Comparisons of Different Digestion Methods for Heavy Metal Analysis from Fruits

Abstract

Fruit juices are produced in home or industrially from horticultural crops by pressing the liquid part. They are rich in sugar, vitamins, and minerals like iron, copper, potassium, folate minerals, and vitamins A, B, and C which are essential for giving the body the nutrients it needs to stay healthy since fruits contain vital mineral components like copper (Cu), iron (Fe), and manganese (Mn), which is necessary for human growth and respiration. However, they may have heavy metals which may poison health risk and toxic even the presence is in little amount. Since fruit juices doesn’t pass through different processes, except extracting the liquid from the fruits of vegetables contamination and heavy metals affect human health. Before determination of heavy metals different procedures are applied for analysis. Digestion is the key component for determination of heavy metals from different samples. In this paper we are concerned on wet digestion methods for analysis. Closed system wet digestion is preferred since it lower the risk of contamination. There are different wet digestion types. Some of them are conventional wet digestion, ultraviolet digestion, ultrasound-assisted acid decomposition, conventional heating, microwave-assisted wet digestion etc. From thus, microwave digestion procedure was preferred for the digestion of samples for determination of heavy metals due to its ability to oxidize almost all of the organic samples.