Determination of heavy metals and other trace elements in food

1.
The effect of heavy metals and other trace elements on the human body

Although the content of trace elements in the human body is very low, but the effect on the human body is very large
.

According to the effect of trace elements in food on the human body, they are divided into essential elements and harmful elements

2.
Significance and methods of determination of heavy metals and other trace elements

The determination of heavy metals and other trace elements in food is of great significance
.

From the perspective of nutrition, it is very necessary to find out the content of each component element in food for the compatibility of food; from the perspective of hygiene, clarify the content of harmful and toxic elements in food in order to take corresponding detoxification measures; From the perspective of food processing, understanding the content of each component element in food is also of practical significance for improving processing technology, improving food quality, and controlling the amount of additives

The detection methods of trace elements in food mainly include atomic absorption spectrophotometry, colorimetry, polarography, ion selective electrode method and atomic fluorescence spectrophotometry
.

Among them, atomic absorption spectrophotometry has the advantages of good selectivity, high sensitivity, simultaneous determination of multiple elements, simplicity and speed, and has become one of the most commonly used methods for the determination of heavy metals and other trace elements