20 / 21
Page 51
Notes:
conferenceseries
.com
Volume 9
Journal of Analytical & Bioanalytical Techniques
Mass Spectra & Analytika 2018
September 19-20, 2018
September 19-20, 2018 Singapore
World Congress on
Mass Spectrometry and Analytical Techniques
Quantification of selected heavy metals in chewable part of
Chata edulis
fromGurage zone, Ethiopia
Tesfaye Hailemariam, Tassew Belete, Tadesu Hailu, Dejene Ayele and Shemisu Ligani
Wolkite University, Ethiopia
F
resh chewable part of khat leaf samples were collected from three woredas of the zone namely ‘Cheha’, ‘Ezha’ and ‘Ene’.
All the collected samples were transported to Wolkite University chemistry laboratory using PE plastics. The sample was
air dried and grinded to powder size. Then the powdered
Chata edulis
sample was digested using the optimized microwave
digestion method. The concentration of five heavy metals (Mn, Zn, Pb, Cd and Cr) in the digested and diluted solutions of khat
was analyzed with FAAS and GFAAS. Among those metals, Mn and Zn were the most abundant heavy metals. Moreover, the
concentrations of toxic metals Cu, Pb and Cd in the studied
Chata edulis
leaves were too low to be detected. The order of metal
mean concentration in mg/kg is Mn>Zn>Cu=Cr=Cd. Thus, the concentration of Mn (21.55 to 23.78 mg/kg), Zn (19.93 to
323.26 mg/kg), Cd, Cr and Pd were not detected. Finally, the overall results of this study implies that, there were no significant
variations in the level of Mn between the
Chata edulis
samples, but there was significance difference between the khat samples
of the three district for Zn metal. The variation may be attributed due to deferent factors such as age of the harvested khat,
geographical and climatic variation, deference in physicochemical nature of the soil and deferent agricultural practices among
khat cultivars.
tesmariam@gmail.comJ Anal Bioanal Tech 2018, Volume 9
DOI: 10.4172/2155-9872-C2-031