Detection of metal element residues in food

Common methods for detecting metal content in food:

Inductively coupled plasma atomic emission spectrometry

The working principle of inductively coupled plasma atomic emission spectrometry is to use inductively coupled plasma as an excitation light source to excite various elements and spectral lines generated between various atoms in the test sample. Therefore, the wavelengths and lengths of different spectral lines themselves can provide a basis for inspectors to determine the content of heavy metals. For example, inspectors can use the IPC-AES detection method to specifically detect the content of various harmful heavy metals such as cadmium, arsenic, lead, tin, copper, and chromium in fruits and vegetables. The average recovery rate of this detection method is 91%~107%, the RSD value does not exceed 3.5%, and the minimum detection limit for cadmium is determined to be 0.03

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