CN112378733B - Kerosene-water separation index and conductivity capability verification sample, preparation method and application - Google Patents
Kerosene-water separation index and conductivity capability verification sample, preparation method and application Download PDFInfo
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- CN112378733B CN112378733B CN202011333202.XA CN202011333202A CN112378733B CN 112378733 B CN112378733 B CN 112378733B CN 202011333202 A CN202011333202 A CN 202011333202A CN 112378733 B CN112378733 B CN 112378733B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
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- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
- G01N2013/0275—Investigating surface tension of liquids involving surface-active agents
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Abstract
The invention is suitable for the field of verification of aviation kerosene detection capability, and provides a verification sample of aviation kerosene water separation index and conductivity capability, a preparation method and application thereof, wherein the verification sample of capability comprises a component A and a component B; the component A is blank aviation kerosene without an antistatic agent; the component B is an aviation kerosene diluent added with an antistatic agent; the concentration of the antistatic agent in the aviation kerosene diluent is 1.0g/L. The invention adopts stable aviation kerosene without antistatic agent as component A, adopts aviation kerosene diluent added with antistatic agent as component B, and has good relative stability because the two components are packaged separately; before detection, the component A and the component B are prepared into a sample for capability verification according to a certain proportion, so that the uniformity and the stability of the sample can be ensured.
Description
Technical Field
The invention belongs to the field of verification of aviation kerosene detection capability, and particularly relates to a sample for verifying aviation kerosene-water separation index and conductivity capability, a preparation method and application thereof.
Background
And the ability verification refers to evaluating the ability of the participants according to a preset criterion by using comparison among laboratories. Generally speaking, an organizer uniformly issues samples with consistent uniformity and stability meeting requirements to a laboratory participating in comparison, participants carry out detection, and then the organizer carries out statistics on results reported by the participants and evaluates the abilities of the participants. The capability verification sample refers to a sample used for capability verification. The capability verification sample is important and is the key to success or failure of capability verification. And the sample can be successfully obtained by ensuring that the uniformity and the stability of the sample meet the requirements. The water separation index is the degree of difficulty in coalescing and separating emulsified water from a fuel under the influence of a surface active substance (surfactant); the higher the water separation index (between 50 and 100), the easier the emulsified water is separated from the aviation kerosene, and the safer the flight is. Conductivity, which refers to the reciprocal of the resistivity of the uncharged fuel in the absence of ionic loss and polarization; a current measurement at an initial instant after applying a dc voltage between the electrodes; static charge can be generated during fuel pumping or filtration operations, and if the conductivity is relatively high, the charge can dissipate quickly, preventing the build up of charge, and avoiding dangerous high potentials at the receiving tank.
The conductivity and water separation index (MSEP) is an important technical indicator of aviation kerosene quality control and transportation and safety in use, and laboratories carrying out tests on conductivity and water separation index (MSEP) items preferably have experience of verifying the ability to participate in the tests on conductivity and water separation index (MSEP) and obtain satisfactory results, if they are approved by the national committee for acceptance of China (CNAS) or the department of aviation administration.
Currently, the above needs are not met by no certified suppliers of aviation kerosene conductivity and water separation index (MSEP) programs available nationwide. The Qingdao Saiko inspection Co., ltd (CNAS PT 0051), a capability verification provider approved by CNAS, provided a capability verification plan for aviation kerosene conductivity and water separation index (MSEP) project since 2021, and only started there was a technical demand for aviation kerosene conductivity and water separation index (MSEP) sample preparation.
