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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/255

Title: Levels of trace metals in cigarettes commonly sold in Ethiopia
Authors: Adam, Mekonnen
Advisors: Prof. B.S. Chandravanshi
Keywords: Cigarette tobacco
Trace metals
Ethiopia
, Wet digestion, Atomic absorption
spectrometry
Copyright: 2007
Date Added: 15-Nov-2007
Publisher: Addis Ababa University
Abstract: A significant flux of heavy metals, among other toxins, reaches the lungs through smoking. This project reports the heavy metal concentrations in tobacco from samples of 11 cigarette products, sold in Ethiopia. Cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) contents were determined in 11 brands of tobacco cigarette commonly available in Ethiopia by atomic absorption spectrophotometer. The concentration of trace metals in the cigarettes ranged, Cd, from 1.3 to 7.6 μg/g with mean 2.48 ± 0.32 μg/g, Pb, 0.50 to 12.50 μg/g with mean 6.24 ± 2.2 μg/g, Cu, 2.89 to 25.35 μg/g with mean 13.70 ± 4.12 μg/g, and Zn, 24.40 to 62.55 μg/g with mean 36.22 ± 7.50 μg/g. Comparable results of trace metals are obtained in both imported and Ethiopian cigarettes. The average trace metal contents of cigarettes available in Ethiopia are Cd, 1.82 ± 0.39, Pb, 4.23 ± 0.97, Cu, 10.22 ± 3.15 and Zn, 28.18 ± 7.81 μg/cigarette and a person who smokes 20 cigarettes per day is estimated to increase his/her daily Cd, Pb, Cu and Zn retention by approximately 0.036, 0.085, 0.204, 0.564 mg/day, respectively. The results indicate that smoking and exposure to cigarette smoke is a serious problem to be taken into account when carrying out epidemiological studies on human exposure to trace metals
Description: This project work has been submitted for examination with my approval as university advisory.
URI: http://hdl.handle.net/123456789/255
Appears in:Thesis - Chemistry

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