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Method for identifying drainage oil

An identification method and technology for waste oil, which are used in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of low sensitivity, weak specificity, and inability to effectively and accurately identify waste oil, etc., and achieve fast and accurate identification. Identify and analyze fast effects

Inactive Publication Date: 2012-08-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection method of above-mentioned existing waste oil all is to find by marker, has the deficiency that specificity is not strong or sensitivity is low, and the source of waste oil is different in addition, there is very big difference in composition, so above-mentioned existing waste oil None of the oil detection methods can effectively and accurately identify waste oil

Method used

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  • Method for identifying drainage oil
  • Method for identifying drainage oil
  • Method for identifying drainage oil

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The instruments used in the chemical ionization mass spectrometry analysis of the oil sample in this example include: DAPCI ion source developed by East China University of Technology, LTQ2XL enhanced linear ion trap mass spectrometer from Finnigan Company in the United States, and a data system equipped with Xcalibur; the reagents used are: Chromatographic pure methanol; the oil samples selected in the first step below include: Arowana rapeseed oil, Arowana soybean oil, Arowana peanut oil, Arowana blended oil, Arowana corn oil, Arowana sesame oil, Arowana sesame oil, Arowana sesame oil purchased from supermarkets Sunflower oil, Fulinmen blended oil, Fulinmen corn oil, Jintuotian camellia oil, Luhua sesame oil, Olivia olive oil and Shangrao camellia oil, a total of 13 edible oil samples; waste oil provided by Beijing industry and commerce department 1 No. 2, No. 3 waste oil, No. 3 waste oil, No. 4 waste oil, No. 5 waste oil, No. 6 waste oil, No. 7 waste oil, No. 8 waste ...

Embodiment 2

[0051] In this embodiment, the instrument used for the chemical ionization mass spectrometry analysis of the oil sample is the same as that in Embodiment 1. The reagents used are the same as in Example 1. The oil samples selected in the first step below include: Arowana rapeseed oil, Arowana soybean oil, Arowana peanut oil, Arowana blend oil, Arowana corn oil, Arowana sesame oil, Fulinmen sunflower oil, Fulinmen Blended Oil, Fulinmen Corn Oil, Jintuotian Camellia Seed Oil, Luhua Sesame Oil, Olivieran Olive Oil, a total of 12 kinds of edible oil samples; waste oil No. 1, waste oil No. 2, waste water provided by the Beijing Industrial and Commercial Department Oil No. 3, Waste Oil No. 4, Waste Oil No. 5, Waste Oil No. 6, Waste Oil No. 7, Waste Oil No. 8, Waste Oil No. 9, Waste Oil No. 10, Waste Oil No. 11, Waste Oil No. 12, Waste Oil No. 13 waste oil, No. 14 waste oil, No. 15 waste oil, No. 16 waste oil, No. 17 waste oil, No. 18 waste oil, No. 19 waste oil and No. 20 waste oil,...

Embodiment 3

[0071] In this embodiment, the instrument used for the chemical ionization mass spectrometry analysis of the oil sample is the same as that in Embodiment 1. The reagents used are the same as in Example 1. The oil samples selected in the first step below include: Arowana soybean oil, Arowana rapeseed oil, Arowana peanut oil, Arowana corn oil, Arowana sesame oil, Arowana blend oil, Fulinmen sunflower oil, Fulinmen Corn Oil, Fulinmen Blended Oil, Jintuotian Rapeseed Oil, Luhua Sesame Oil and Olivia Olive Oil, a total of 12 kinds of edible oil samples; waste oil samples that are identified as waste oil samples include : Waste oil No. 1, waste oil No. 2, waste oil No. 3, waste oil No. 4, waste oil No. 5, waste oil No. 6, waste oil No. 7, waste oil No. 8, waste oil 9 provided by the Beijing Industrial and Commercial Department No. 10, No. 11, No. 12, No. 13, No. 14, No. 15, No. 16, No. 17, No. 18, No. 19 No. 20 and No. 20 waste oil samples were identified as oil samples; expired F...

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Abstract

The invention provides a method for identifying drainage oil and relates to the identification of edible oil samples by using a special method. The method comprises the following steps of: (1) selecting the edible oil samples and oil samples to be identified, carrying out random sampling and grouping, and directly carrying out mass spectrometric analysis to obtain the mass spectrometric data of all sampled oil samples; (2) dividing the mass spectrometric data of groups of oil samples, obtained in the step (1), into six sections according to 1-100, 101-200, 201-300,301-400,401-500 and 501-600, and respectively computing the local confusion entropy index of each section, wherein the computing formula is of a formula shown in a drawing; and (3) adopting a pattern recognition method to the local confusion entropy indexes obtained in the step (2) so as to identify the drainage oil in the oil samples to be identified in the step (1) and unqualified edible oil samples existing in the edible oil samples. A mass spectrometric section for identifying the drainage oil is determined through comparing the peak-shaped confusion degrees of the mass spectrometric data of qualified edible oil and the drainage oil in different nuclear-cytoplasmic ratio ranges, so that the identification of the drainage oil is realized.

Description

technical field [0001] The technical scheme of the present invention relates to a special method for identifying edible oil samples, specifically a method for identifying waste oil. Background technique [0002] Waste oil is a general term for all kinds of waste and inferior oils. There are three main sources of it: one is the greasy floating matter taken out from the oil-water separation system of the catering industry or the sewers; the other is the rancid old oil after repeated frying; the third is the unqualified edible oil refined from inferior animal fats. Oil sample. Waste oil contains a lot of heavy metals and other substances that are very harmful to the human body, and long-term consumption may cause cancer. [0003] Due to the lack of effective inspection methods for waste oil, it has brought great difficulties to market supervision. In recent years, the frequent occurrence of waste oil poisoning incidents has attracted great attention from consumers and govern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
Inventor 章文军陈焕文甘泉瑛陈琳王新方小伟
Owner HEBEI UNIV OF TECH
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