Heavy metals contamination of water, soil, and plants around an electronic waste dumpsite

• Autorzy: Olafisoye O.B. , Adefioye T. , Osibote O. A.
• Języki publikacji: EN

Abstrakty

EN

Electronic waste (e-waste) has become a subject of growing environmental concern in developing countries due to legal/illegal import of electronics from developed nations. In this study, concentrations of heavy metals in and around the largest e-waste dumping site in Nigeria, Alaba International Market in Lagos, was investigated. Concentrations of five heavy metals, namely: cadmium (Cd), chromium (Cr), lead (Pb), nickel (Ni), and zinc (Zn) in soil, water, and plant samples during the wet and dry seasons were measured using atomic absorption spectrometry (AAS). Samples were collected between October 2011 and May 2012 and digested using standard wet digestion methods. Pb recorded the highest values, while the lowest were found for Cd in all the samples during the dry season. Heavy metal concentrations were generally lower during the wet season due to increased aeration and dilution from rainfall. Results show that the total mean concentrations of the heavy metals decreased with depth in soil samples and distance from the dumpsite. Possible sources of contamination were also discussed. A noteworthy observation was that the concentrations of most of the heavy metals under investigation exceeded maximum permissible levels.

Słowa kluczowe

EN

heavy metal; contamination; water contamination; soil contamination; plant contamination; electronic waste; waste dump; Nigeria; environment pollution; e-waste zob.electronic waste; cadmium; chromium; lead; nickel; zinc

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2013
• Tom: 22
• Numer: 5
• Opis fizyczny: p.1431-1439,fig.,ref.

Twórcy

autor

Olafisoye O.B.

• Department of Chemistry, Faculty of Applied Sciences, Cape Peninsula University of Technology, P.O.Box 652, Cape Town, 8000, South Africa

autor

Adefioye T.

• Department of Chemistry and Industrial Chemistry, Faculty of Science, Bowen University, P.M.B.284, Iwo, Osun State, Nigeria

autor

Osibote O. A.

• Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, P.O.Box 652, Cape Town, 8000, South Africa

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