GB 6537-2018 jet fuel No. 3 states that the water separation index (MSEP) should be not less than 85 without the addition of an antistatic agent or not less than 70 after the addition of an antistatic agent, and the conductivity should be 50pS/m to 600pS/m. In fact, if the antistatic agent is not added into the produced aviation kerosene, the water separation index of the produced aviation kerosene is close to 100, and the conductivity is close to 0pS/m, so that a certain amount of antistatic agent, generally Stadis450, is added into the aviation kerosene before the aviation kerosene is produced and delivered. Since the antistatic agent changes due to contact with a ferrous container during transportation, light, heat and the like, and the conductivity attenuates and the water separation index (MSEP) changes, a sample with good stability cannot be directly obtained as a capability verification sample. In view of the above, it is difficult to directly obtain a usable capability verification sample, which is suitable for a sample having a conductivity of 300pS/m to 600pS/m and a water separation index (MSEP) of 70 to 90, according to the requirements of capability verification.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an aviation kerosene-water separation index and conductivity capability verification sample, which aims to solve the problems set forth in the background art.
The embodiment of the invention is realized by that a sample for verifying the kerosene-water separation index and the conductivity capability comprises a component A and a component B; the component A is blank aviation kerosene without an antistatic agent; the component B is an aviation kerosene diluent added with an antistatic agent; the concentration of the antistatic agent in the aviation kerosene diluent is 0.5-2 g/L.
As a preferable scheme of the embodiment of the invention, the concentration of the antistatic agent in the aviation kerosene diluent is 1g/L.
As another preferred version of an embodiment of the present invention, the antistatic agent is a Stadis450 antistatic agent.
As another preferable scheme of the embodiment of the invention, the volume ratio of the component A to the component B is 1000 (0.1-2).
As another preferable scheme of the embodiment of the invention, the volume ratio of the component A to the component B is 1000 (0.5-1.5).
As another preferred aspect of the embodiment of the present invention, the blank jet fuel is jet fuel No. 3.
Another object of an embodiment of the present invention is to provide a method for preparing the aviation kerosene-water separation index and conductivity capability verification sample, which includes the following steps:
blank aviation kerosene without an antistatic agent is taken as a component A;
adding an antistatic agent into another blank aviation kerosene to prepare an aviation kerosene diluent with the concentration of the antistatic agent being 1.0g/L as a component B;
and (3) packaging the component B and the component A separately, and adding the component B into the component A for mixing before detection to obtain the kerosene-water separation index and conductivity capability verification sample.
Another object of an embodiment of the present invention is to provide a sample for verifying kerosene-water separation index and conductivity capability prepared by the above preparation method.
As another preferable scheme of the embodiment of the invention, the conductivity of the capacity verification sample is 300pS/m-600pS/m, and the water separation index is 70-90.
Another object of an embodiment of the present invention is to provide an application of the above capability verification sample in verification of aviation kerosene-water separation index and/or conductivity capability.
According to the aviation kerosene-water separation index and conductivity capability verification sample provided by the embodiment of the invention, stable aviation kerosene without an antistatic agent is adopted as the component A, an aviation kerosene diluent with the antistatic agent is adopted as the component B, the two components are packaged independently, and the relative stability is good; before detection, the component A and the component B are prepared into a capability verification sample according to a certain proportion. The method can prepare the aviation kerosene sample with the conductivity of 300pS/m-600pS/m and the water separation index (MSEP) of 70-90 as required, and also ensures the uniformity and the stability of the sample.
In summary, compared with the prior art, the invention has the following advantages:
1. the method can be realized by using an electronic balance, a pipettor and the like in a common laboratory without special equipment;
2. the capability verification samples with different conductivity and water separation indexes (MSEP) can be prepared by changing the addition amount of the component B according to requirements;
3. the uniformity and the stability of the prepared capability verification sample can meet the requirement of capability verification.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a kerosene-water separation index and conductivity capability verification sample, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron bucket, respectively washing with absolute ethyl alcohol and petroleum ether, airing, and reserving for later use, wherein attention is paid to prevent metal scraps such as iron, copper and the like from being polluted in the period.
