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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60460709:41330/16:70495

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Soils and Sediments

ISSN

1439-0108

e-ISSN

—

Svazek periodika

16

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

1569-1583

Kód UT WoS článku

000376265500015

EID výsledku v databázi Scopus

2-s2.0-84949972906