On-line detection device and method for heavy metals in fruits

Abstract

The invention discloses an on-line detection device and method for heavy metals in fruits, and belongs to the technical field of spectral analysis. The device comprises a spectral measurement unit and a control unit, wherein the spectral measurement unit is electrically connected with the control unit; the spectral measurement unit comprises a laser induced breakdown spectral measurement unit and a data detection unit, and the laser induced breakdown spectral measurement unit is electrically connected with the data detection unit; the laser induced breakdown spectral measurement unit comprises a laser device for producing laser light and a focusing lens for enabling the laser light to be focused, and the focusing lens is positioned below the laser device; the data detection unit is used for collecting spectral signals and forming spectral data; and the control unit is used for calculating the contents of heavy metals in sample fruits according to the spectral data. The device disclosed by the invention can avoid measuring errors, has few requirements on the quantity of sample fruits, has development potential in the fields of metallurgy, food quality safety, environment monitoring and the like, and is of practical meaning in promoting the practice of the laser induced breakdown spectral technique.

Description

technical field [0001] The invention relates to the technical field of spectral analysis, and more specifically, to an online detection device for heavy metals in fruits and an online detection method for heavy metals in fruits used in the device. Background technique [0002] Food quality and safety has increasingly become the focus of social attention. With the continuous increase of fruit production and the continuous improvement of people's living standards, consumers not only pay attention to the choice of fruit appearance quality, but also pay more attention to the internal quality of fruits, such as pesticide residues and heavy metal content. At present, the fruit quality grading technology in China is relatively mature, which is to grade the external quality of fruit, such as size, color, etc. However, in recent years, the research on the internal quality of fruit has also developed rapidly, but most of the research is on taste, However, there are few researches on ...

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Problems solved by technology

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose an online detection device and method for heavy metals in fruits to solve the problems in the prior art that are time-consuming, laborious, unable to realize on-site analysis and detection, and easy to form The problem of secondary pollution of sample food

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