DETERMINATION OF SELECTED ESSENTIAL AND NON-ESSENTIAL  METALS IN WHITE TEFF GROWN IN DANGILA WEREDA OF AWI  ZONE, AMHARA REGION, ETHIOPIA USING FAAS

Ayinalem, Birhanu

dc.contributor.author	Ayinalem, Birhanu
dc.date.accessioned	2021-10-28T11:10:19Z
dc.date.available	2021-10-28T11:10:19Z
dc.date.issued	2021-10-28
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/12888
dc.description.abstract	Teff (Eragrostis teff (Zuccagni)) is an important cereal crop in Ethiopia. The principal use of teff grain for human food in Ethiopia is in the form of injera, a soft porous thin pancake with sour taste. In this study the levels of Essential and Non-Essential metals in white teff grains cultivated from Amhara regional state, Awi Zone at Dandila Wereda in particular areas of Kebesa, Wendi and Kansen kebel’s were determined using Flame Atomic Absorption Spectroscopy (FAAS). Wet acid digestion procedure was evaluated using a spiking method and an acceptable percentage recovery of (93.2 % - 117.7 %) has been obtained for metals in white teff. Oven dried 0.5 g white teff samples were digested using 15 mL of HNO3 and 3 mL of HClO4 at 240 for 2:30 hours. The mean concentration levels of metals in samples collected from three sampling areas indicated that higher concentration of Fe were found in samples collected from all sites. The overall mean concentrations determined (mg/Kg, dry weight) were in the ranges of Fe (124- 212) Zn (39.7-55.4) Cu (8.86-29). The result also indicates that teff is free from toxic metals, Cd and Pb which shows teff grain a good source of Essential metals. ANOVA indicated that there was a significance difference (p 0.05) between the mean concentrations of Zn and Cu among white teff samples in Kebesa and Wendi, Fe in Kebesa and Kansen, but there was no significance difference (p 0.05) between Fe in Kebesa and Wendi and Zn and Cu in Kebesa and Kansen.	en_US
dc.language.iso	en	en_US
dc.subject	Chemistry	en_US
dc.title	DETERMINATION OF SELECTED ESSENTIAL AND NON-ESSENTIAL METALS IN WHITE TEFF GROWN IN DANGILA WEREDA OF AWI ZONE, AMHARA REGION, ETHIOPIA USING FAAS	en_US
dc.type	Thesis	en_US