Fluorescent quick detection device for benzopyrene (a) in food

Abstract

The invention discloses a fluorescence rapid detection device for benzo(a)pyrene in food, and relates to a fluorescence detection device. A rapid fluorescence detection device for benzo(a)pyrene in food with simple method, low equipment cost and fast measurement is provided. It is equipped with optical part, control and signal processing part and power supply part. The optical part is equipped with light source, excitation monochromator, sample chamber, sample pool, cryogenic device, emission monochromator and detector. The control and signal processing part is equipped with a controller, a signal amplification and differentiation module, an A / D conversion card and a computer. The power supply part is provided with a light source power supply and a detector power supply.

Description

technical field [0001] The invention relates to a fluorescence detection device, in particular to a rapid fluorescence detection device for benzo(a)pyrene in food. Background technique [0002] Polyaromatic hydrocarbons (PAHs) are a class of compounds in which at least two benzene rings are connected in the form of fused rings. crops and food. Benzo(a)pyrene has become a representative substance of polycyclic aromatic hydrocarbons due to its wide distribution, stable properties and strong carcinogenicity. The way that benzo(a)pyrene harms humans is mainly food pollution, especially the content of benzo(a)pyrene in processed food (such as smoked food, baked food and fried food, etc.) is relatively high, so it is necessary to strictly monitor. [0003] The contamination of food by benzo(a)pyrene has attracted extensive attention from all over the world, and many countries have stipulated corresponding dietary intake and food limit standards. my country's allowable limit st...

AI Technical Summary

Problems solved by technology

With my country's accession to WTO, import and export coastal cities will have higher and higher inspection requirements for polycyclic aromatic hydrocarbons such as benzo(a)pyrene in foodstuffs. However, due to the complexity of existing detection methods, many quality inspection The department failed to actually carry out the work

[0004] The analysis of PAHs in food mainly has the following three problems: (1) Most PAHs in food exist in trace levels, which are easy to be further lost during the extraction and purification process, which affects the accuracy of the test results; (2) some Organic compounds will be extracted together with polycyclic aromatic hydrocarbons, which will interfere with the following separation and quantitative detection; (3) Many polycyclic aromatic hydrocarbons have similar structures, and the separation and detection of these compounds is more difficult

Sample pretreatment is quite cumbersome and time-consuming, requires a large amount of labor, and cannot meet the requirements of rapid detection, and due to many processing steps, it may also lead to the loss of the analyte benzo(a)pyrene, reducing the reliability of the determination

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