Device for detecting aflatoxin by aid of ultraviolet fluorescence spectra in online manner

A technology of aflatoxin and fluorescence spectrum, which is applied in the field of on-line detection devices for aflatoxin, can solve problems such as weak fluorescence absorption, and achieve the effects of improving detection efficiency, avoiding influence, and improving light energy utilization

Pending Publication Date: 2017-02-22
CHINA HEFEI TAIHE OPTOELECTRONICS TECH
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Problems solved by technology

[0004] An online aflatoxin detection device using ultraviolet fluorescence spectrum proposed by the present invention overcomes the shortcomings of existing ultraviolet fluorescence imaging, adopts reflective structure layout, avoids the problem of transmissive structure absorbing weak fluorescence, and improves the utilization rate of light energy

Method used

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  • Device for detecting aflatoxin by aid of ultraviolet fluorescence spectra in online manner
  • Device for detecting aflatoxin by aid of ultraviolet fluorescence spectra in online manner
  • Device for detecting aflatoxin by aid of ultraviolet fluorescence spectra in online manner

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing:

[0026] A kind of aflatoxin online detection device utilizing ultraviolet fluorescence spectrum of the present embodiment, such as figure 1 As shown, it includes a material conveying system 101, a material to be tested 102, an ultraviolet lighting system 201, and a detection sensing part 301. The ultraviolet lighting system 201 includes an ultraviolet lighting unit A 201A and an ultraviolet lighting unit B 201B. Wherein, the principle schematic diagram of the detection sensing part 301 is as follows: figure 2 As shown, it includes a multi-faceted rotating mirror 202 , a reflective convergence system 1 203 , a slit mask 204 , a reflective collimation system 205 , a reflective one-dimensional phase grating 206 , a reflective convergence system 2 207 , and a photodetection unit 208 .

[0027] The reflective one-dimensional phase grating 206 includes a non-reflective and non-t...

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Abstract

The invention discloses a device for detecting aflatoxin by the aid of ultraviolet fluorescence spectra in an online manner. By the aid of the device, shortcomings of existing ultraviolet fluorescence imaging can be overcome. The device comprises a material conveying system, an ultraviolet illuminating system and a detecting sensing portion. The detecting sensing portion comprises a polygonal rotary mirror, a first reflection type convergence system, a slit mask plate, a reflection type collimation system, a reflection type one-dimensional phase grating, a second reflection type convergence system and a photoelectric detection unit, a slit is arranged on the slit mask plate, and the width direction of the slit is perpendicular to the directions of lines of the reflection type one-dimensional phase grating. The device for detecting the aflatoxin by the aid of the ultraviolet fluorescence spectra in the online manner has the advantages that the aflatoxin AFB1, AFB2, AFG1 and AFG2 can be simultaneously detected by means of detecting the ultraviolet fluorescence spectra, and the problems of complicated structures and high cost of combinations of multiple groups of light filters and multiple groups of detectors for detecting aflatoxin as reported in public can be solved.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to an on-line detection device for aflatoxin using ultraviolet fluorescence spectrum. Background technique [0002] Aflatoxin (AF) is a fungal toxic metabolite produced by Aspergillus flavus and Aspergillus parasiticus, and it is also the most toxic type of mycotoxin found so far. There are five types of aflatoxins, AFB1, AFB2, AFG1, AFG2, and AFM1. Among them, AFB1 is the most toxic, its toxicity is 10 times that of potassium cyanide, 68 times that of arsenic, and 416 times that of melamine. Moreover, the carcinogenic ability of AFB1 is 75 times that of dimethylnitroamine. In 1993, the International Agency for Research on Cancer (IARC) listed it as a class I carcinogen, and the other 4 classes were listed as class II. carcinogen. Aflatoxin is not only highly toxic and low in content, but also has a wide range of pollution. Aflatoxin contamination has been f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/64G01N21/643G01N2021/6421
Inventor 汪海颜天信汪洪波张金宇陈明星
Owner CHINA HEFEI TAIHE OPTOELECTRONICS TECH
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