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KMID : 0881720130280010045
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Journal of Food Hygiene and Safety
2013 Volume.28 No. 1 p.45 ~ p.49
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Detection of Heavy Metal Contents in Sesame Oil Samples Grown in Korea Using Microwave-Assisted Acid Digestion
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Park Min-Kyoung
Yoo Ji-Hyock
Lee Je-Bong
Im Geon-Jae
Kim Doo-Ho
Kim Won-Il
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Abstract
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This study aimed to determine heavy metal contents in sesame oil samples produced in Korea through microwave-assisted acid digestion without using an emulsifier. Three heavy metal, cadmium (Cd), lead (Pb) and arsenic (As) in twelve sesame oil samples were determined by ICP-MS. The validation of analysis method was checked by standard addition method (10 and 100 μg/kg). As a result, linearity (R2) was above 0.999 and RSDs were lower than 4%. The recovery of Cd, Pb and As ranged between 98.5-101.6%, 100.3-101.3%, and 102.1-111.2%, respectively. The detected ranges in sesame oil samples were as follows; N.D. to 0.109 μg/g for Cd, 0.014 to 0.200 μg/ g for Pb and 0.014 to 0.125 μg/g for As, respectively. Therefore, sesame seeds and products grown in heavy metalpolluted regions which are used as food should be given priority attention and consideration.
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KEYWORD
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heavy metal, microwave-assisted acid digestion, sesame oil
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