Determination of Cu and Pb in solanum melongena l. by using atomic absorption spectroscopy
Abstract
The consumption of heavy metals in a large quantity may be harmful to human being. The main ways that these elements can enter human body is by ingestion. These potentially toxic elements can cause several clinical and physiological problems. The aim of this study is to determine the concentration of heavy metals in home grown and commercial Solanum Melongena L.. Home grown Solanum Melongena L. samples were grown and collected at Dusun UTM while commercial Solanum Melongena L. were bought in supermarket in Taman Universiti. Samples were digested using microwave digestion and open reflux acid digestion and lead and copper contents were determined by using Atomic Absorption Spectroscopy. The concentration of lead and copper in home grown and commercial Solanum Melongena L. were compared. All samples of Solanum Melongena L. showed average concentrations of lead and copper and is not within the range (Cu; 40 µg/g, Pb; 5 µg/g) established by International Food Standard, Food and Agriculture Organization of the United Nations (FAO) and World Health Organization (WHO). The concentration of lead and copper (µg/g) were determined by AAS for home grown Solanum Melongena L. is in the range between 3.09-3.47 µg/g, 9.72-14.22 µg/g for copper and lead respectively. Meanwhile, the concentration of lead and copper in commercial Solanum Melongena L. are in the range between 4.78-6.10 µg/g for copper and 11.44-15.28 µg/g for lead, respectively. This shows that the concentration of lead in both samples of Solanum Melongena L. are not within the standard.
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