Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia

Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight ba...

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Bibliographic Details
Published in:Food additives & contaminants Part B, Surveillance communications Surveillance communications, 2014-01, Vol.7 (1), p.30-36
Main Author: Ashenef, Ayenew
Format: Article
Language:English
Subjects:
adverse effects
aluminum
Alzheimer disease
atomic absorption spectrometry
barium
Biological and medical sciences
cadmium
Camellia sinensis
Chemical elements
Coffee, tea and other stimulative beverage industries
Commerce
copper
Environmental Exposure
Ethiopia
Flame Atomic Absorption/Emission Spectrometer (FAAS)
Food additives
Food and Agriculture Organization
Food industries
Fundamental and applied biological sciences. Psychology
graphite furnace atomic absorption spectrometer (GFAAS)
Humans
iron
kidneys
lead
Leaves
Limit of Detection
magnesium
manganese
Metals
Metals - analysis
Metals - toxicity
Parkinson disease
sodium
Spectrophotometry, Atomic
supermarkets
Tea
tea (beverage)
Tea - chemistry
toxicity
World Health Organization
zinc
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Summary:Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight basis varied from Cu: 4.7–12.9; Cd: 0.02–2.83; Pb: 
ISSN:1939-3229
1939-3210
1939-3229
DOI:10.1080/19393210.2013.831951