Modeling and risk assessment of persistent, bioaccumlative and toxic (PBT) organic micropollutants in Lagos lagoon, Nigeria

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dc.contributor.authorAlani, R.
dc.contributor.authorDrouillard, K.
dc.contributor.authorOlayinka, K. O.
dc.contributor.authorAlo, B. I.
dc.date.accessioned2019-08-26T14:26:16Z
dc.date.available2019-08-26T14:26:16Z
dc.date.issued2017-12-04
dc.descriptionConference Papersen_US
dc.description.abstractLagos lagoon is the major source of seafoods to the people of Lagos and its environs. The presence of PBTs at levels that can pose potential risk to the environment and humans is a matter of concern as these pollutants potentially contribute to many of the modern day diseases including cancer, damage to the reproductive system, disrupted endocrine and immune systems, and neurobehavioral effects etc. Risk assessment of organochlorine pesticides (OCs) and polycyclic aromatic hydrocarbons (PAHs) was carried out in fish and invertebrates at different locations on the lagoon. Phenanthrene posed the highest risk to the aquatic organisms, with RQ values ranging between 1.9744 and 7.8431. Phenanthrene also gave toxic equivalence (TEQ) values of 1.1549 and 1.0975 in blue crabs and carranx hippos respectively. PBT toxicities to non endemic aquatic organisms were predicted from toxicities of surrogate species from Lagos lagoon. Species Sensitivity Distribution (SSD) estimated HC5 values were low, and cumulative probability estimations indicated that the potentially affected fractions (PAFs) of biota by Phenanthrene in the lagoon were reasonably high. Long range transport model revealed that g-HCH could persist for 405.86 days and travel 23,730.53Km from point of release. The risks posed by PBTs in fishes and invertebrates of the lagoon are hereby presented.en_US
dc.identifier.citationAlani, R. A., Drouillard, K. G., Olayinka, K. O., & Alo, B. I. (2012). Modeling and risk assessment of persistent, bioaccumlative and toxic (PBT) organic micropollutants in Lagos lagoon, Nigeria. In Book of proceeding of the chemical society of Nigeri. 35th annual international conference, Owerri, 17-21pp.en_US
dc.identifier.issn2471-9765
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/4764
dc.language.isoenen_US
dc.publisherScience Publishing Groupen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Chemistry::Analytical chemistry::Separation methodsen_US
dc.subjectEcological Risk Assessmenten_US
dc.subjectModelingen_US
dc.subjectPBTsen_US
dc.subjectBiotaen_US
dc.subjectLagos Lagoonen_US
dc.titleModeling and risk assessment of persistent, bioaccumlative and toxic (PBT) organic micropollutants in Lagos lagoon, Nigeriaen_US
dc.typePresentationen_US
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