Vis enkel innførsel

dc.contributor.authorChakraborty, Paromita
dc.contributor.authorZhang, Gan
dc.contributor.authorLi, Jun
dc.contributor.authorSelvaraj, Sakthivel
dc.contributor.authorBreivik, Knut
dc.contributor.authorJones, Kevin C
dc.date.accessioned2017-12-04T11:56:26Z
dc.date.available2017-12-04T11:56:26Z
dc.date.created2016-05-02T14:26:45Z
dc.date.issued2016
dc.identifier.citationChakraborty, P., Zhang, G., Li, J., Selvaraj, S., Breivik, K., Jones, K.C. (2016). Soil concentrations, occurrence, sources and estimation of air-soil exchange of polychlorinated biphenyls in Indian cities. Science of the Total Environment, 562, 928-934. doi:10.1016/j.scitotenv.2016.03.009nb_NO
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/11250/2468998
dc.description.abstractPast studies have shown potentially increasing levels of polychlorinated biphenyls (PCBs) in the Indian environment. This is the first attempt to investigate the occurrence of PCBs in surface soil and estimate diffusive air-soil exchange, both on a regional scale as well as at local level within the metropolitan environment of India. From the north, New Delhi and Agra, east, Kolkata, west, Mumbai and Goa and Chennai and Bangalore in the southern India were selected for this study. 33 PCB congeners were quantified in surface soil and possible sources were derived using positive matrix factorization model. Net flux directions of PCBs were estimated in seven major metropolitan cities of India along urban-suburban-rural transects. Mean Σ33PCBs concentration in soil (12 ng/g dry weight) was nearly twice the concentration found in global background soil, but in line with findings from Pakistan and urban sites of China. Higher abundance of the heavier congeners (6CB–8CB) was prevalent mostly in the urban centers. Cities like Chennai, Mumbai and Kolkata with evidence of ongoing PCB sources did not show significant correlation with soil organic carbon (SOC). This study provides evidence that soil is acting as sink for heavy weight PCB congeners and source for lighter congeners. Atmospheric transport is presumably a controlling factor for occurrence of PCBs in less polluted sites of India.nb_NO
dc.language.isoengnb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleSoil concentrations, occurrence, sources and estimation of air–soil exchange of polychlorinated biphenyls in Indian citiesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holder© 2016 Elsevier Ltd. All rights reserved.nb_NO
dc.source.pagenumber928-934nb_NO
dc.source.volume562nb_NO
dc.source.journalScience of the Total Environmentnb_NO
dc.identifier.doi10.1016/j.scitotenv.2016.03.009
dc.identifier.cristin1353607
dc.relation.projectNorges forskningsråd: 213577nb_NO
cristin.unitcode7460,60,0,0
cristin.unitnameMiljøkjemi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal