Fingerprint spectrum building and identification method of high-resolution multi-constituent complicated oil

A fingerprint spectrum and multi-component technology, which is applied in the field of high-discrimination identification to achieve the effect of intuitive and significant differences in fingerprint characteristics, improving accuracy and persuasion, and improving identification accuracy.

Active Publication Date: 2019-08-27
DALIAN MARITIME UNIVERSITY
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AI Technical Summary

Problems solved by technology

The existing method of detecting crude oil with Raman spectroscopy is accurate, convenient and quick

Method used

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  • Fingerprint spectrum building and identification method of high-resolution multi-constituent complicated oil
  • Fingerprint spectrum building and identification method of high-resolution multi-constituent complicated oil
  • Fingerprint spectrum building and identification method of high-resolution multi-constituent complicated oil

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Experimental program
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Embodiment 1

[0045] In this example, 15 crude oil standard samples were used, which were obtained from Sinopec Beijing Petrochemical Research Institute. Crude oil standard samples and blind samples are numbered sequentially from 1-15#, as shown in Table 1.

[0046] Table 1 Number and name of crude oil

[0047] serial number crude oil name 1 Marib 2 Geno 3 Siriya 4 Kohler 5 Southern Border Mix 6 Boni Lightweight 7 Yunnan mix 8 Southern Xinjiang-1 9 Southern Xinjiang-2 10 Kazakhstan 11 Gilasso 12 Oman 13 Bas pull heavy 14 Crowe 15 Karen

[0048] The spectral fingerprint of each oil sample was collected by Horiba JY XploRA microscopic confocal Raman spectrometer, and more than 4 parallel samples were collected. The detection range is 50-3200cm -1 , the attenuation film was set to 0.1%, the aperture and slit were 500 μm and 200 μm respectively, the objective lens was 10×, the temperature...

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Abstract

The invention relates to a fingerprint spectrum building and identification method of high-resolution multi-constituent complicated oil. The method comprises the steps of sampling spectrum, comprisingfluorescent and raman characteristic, from a standard sample and a blind sample; solving two-dimensional synchronous correlated spectrum of each standard sample and blind sample; sampling the two-dimensional synchronous correlated spectrum again under the condition that the main characteristic of fingerprint spectrum is maintained, and then converting the two-dimensional synchronous correlated spectrum to one-dimensional array; removing a variable which is not important to distinguishing by a step-by-step distinguishing method, and only maintaining a variable group with high distinguishing capability; and projecting intensity data corresponding to the preferably-selected variable group to a new low-dimensional space, drawing a columnar stack diagram for intuitive comparison according to projection coordinate in the new low-dimensional space or drawing three-dimensional space projection diagram for fingerprint characteristic comparison. The method is high in identification efficiency and is verified with an existing crude oil identification method, and the accuracy and the persuasion of crude oil identification are improved.

Description

technical field [0001] The invention relates to a high-discrimination identification method based on Raman spectrum, in particular to a fingerprint construction method of multi-component complex oil products, and an oil spill identification method based on the fingerprint. Background technique [0002] In ocean oil transportation and offshore oil and gas development, oil spill accidents occur frequently. Traceability and identification based on the physical and chemical fingerprint information of oil spill samples and suspected oil spill sources can provide reliable scientific basis for accident liability identification and legal rulings, and is also an important prerequisite for timely and effective control measures. [0003] On the basis of many years of on-site law enforcement and reference to foreign technologies, the State Oceanic Administration issued the industry standard (HY 043-1997) of "Sea Oil Spill Identification System Specifications" in 1997, and gas chromatogr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N21/64
CPCG01N21/64G01N21/65
Inventor 于迎涛孙玉叶王季锋
Owner DALIAN MARITIME UNIVERSITY
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