Measurement of Trace Elements in Fruit Juice and Various Food Matrices Using Ultrasonic Nebulization with ICP-AES Detection
Consumers have become more concerned about the levels of potentially toxic trace elements such as arsenic, cadmium, and lead in beverages and food. Of specific concern are products intended for consumption by children. Reliable and precise methods of food analysis are important to maintain the safety of the food supply. In addition, accurate data is necessary to comply with food labeling requirements for nutrients such as iron, calcium, sodium, and potassium. In this application various juice and food matrices are analyzed for nutrient and trace elements using an ultrasonic nebulizer with ICP-AES detection. Ultrasonic nebulization offers improved element transport efficiency versus conventional pneumatic nebulizers supplied as standard kit with ICP-AES instruments. Figures of merit will include signal enhancement, calibration, and element detection limits. Of specific interest is improved detection of more difficult elements such as arsenic and lead.