2. Blank aviation kerosene can select the refinery to produce and not add the jet fuel of No. 3 of antistatic agent, and the sample connection of holding vessel is sampled, once only obtains enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the mixture into 1 liter brown glass bottles in a manner of weighing by an electronic balance, and tightly covering the bottles; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing 1.0g/L Stadis450 aviation kerosene diluent, subpackaging the mixture into 2 ml brown glass bottles in a mode of precise pipettor volume, and tightly covering the bottles; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when the composition is used, 1.0mL of the component B is poured into an original bottle containing 1000mL of the component A, after the composition is shaken for 5 minutes manually, a capacity verification sample is obtained, and a water separation index (MSEP) and conductivity test is immediately carried out.
The conductivity of the capacity-testing sample obtained in this example was 300pS/m to 600pS/m, and the water separation index (MSEP) was 70 to 90.
Example 2
The embodiment provides a sample for verifying kerosene-water separation index and conductivity capability, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron bucket, respectively washing with absolute ethyl alcohol and petroleum ether, airing, and reserving for later use, wherein attention is paid to prevent metal scraps such as iron, copper and the like from being polluted in the period.
2. Blank aviation kerosene can select the refinery and produce No. 3 jet fuel that does not add the antistatic agent, and the sample of holding vessel sample connection once only acquires enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing 1.0g/L Stadis450 aviation kerosene diluent, subpackaging the mixture into 2 ml brown glass bottles in a mode of precise pipettor volume, and tightly covering the bottles; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when the composition is used, 1.5mL of the component B is poured into an original bottle containing 1000mL of the component A, after the composition is shaken for 5 minutes manually, a capacity verification sample is obtained, and a water separation index (MSEP) and conductivity test is immediately carried out.
Example 3
The embodiment provides a sample for verifying kerosene-water separation index and conductivity capability, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron barrel, respectively cleaning with absolute ethyl alcohol and petroleum ether, airing, and keeping for later use, wherein metal scraps such as iron, copper and the like are prevented from being polluted in the period.
2. Blank aviation kerosene can select the refinery to produce and not add the jet fuel of No. 3 of antistatic agent, and the sample connection of holding vessel is sampled, once only obtains enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing 1.0g/L Stadis450 aviation kerosene diluent, subpackaging the mixture into 2 ml brown glass bottles in a mode of precise pipettor volume, and tightly covering the bottles; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when in use, pouring 0.5mL of the component B into an original bottle containing 1000mL of the component A, manually shaking for 5 minutes to obtain a capacity verification sample, and immediately performing a water separation index (MSEP) and conductivity test.
Example 4
The embodiment provides a sample for verifying kerosene-water separation index and conductivity capability, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron barrel, respectively cleaning with absolute ethyl alcohol and petroleum ether, airing, and keeping for later use, wherein metal scraps such as iron, copper and the like are prevented from being polluted in the period.
2. Blank aviation kerosene can select the refinery to produce and not add the jet fuel of No. 3 of antistatic agent, and the sample connection of holding vessel is sampled, once only obtains enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing a 2.0g/L Stadis450 aviation kerosene diluent, subpackaging the mixture into 2 ml brown glass bottles in a mode of precise pipettor volume, and tightly covering the bottles; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when in use, pouring 0.5mL of the component B into an original bottle containing 1000mL of the component A, manually shaking for 5 minutes to obtain a capacity verification sample, and immediately performing a water separation index (MSEP) and conductivity test.
Example 5
The embodiment provides a sample for verifying kerosene-water separation index and conductivity capability, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron barrel, respectively cleaning with absolute ethyl alcohol and petroleum ether, airing, and keeping for later use, wherein metal scraps such as iron, copper and the like are prevented from being polluted in the period.
2. Blank aviation kerosene can select the refinery and produce No. 3 jet fuel that does not add the antistatic agent, and the sample of holding vessel sample connection once only acquires enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding Stadis450 antistatic agent into another blank aviation kerosene, preparing 2.0g/L Stadis450 aviation kerosene diluent, subpackaging into 2 ml brown glass bottles by adopting a mode of precise pipettor volume, and tightly covering; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when the composition is used, 1mL of the component B is poured into an original bottle containing 1000mL of the component A, after the composition is shaken for 5 minutes manually, a capacity verification sample is obtained, and a water separation index (MSEP) and a conductivity test are immediately carried out.
