Effects of combined sewer overflows and storm water drains on metal bioavailability in small urban streams (Prague metropolitan area, Czech Republic)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00308436" target="_blank" >RIV/68407700:21110/16:00308436 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41330/16:70495

Result on the web

<a href="http://link.springer.com/article/10.1007/s11368-015-1327-8" target="_blank" >http://link.springer.com/article/10.1007/s11368-015-1327-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11368-015-1327-8" target="_blank" >10.1007/s11368-015-1327-8</a>

Result language

angličtina

Original language name

Effects of combined sewer overflows and storm water drains on metal bioavailability in small urban streams (Prague metropolitan area, Czech Republic)

Original language description

The purpose of the study was to evaluate the effect of combined sewer overflows (CSO) and storm water drains (SWD) on metal bioavailability in small urban streams in Prague, and to evaluate levels of metals in water, sediment, and macroinvertebrates. The following working hypotheses were adopted: a) Sites dominantly affected by SWD are less polluted by metals; b) Sites dominantly affected by SWD have higher bioavailability of metals. Concentrations of metals in water as well as in sediment at sites receiving water from SWD were lower than at sites where creeks receive water from CSO, except for Pb. Concentrations of Cu, Zn and Pb in sediment were higher at sites affected by CSO. Concentrations of metals in aquatic macroinvertebrates, expressed as BSAF, indicated higher values at sites affected by SWD. Frequencies of high BSAF (> 1) were lower in CSO compared to SWD. This finding was explained by a) decrease of pH on SWD sites compared to increase of pH on CSO sites during rain events, b) greater re-suspension of sediment at SWD sites during rain events, and c) an abundance of organic matter in CSO available for sorption of metals and a corresponding reduction of their bioavailability. In the study area, the type of urban drainage affects the bioavailability of metals - while SWD increase metal bioavailability, CSO cause its decrease. The sediments in SWD sites do not indicate risk to the benthic community according to the applied environmental quality standards. Water and sediment in creeks affected by SWD are less polluted by metals. Both working hypotheses were therefore supported.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DJ - Pollution and water control

OECD FORD branch

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Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2016

Confidentiality

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

Name of the periodical

Journal of Soils and Sediments

ISSN

1439-0108

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

5

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

1569-1583

UT code for WoS article

000376265500015

EID of the result in the Scopus database

2-s2.0-84949972906