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DETERMINATION OF HEAVY METALS IN FOOD WITH MICROWAVE DIGESTION AND ICP-AES

Lai Hui-qin

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Abstract

The samples were microwave-assistedly digested with nitric acid-hydrogen peroxide for ICP-AES determination of zinc,iron,magnesium,copper,cadmium,and chromium and arsenic.The RSD was less than 6 %,and the spike recoveries were in 92.6 %-106 %.The determination of limits were within 0.764 μg/L-1.537μg/L.This method was fast,stable and accurate,and suitable for determination of the 7 heavy metal elements in food.

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What this paper is about

The samples were microwave-assistedly digested with nitric acid-hydrogen peroxide for ICP-AES determination of zinc,iron,magnesium,copper,cadmium,and chromium and arsenic.The RSD was less than 6 %,and the spike recoveries were in 92.6 %-106 %.The determination of limits were within 0.764 μg/L-1.537μg/L.This method was fast,stable and accurate,and suitable for determination of the 7 heavy metal elements in food.

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Available abstract

The samples were microwave-assistedly digested with nitric acid-hydrogen peroxide for ICP-AES determination of zinc,iron,magnesium,copper,cadmium,and chromium and arsenic.The RSD was less than 6 %,and the spike recoveries were in 92.6 %-106 %.The determination of limits were within 0.764 μg/L-1.537μg/L.This method was fast,stable and accurate,and suitable for determination of the 7 heavy metal elements in food.

Key concepts: Microwave digestion, Cadmium, Chemistry, Zinc, Nitric acid, Chromium, Arsenic, Inductively coupled plasma atomic emission spectroscopy

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