Example 6
The embodiment provides a sample for verifying kerosene-water separation index and conductivity capability, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron bucket, respectively washing with absolute ethyl alcohol and petroleum ether, airing, and reserving for later use, wherein attention is paid to prevent metal scraps such as iron, copper and the like from being polluted in the period.
2. Blank aviation kerosene can select the refinery to produce and not add the jet fuel of No. 3 of antistatic agent, and the sample connection of holding vessel is sampled, once only obtains enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing 0.5g/L Stadis450 aviation kerosene diluent, subpackaging 2 ml of brown glass bottles by adopting a mode of precise pipettor volume, and tightly covering; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
S4, when in use, 1.0mL of the component B is poured into an original bottle containing 1000mL of the component A, after shaking manually for 5 minutes, a capacity verification sample is obtained, and a water separation index (MSEP) and conductivity test is immediately carried out.
Example 7
The embodiment provides a kerosene-water separation index and conductivity capability verification sample, and the preparation method comprises the following steps:
s1, selecting and preparing blank aviation kerosene samples:
1. selecting and cleaning a blank aviation kerosene sampling barrel: selecting a commercial 30-liter iron barrel, respectively cleaning with absolute ethyl alcohol and petroleum ether, airing, and keeping for later use, wherein metal scraps such as iron, copper and the like are prevented from being polluted in the period.
2. Blank aviation kerosene can select the refinery to produce and not add the jet fuel of No. 3 of antistatic agent, and the sample connection of holding vessel is sampled, once only obtains enough samples, detects through the laboratory, verifies whether meet the requirements.
S2, manually stirring and homogenizing the blank aviation kerosene sample in a stainless steel sample mixing barrel for about 15 minutes, standing for about 5 minutes, subpackaging the blank aviation kerosene sample in a 1-liter brown glass bottle in a weighing mode by an electronic balance, and tightly covering the bottle; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component A; the prepared component A should be protected from light and stored at normal temperature.
S3, adding a Stadis450 antistatic agent into another blank aviation kerosene, preparing 0.5g/L Stadis450 aviation kerosene diluent, subpackaging 2 ml of brown glass bottles by adopting a mode of precise pipettor volume, and tightly covering; recording the sample amount of each bottle, numbering according to the subpackaging sequence, and marking as a component B; the prepared component B should be protected from light and stored at normal temperature.
And S4, when the composition is used, 2.0mL of the component B is poured into an original bottle containing 1000mL of the component A, after the composition is shaken for 5 minutes manually, a capacity verification sample is obtained, and a water separation index (MSEP) and conductivity test is immediately carried out.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. The preparation method of the aviation kerosene-water separation index and conductivity capability verification sample is characterized by comprising the following steps of:
blank aviation kerosene without an antistatic agent is taken as a component A;
adding an antistatic agent into another blank aviation kerosene to prepare an aviation kerosene diluent with the concentration of the antistatic agent being 1.0g/L as a component B;
the component B and the component A are packaged separately, and the component B is added into the component A for mixing before detection, so that an aviation kerosene-water separation index and conductivity capability verification sample is obtained;
the antistatic agent is a Stadis450 antistatic agent;
the volume ratio of the component A to the component B is 1000 (0.5-1.5);
the blank aviation kerosene is No. 3 jet fuel;
the conductivity of the capacity verification sample prepared by the preparation method is 300pS/m-600pS/m, and the water separation index is 70-90.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983493A (en) * | 2014-05-30 | 2014-08-13 | 中华人民共和国山东出入境检验检疫局 | Preparation device of liquid petroleum and petroleum product capacity testing sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983493A (en) * | 2014-05-30 | 2014-08-13 | 中华人民共和国山东出入境检验检疫局 | Preparation device of liquid petroleum and petroleum product capacity testing sample |
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| 3号喷气燃料仪器选型及检验质量控制关键点分析;马春阳等;《石化技术》;20171031(第10期);第42-44页 * |
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