l'-'VESTIGATION OF LEVELS OF TRACE !VIETALS IN DIFFERENT  BRANDS OF ClGARE'ITE COMMONLY SOLD lN ETHIOPIA

WORKNEH, MECHAL

dc.contributor.author	WORKNEH, MECHAL
dc.date.accessioned	2018-06-28T03:57:28Z
dc.date.available	2018-06-28T03:57:28Z
dc.date.issued	2018-06-20
dc.identifier.uri	http://hdl.handle.net/123456789/8789
dc.description.abstract	ncreases in tobacco smoking have been associated with health implications, because a significant flux of heavy metals, among other toxins, reaches the lungs through smoking, hence Ji:e need for research into the heavy metal content of cigarettes. In this study, the levels of trace metals in tobacco cigarettes from samples of eight (8) cigarettes sold in Ethiopia were determined. A wet digestion procedure involving a 0.5 g of oven dried cigarette sample was digested using 5 mL of I lN03 and 2 ml. of H202 (30% wiv) at 200°C for 1 :30 h. Cadmium (Cd), Lead (Pb), Zinc (Zn) and Copper (Cu) contents were determined in eight (8) brands or cigarettes commonly avi~thle in Ethiopia by flame Atomic Absorption Spectroscopy (FAAS). The concentration of trace metals in the cigarettes ranged: Cd, from 0.76 to 3.08 !Lg.ig, Pb, 2.12 to 7.13 ~1gig, Zn, 13.03 to 14.04 ~tg}g with, and Cu, 5.05 to 22.23 µgig. These elements were present in all brands of cigarette and there is no significant difference among imported and local htands of cigarette; except ill few cases of imported cigarettes which have higher Ievcl of Cd. Zn anti Cu. As a result comparable results of trace metals are obtained in both imported and F.thiopian	en_US
dc.language.iso	en	en_US
dc.subject	chemistry	en_US
dc.title	l'-'VESTIGATION OF LEVELS OF TRACE !VIETALS IN DIFFERENT BRANDS OF ClGARE'ITE COMMONLY SOLD lN ETHIOPIA	en_US
dc.type	Thesis	en_US