Determination of heavy metal contents in fresh and used oils of street-fried foods within Ibadan and Lagos, Nigeria.

Authors

  • O.O. Abiona Department of Food Science and Technology, Osun State University, Osogbo, Nigeria.
  • A. O. Adegunwa Department of Pure and Applied Chemistry, Osun State University, Osogbo, Nigeria.
  • S. H. Awojide Department of Pure and Applied Chemistry, Osun State University, Osogbo, Nigeria.
  • A. J. Anifowose Department of Pure and Applied Chemistry, Osun State University, Osogbo, Nigeria.
  • A. O. Adeboye Department of Food Science and Technology, Osun State University, Osogbo, Nigeria.
  • O. Ogunsade Department of Food Science and Technology, Osun State University, Osogbo, Nigeria.

Keywords:

Heavy metals, used oil, contamination, traffic exhaust fumes, AAS

Abstract

Fresh and used oils in street fried foods in Lagos and Ibadan metropolis were examined for heavy metals contamination in areas where there is heavy traffic congestion to investigate the influence of traffic emission using Atomic Absorption Spectrophotometry (AAS) after acid digestion with aqua regia. Results indicated that the concentrations of the analyzed metals were higher in the used oil than the fresh oil indicating environmental contamination. Results also showed that the concentrations of As and Hg were relatively higher than other analyzed metals. There was a significant difference between the mean concentrations of metals in the fresh and used oil. The analysis of variance indicated that significant difference existed in the concentration of the fresh and used oil while correlation matrix analyses showed that most of the metals had similar chemical affinities or origin.

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Published

2024-08-07

Issue

Vol. 2 No. 1 (2018): Volume 2 Number 1, 2018

Section

Articles