Adam Engida, Mekonnen (2007) “Levels of trace metals in cigarettes commonly sold in Ethiopia”. Masters thesis, Addis Ababa University.
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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
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Cigarette tobacco, Trace metals, Ethiopia, Wet digestion, Atomic absorption spectrometry |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 18 Jun 2018 14:00 |
| Last Modified: | 18 Jun 2018 14:00 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/4494 |
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