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Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria
Joint Authors
Ediagbonya, Thompson Faraday
Olumayede, Emmanuel Gbenga
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-01
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The paper investigates the hypothesis that biotoxicities of trace metals depend not only on the concentration as expressed by the total amount, but also on their geochemical fractions and bioavailability.
Airborne particles were collected using SKC Air Check XR 5000 high volume Sampler at a human breathing height of 1.5–2.0 meters, during the dry season months from November 2014 to March 2015 at different locations in Akure (7°10′N and 5°15′E).
The geochemical-based sequential extractions were performed on the particles using a series of increasingly stringent solutions selected to extract metals (Cd, Cu, Cr, Ni, Pb, Zn, and Mn) into four operational geochemical phases—exchangeable, reducible, organic, and residual—and then quantified using an Atomic Absorption Spectrophotometer.
The results showed metals concentration of order Pb > Cr > Cd > Zn > Ni > Cu > Mn.
However, most metals in the samples exist in nonmobile fractions: exchangeable (6.43–16.2%), reducible (32.58–47.39%), organic (4.73–9.88%), and residual (18.28–27.53%).
The pollution indices show ingestion as the leading route of metal exposure, with noncarcinogenic (HQ) and cancer risk (HI) for humans in the area being higher than 1.0 × 10−4, indicating a health threat.
American Psychological Association (APA)
Olumayede, Emmanuel Gbenga& Ediagbonya, Thompson Faraday. 2018. Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria. The Scientific World Journal،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1215651
Modern Language Association (MLA)
Olumayede, Emmanuel Gbenga& Ediagbonya, Thompson Faraday. Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria. The Scientific World Journal No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1215651
American Medical Association (AMA)
Olumayede, Emmanuel Gbenga& Ediagbonya, Thompson Faraday. Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria. The Scientific World Journal. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1215651
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215651