Multi-dimensional chemical fingerprint and method for identifying offshore weathered crude and bunker fuel oil

A chemical fingerprint and fuel oil technology, applied in the direction of material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems that the main characteristics of oil products cannot be expressed, and the composition of crude oil and its refined oil is complex, so as to improve the singleness and limitations Effect

Inactive Publication Date: 2015-02-25
DALIAN MARITIME UNIVERSITY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] At present, the cognition of oil fingerprints at home and abroad is mostly focused on the chromatographic characterization of hydrocarbons, but the composition of crude oil and its refined oil is very complex, and the main characteristics of oil products cannot be expressed only by chromatographic analysis methods

Method used

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  • Multi-dimensional chemical fingerprint and method for identifying offshore weathered crude and bunker fuel oil
  • Multi-dimensional chemical fingerprint and method for identifying offshore weathered crude and bunker fuel oil
  • Multi-dimensional chemical fingerprint and method for identifying offshore weathered crude and bunker fuel oil

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Embodiment 1

[0074] The method of the invention is used to identify weathered crude oil and weathered fuel oil. The samples are two kinds of weathered oils, one group is crude oil weathered 0~90d, and the other group is bunker fuel oil weathered 0~90d.

[0075] A method for distinguishing crude oil weathered at sea and bunker fuel oil, comprising the steps of:

[0076] I. Obtain the distribution of the n-paraffins of the sample to be tested, such as Figure 5 As shown in (a) and (b), the dominant hydrocarbons of n-alkanes in weathered crude oil are concentrated in n-C 15 ~n-C 27 Between, weathered fuel oil is in n-C 20 ~n-C 28 , that is, the light component dominant hydrocarbons of crude oil are more abundant than bunker fuel oil;

[0077] II. Obtain the fluorescence intensity of the sample to be tested at 332~333nm and 384nm, and calculate the I of weathered crude oil 332nm / I 384nm and Weathered Fuel Oil I 333nm / I 384nm the value of Figure 6 (a) and (b), where the weathered ...

Embodiment 2

[0081] The method of the invention is used to identify weathered crude oil and weathered fuel oil. The samples are two unknown weathered oil samples A and B.

[0082] I. Obtain the distribution of n-alkanes in the sample to be tested. The distribution of n-alkanes dominant hydrocarbons of the two oil samples is similar to that of crude oil after long-term weathering. A is n-C 16~n-C 27 , B is n-C 17 ~n-C 28 , Figure 8 (a) and (b) shown.

[0083] II. Obtain the fluorescence intensity of the sample to be tested at 332nm and 384nm, and calculate the I 332nm / I 384nm The value of , among them, the I of oil sample A 332nm / I 384nm =1.8; I of oil sample B 332nm / I 384nm =1.2, such as Figure 9 (a) and (b) shown.

[0084] III. The Ni / V values ​​of the samples to be tested were obtained, the Ni / V of the oil sample A was 21.6, and the Ni / V of the oil sample B was 0.5.

[0085] IV: Obtaining δ of weathered crude oil and bunker fuel oil 13 C distribution, judging its hom...

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Abstract

The invention relates to a multi-dimensional chemical fingerprint and a method for identifying offshore weathered crude and bunker fuel oil by using the fingerprint, belonging to the field of marine environmental pollution detection and control. According to the method, based on the characteristics that both the crude and the fuel oil for ships are rich in n-alkanes, polycyclic aromatic hydrocarbon and trace metals such as nickel and vanadium, a chemical oil fingerprint for identifying the crude and the bunker fuel oil is formed by using four characteristic parameters of indexes including n-alkanes, fluorescence characteristic, Ni / V and stable isotope ratio delta13C, and is substantially different from the conventional chromatographic fingerprints. By utilizing the fingerprint and the method, not only are the unicity and the limitation of the conventional oil fingerprint improved, but also the characteristics of oil products are reflected more comprehensively, so that more scientific technical supports for tracing the oil source, checking the accident cause, evaluating pollution damage and the like are provided.

Description

technical field [0001] The invention relates to a multi-dimensional chemical fingerprint for identifying weathered crude oil and marine fuel oil and a method for identifying weathered crude oil and marine fuel oil by using the fingerprint, belonging to the field of detection and control of marine environmental pollution. Background technique [0002] Oil pollution to the sea has become a worldwide serious problem. Hull collision, mechanical equipment aging, inadvertent mining, waste oil discharge, etc. will cause various crude oil and crude oil products to enter the ocean, causing varying degrees of harm to the natural environment, aquaculture, shallow water shoreline, dock industry, etc., threatening the safety of animals and plants. Survival, affecting offshore production operations, and even causing a public food safety crisis. In solving the problem of oil spill accidents, the identification of oil is an important link. It not only helps to trace the source of oil spill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
Inventor 刘晓星
Owner DALIAN MARITIME UNIVERSITY
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