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Assessment of loose and adhered urban street sediments and trace metals: a study in the city of Po double dagger os de Caldas, Brazil

2016-07Journal article Open access
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dc.contributor.authorSilveira, Alexandre
dc.contributor.authorPereira Jr. , José A.
dc.contributor.authorPoleto, Cristiano
dc.contributor.authorLima, João L. M. P. de
dc.contributor.authorGonçalves, Flávio A.
dc.contributor.authorAlvarenga, Livia A.
dc.contributor.authorMGP Isidoro, Jorge
dc.date.accessioned2017-04-07T15:55:50Z
dc.date.available2017-04-07T15:55:50Z
dc.date.issued2016-07
dc.description.abstractThis study aims to quantify and characterise sediments accumulated in the street gutters in an urban area of Po double dagger os de Caldas, Brazil. The main research questions are: What type of urban areas, e.g. those under construction, produce most sediments and what are the main characteristics of such sediments? What differences, e.g. granulometry, can be found in loose and adhered sediments? What trace metals can be found in the sediments?Fieldwork was carried out in a residential area of Po double dagger os de Caldas, Brazil. Ten samplings were conducted between May and August 2013 to collect sediments from road gutters. The collected sediments were then divided into 'loose' and 'adhered', depending on whether they were collected in a first, gentle, sweeping with soft bristled brush or in a subsequent sweeping with a stiff bristled brush. Granulometric curves were drawn for both types of sediments. Fine sediment analyses (aecurrency sign63 mu m) were performed on samples from the last five samplings. Two techniques were used to look for trace elements: energy dispersive X-ray fluorescence (EDXRF) and inductively coupled plasma-atomic emission spectrometry (ICP-AES).Larger amounts of sediments were collected after lower intensity rainfall events. Higher intensity events seemed to wash the sediments away. A correlation was found between areas under construction and sediment mass production. A characteristic range of granulometries (medium sand), found in our study is in accordance with studies by other authors. An important presence of heavy metals (Cr, Cd, Pb, Zn, Ni and Cu) was detected and characterised. As and Sn were also detected even though they are not often mentioned in the literature on urban soil pollutants.Areas under construction were found to produce more sediments than other areas. The trace metals found in highest concentrations were Pb and As. The heavy metal concentration decreases after wet periods, showing that they are carried by runoff. It is expected that this study may serve as an input for establishing diffuse pollution control and mitigation strategies for the accumulation of pollutants in the urban environment.
dc.description.sponsorshipCiência sem Fronteiras (CSF)’, project n.88881.030412/2013-01.
dc.identifier.doi10.1007/s11368-016-1467-5
dc.identifier.issn1439-0108
dc.identifier.otherAUT: JIS01119;
dc.identifier.urihttp://hdl.handle.net/10400.1/9235
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonWOS:000385206400013
dc.titleAssessment of loose and adhered urban street sediments and trace metals: a study in the city of Po double dagger os de Caldas, Brazil
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2650
oaire.citation.issue11
oaire.citation.startPage2640
oaire.citation.titleJournal of Soils and Sediments
oaire.citation.volume16
person.familyNameIsidoro
person.givenNameJorge
person.identifierR-000-7SY
person.identifier.ciencia-idA617-A962-DE4F
person.identifier.orcid0000-0002-6901-5652
person.identifier.ridN-1814-2015
person.identifier.scopus-author-id55250130500
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationce8b5f4a-f058-4320-b57b-0cb775918b7b
relation.isAuthorOfPublication.latestForDiscoveryce8b5f4a-f058-4320-b57b-0cb775918b7b

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