Researchers have documented intersex (testicular oocytes) in male fishes in many species worldwide and prevalence of the condition is strongly related to exposure to endocrine-disrupting compounds in aquatic ecosystems. There is no available knowledge about the incidence of intersex in Black Crappie Pomoxis nigromaculatus, an important North American sport fish. The objective of this survey was to investigate the prevalence and distribution of the intersex condition in Black Crappie collected from portions of the Illinois River waterway. We collected and examined 83 Black Crappie. We observed testicular oocytes in 22 individuals (27% intersex), representing the first documentation of intersex condition in wild Black Crappie. The number of oocytes that we observed in intersex Black Crappie ranged from 1 to 67. We documented intersex in individuals collected from all habitats, but there were no significant differences in the prevalence of the condition (Kruskal–Wallis P = 0.56) or the number of oocytes present (P = 0.25) in intersex males from the different habitats. Permutational multivariate analysis of variance indicated that morphometric parameters varied significantly among locations (P = 0.0001), but did not vary significantly between intersex and normal males. We have little information about the current distribution of endocrine-disrupting compounds in the specific regions where we collected Black Crappie for our study. However, we believe our study represents a valuable effort to detect the condition in an important sport fish and lays a foundation for future research.

Emerging Contaminants in Landfill Leachate and Their Treatment Methods

2020 ◽  
pp. 152-175
Author(s):  
Pradeep Kumar Singa ◽  
Jun-Wei Lim ◽  
Mohamed Hasnain Isa ◽  
Yeek-Chia Ho
Keyword(s):  
Aromatic Hydrocarbons ◽  
Landfill Leachate ◽  
Emerging Contaminants ◽  
Endocrine Disrupting Compounds ◽  
Environmental Matrices ◽  
Leachate Treatment ◽  
Treatment Methods ◽  
Physico Chemical ◽  
Endocrine Disrupting ◽  
Acid Esters

This chapter presents an overview of emerging contaminants in landfill leachate and their treatment methods. In addition to introducing the conventional contaminants present in the leachate, the chapter also details emerging contaminants such as poly-aromatic hydrocarbons (PAHs) and phthalate acid esters (PAEs) and their concentrations in various environmental matrices. PAHs and PAEs are highly carcinogenic, mutagenic, and teratogenic substances which is why they have attracted a lot of concern in the studies of water, air, and soil pollution. They affect the endocrinal activities in animals and humans, therefore they are known as endocrine disrupting compounds. Drawing on the treatment methods of leachate, the chapter explains physico-chemical, biological, and advanced oxidation processes. The chapter also advances the discussion on their importance and efficiency in the leachate treatment.

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