Single-element standard oil and preparation method thereof

A standard oil, single element technology, applied in the field of stoichiometry, can solve the problems affecting the use performance of standard substances, insufficient system stability, unknown composition, etc., and achieve the effects of strong designability, good storage stability and uniform system.

Active Publication Date: 2015-12-23
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The commercially available single-element standard oil is an oily system with unknown composition and insufficient system stability. After 6 months of storage at room temperature, the element content changes by more than 10%, and there will be obvious flocculent precipitation, which will affect the performance of the standard substance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Prepare 100 g of a single-element standard oil with a barium element content of 1000 μg / g.

[0016] Analytical pure barium cyclohexanebutyrate was dried with phosphorus pentoxide for 48 hours; 0.347g barium cyclohexanebutyrate (purity 99.9%), 3g xylene and 6g 2-ethylhexanoic acid were heated and shaken at 70°C to obtain Transparent solution; add 71.7g (accounting for 80% of the base oil amount) of polyalphaolefin base oil with a kinematic viscosity of 8cSt at 100°C while it is hot, and mix well; naturally cool to room temperature, and add the remaining polyalphaolefin base oil to the total Weigh 100g, mix evenly to obtain a single element standard oil with a barium element content of 1000 μg / g.

[0017] The standard oil is stored at room temperature for 18 months, the element content is 991 μg / g, the change is not more than 1%, and there is no flocculation and precipitation.

Embodiment 2

[0019] Prepare 1000g of single-element standard oil with a magnesium element content of 1μg / g:

[0020] Heat and shake 0.015g magnesium cyclohexanebutyrate (purity 99.5%), 10g xylene and 15g 2-ethylhexanoic acid at 60°C until a transparent solution is obtained; add 790.5g (accounting for 85% of the base oil) while hot 100°C polyalphaolefin base oil with a kinematic viscosity of 10cSt, and shake evenly; naturally cool to room temperature, add the remaining base oil to a total weight of 1000g; fully shake evenly, and obtain a single element with a magnesium content in the oil of 1μg / g standard oil.

[0021] This lubricating oil is stored at room temperature for 12 months, the element content is 0.974μg / g, the change does not exceed 3%, and it is uniform, pure and free of impurities.

Embodiment 3

[0023] Prepare 100g of single-element standard oil with manganese element content of 10000μg / g:

[0024] Heat and shake 7.204g cyclohexane manganese butyrate (analytically pure, 99.4%), 5g xylene and 7g 2-ethylhexanoic acid at 80°C until a transparent solution is obtained; add 70g while hot (accounting for 90% of the amount of base oil) The 100 ℃ polyalphaolefin base oil with a kinematic viscosity of 2cSt was shaken evenly; naturally cooled to room temperature, and the remaining base oil was added to a total weight of 100g; fully shaken evenly, and the manganese content in the oil was 10000μg / g. Elemental standard oils.

[0025] This lubricating oil is stored at room temperature for 12 months, the element content is 9712μg / g, the change does not exceed 3%, and it is uniform, pure and free of impurities.

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Abstract

The present invention belongs to the technical field of chemical metering. Poly-alpha-olefin as a base oil carrier, cyclohexane butyric acid metal compound as a metal element additive, and a suitable supplemented co-solvent are subjected to mixing and dissolving, so as to obtain the single-element standard oil. The single-element standard oil provided by the present invention comprises poly-alpha-olefin base oil with kinematic viscosity at 100 DEG C of 2-10cSt, a co-solvent and a cyclohexane butyric acid metal compound with metal element content of between 1-10000 mug / g. The single-element standard oil has strong designability, system uniformity, and good storage stability; and the preparation method is simple and easy to control. The single-element standard oil is applicable to determination of barium, magnesium, manganese, lead and zinc content, especially applicable to establishment of standard curve by inductively coupled plasma atomic emission spectrometry (ICP-AES) and rotating disk electrode spectrum for content determination of barium, magnesium, manganese, lead and zinc in lubricating oil.

Description

technical field [0001] The invention belongs to the technical field of stoichiometry, and relates to the preparation technology of standard substances, in particular to the preparation technology of single-element standard oil. Background technique [0002] Lubricating oil is an important petroleum product, which is widely used in many fields such as vehicles, ships, aerospace, and machinery manufacturing. The wear and tear of various equipment and the loss of additives in lubricating oil will cause changes in the content of elements in lubricating oil. Therefore, the content of elements in lubricating oil is usually one of the important indicators indicating the quality and performance of oil products. Therefore, the accurate determination of elements in lubricating oil content is of great significance. [0003] At present, there are mainly four methods for the determination of element content in lubricating oil: inductively coupled plasma emission spectrometry (ICP-AES), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 鲁毅吴立军柳洪超郭国建毛如增王爱萍龚维
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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