Portable type rapid detection device and method for pollution of fruits and vegetables
A portable, fruit and vegetable technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of long detection time, difficult to ensure safety indicators, etc., and achieve the effects of rapid judgment, fast testing and low cost
Inactive Publication Date: 2014-12-17
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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[0002] Under the current situation of fruit and vegetable production where improper discharge of livestock and poultry manure leads to soil heavy metal pollution and excessive use of pesticides, it is difficult to ensure the safety indicators of heavy metal residues and pesticide residues in fruits and vegetables
Government departments at all levels are working hard for the safety of the people's "vegetable baskets", but the existing detection technology requires a long detection time, so that during the official detection period, the problem fruits and vegetables are still circulating in the market
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[0025] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] In this embodiment, after the fruits and vegetables are sampled and processed, the spectral bands corresponding to the pollutants are extracted to irradiate the samples, and then the diffuse reflection spectral signals of the samples are detected by the detector, the spectral signals are processed, and the comprehensive pollution index is calculated, which can quickly and accurately give User provides reference information.
[0027] see figure 1 , the portable fruit and vegetable pollution rapid detection method proposed in this embodiment is specifically described as follows:
[0028] S1. The collection area of a certain part of the fruit and vegetable to be tested is 1cm 2 For samples of different sizes, the thickness of the sample can be adjusted according to the actual situation. For example, when collecting the peel, the thickn...
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The invention relates to a portable type rapid detection device and a method for the pollution of fruits and vegetables. The method comprises the following steps: drying and grinding a collected test sample, and mixing the ground test sample with KBr powder and shaking uniformly; picking powder by emery paper and irradiating the powder by a spectral waveband corresponding to a pollutant; collecting an infrared diffuse reflection spectrum signal generated by the test sample and processing the spectrum signal to obtain the content of the pollutant; and judging the pollution degree of the fruits and the vegetables. By adopting the portable type rapid detection device and the method, heavy metal and pesticide residue pollution degrees of the fruits and the vegetables can be determined in time; and the portable type rapid detection device is low in cost, rapid in testing and convenient to carry and can rapidly judge the pollution of the fruits and the vegetables, so that the device is a food safety rapid monitoring tool necessary for the masses and the market requirements are great.
Description
technical field [0001] The invention belongs to the technical field of food safety monitoring, and in particular relates to a portable method and device for rapid detection of fruit and vegetable pollution. Background technique [0002] Under the current situation of fruit and vegetable production where improper discharge of livestock and poultry manure leads to soil heavy metal pollution and excessive use of pesticides, it is difficult to guarantee the safety indicators of heavy metal residues and pesticide residues in fruits and vegetables. Government departments at all levels are working hard for the safety of the people's "vegetable baskets", but the existing detection technology requires a long detection time, so that during the official detection period, problematic fruits and vegetables are still circulating in the market. Therefore, the general public urgently needs a high-quality and cheap quick inspection tool, which can detect fruit and vegetable pollution immedia...
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IPC IPC(8): G01N21/25
Inventor 范萍萍褚东志吴宁吴炳伟张述伟郭翠莲张颖程岩马然石小梅王茜刘东彦孔祥峰刘岩尤小华高杨张颖颖曹煊曹璐张婷王昭玉吕婧邹妍张国华
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI