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Hogwash oil identifying method based on volatile matter

A stagnant oil and volatile technology, applied in the field of stagnant oil identification based on volatile group, can solve the problems of complicated operation, high price, huge equipment, etc. Effect

Inactive Publication Date: 2012-10-10
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment required for instrument detection is huge, expensive, and cumbersome to operate, so it is not suitable for popularization and use.

Method used

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  • Hogwash oil identifying method based on volatile matter
  • Hogwash oil identifying method based on volatile matter
  • Hogwash oil identifying method based on volatile matter

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with drawings and embodiments.

[0035] The principle of the present invention is: studies have shown that oils are rich in volatile components, if the quality of the oil changes, the volatile components will change significantly, such as producing acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, etc. One, two or more of acids, etc.; the electrical parameters of the molecular wire film will change when it adsorbs volatile groups, and the piezoelectric quartz crystal sensor has a frequency sensitive to the electrical parameter changes of the objects connected in series change, see formula (1):

[0036] ΔF = π F 0 2 C q ( 4 π ...

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Abstract

The invention discloses a hogwash oil identifying method based on volatile matter. The method comprises the following steps of (1) designing a molecular wire array probe; (2) constructing a molecular wire piezoelectric sensor device; (3) analyzing a known sample; (4) extracting feature identifying information; and (5) identifying a sample to be tested: achieving fast identification of hogwash oil by comparing an output feature value with a feature value of the known sample. The hogwash oil identifying method based on the volatile matter has the advantages of being high in sensitivity, fast in detection, convenient to operate, low in cost and the like, and can provide a reliable basis for the law-enforcing department and inspection bodies to perform sampling inspection on quality of oil products.

Description

technical field [0001] The invention relates to a method for identifying hogwash oil, in particular to a method for identifying hogwash oil based on volatile groups. Background technique [0002] Hogwash oil (gutter oil in a narrow sense) is the oil that flows into the ditch after washing dishes, dishes, leftovers, etc. in the catering industry, is fished in the grease trap, and is separated from slag and water, heated and dehydrated, decolorized and refined. Because hogwash oil is similar in appearance to ordinary edible oil and difficult to distinguish, some lawbreakers have been driven by high profits in recent years to extract a large amount of hogwash oil and sell it to the market at low prices. Since the hogwater is mixed with sewage, garbage, detergent, and rancid food, the hogwash oil after processing and refining contains a large amount of carcinogens such as bacterial toxins, lipid peroxides, benzopyrene, alkanes, and aflatoxins, and Heavy metal ions, the hydroxyl...

Claims

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Application Information

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IPC IPC(8): G01N27/00
Inventor 任佳丽张慧付湘晋李忠海林亲录钟海雁
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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