Estrogenic activity and contributing compounds in stagnant water bodies with massive occurrence of phytoplankton

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F18%3A43897234" target="_blank" >RIV/60076658:12310/18:43897234 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/18:00100973

Result on the web

<a href="https://reader.elsevier.com/reader/sd/DAF9A61C5F4A9B70AE33DCAC9D472C2844618DD36E78D1C8A3E01E26AA13FD29E177AE493634DF91584F12801C367620" target="_blank" >https://reader.elsevier.com/reader/sd/DAF9A61C5F4A9B70AE33DCAC9D472C2844618DD36E78D1C8A3E01E26AA13FD29E177AE493634DF91584F12801C367620</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.watres.2018.02.040" target="_blank" >10.1016/j.watres.2018.02.040</a>

Result language

angličtina

Original language name

Estrogenic activity and contributing compounds in stagnant water bodies with massive occurrence of phytoplankton

Original language description

Stagnant water bodies have generally received little attention regarding the presence of endocrine disruptive compounds, although they can integrate diverse pollutants from multiple different sources. Many compounds of anthropogenic as well as natural origin can contribute to the overall estrogenicity of surface waters and some of them can exhibit adverse effects on aquatic biota even in very low concentrations. This study focused on freshwater ponds and reservoirs affected by water blooms and determined the estrogenic activity of water by in vitro bioassay as well as concentrations of several important groups of estrogenic compounds (estrogenic hormones, alkylphenols, and phytoestrogens) by LC-MS/MS analyses. Estrogenic hormones were found at concentrations up to 7.1 ng.L-1, similarly to flavonoids, whose concentrations did not exceed 12.5 ng.L-1. Among alkylphenols, only bisphenol A and 4-tert-octylphenol were detected in levels reaching 100 ng.L-1 at maximum. Estrogenic activity of water samples varied from below the quantification limit to 1.95 ng.L-1. There does not seem to be any general causal link of the massive phytoplankton occurrence with the estrogenicity of water or concentration of phytoestrogens, since they showed no direct relationship with the phytoplankton abundance or composition across sites. The contribution of the analysed compounds to the estrogenic activity was calculated in three scenarios. In minimum scenario, just the compounds above quantification limit (LOQ) were taken into account and for most samples, only minor part (&lt;6%) of the biological activity could be explained. In the mean and maximum scenarios, we included also compounds below LOQ into the calculations at the level of LOQ/2 and LOQ respectively. In these cases, a considerable part of the estrogenic activity could be attributed to the possible presence of steroid estrogens below LOQ However, for the samples with estrogenic activity greater than 1 ng.L-1, more than 50% of the estrogenic activity remained unexplained even in the maximum scenario. Probably other compounds or possible interactions between individual substances cause the estrogenic activity in these types of water bodies and in this case, the results of LC-MS/MS analyses cannot sufficiently predict the biological effects. A complex approach including bioassays is needed when assessing the estrogenicity of these types of surface waters.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water Research

ISSN

0043-1354

e-ISSN

—

Volume of the periodical

136

Issue of the periodical within the volume

JUN 1 2018

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

12-21

UT code for WoS article

000429397700002

EID of the result in the Scopus database

2-s2.0-85042438349