Co-contaminants and factors affecting the sorption behaviour of two sulfonamides in pasture soils

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dc.contributor.authorSrinivasan, Prakash
dc.contributor.authorSarmah, Ajit K.
dc.contributor.authorManley-Harris, Merilyn
dc.coverage.spatialEnglanden_NZ
dc.date.accessioned2013-07-08T02:50:55Z
dc.date.available2013-07-08T02:50:55Z
dc.date.issued2013
dc.description.abstractWe investigated the effect of soil pH, organic carbon, ionic strength and steroid hormones on the sorption of sulfamethoxazole (SMO) and sulfachloropyridazine (SCP) in three pastoral soils of New Zealand. A model linking sorbate speciation with species-specific sorption coefficients describing the pH dependence of the apparent sorption coefficients was used to derive the fraction of each species of SMO. All soils displayed a decrease in sorption when pH was increased, with SMO exhibiting the highest sorption at pH 2. The cationic form of SMO appeared to sorb more close to pH ≥ pKa1 and, when pH ≥ pKa2 (6.5, 7.5 and 8.5) the anionic species seems to dominate, however, its sorption affinity to all soils was low. SMO sorption was affected by ionic strengths and organic carbon content, while the presence of hormones showed only a subtle decrease in SCP sorption in a selected model pasture soil.en_NZ
dc.identifier.citationSrinivasan, P., Sarmah, A. K. & Manley-Harris, M. (2013). Co-contaminants and factors affecting the sorption behaviour of two sulfonamides in pasture soils. Environmental Pollution, 180, 165-172.en_NZ
dc.identifier.doi10.1016/j.envpol.2013.05.022en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/7758
dc.language.isoenen_NZ
dc.publisherElsevieren_NZ
dc.relation.isPartOfEnvironmental Pollutionen_NZ
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0269749113002698en_NZ
dc.subjectveterinary antibioticsen_NZ
dc.subjectsteroid hormonesen_NZ
dc.subjectpasture soilen_NZ
dc.subjectsorptionen_NZ
dc.subjectpH-Partitioningen_NZ
dc.titleCo-contaminants and factors affecting the sorption behaviour of two sulfonamides in pasture soilsen_NZ
dc.typeJournal Articleen_NZ
pubs.begin-page165en_NZ
pubs.elements-id38519
pubs.end-page172en_NZ
pubs.volume180en_NZ
uow.identifier.article-noCen_NZ
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