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Method for measuring low-concentration methylcyclopentadienyl manganese tricarbonyl by gas chromatography internal standard method

A kind of methylcyclopentadiene manganese tricarbonyl, gas chromatography technology, applied in the preparation of test samples, measuring devices, instruments and other directions, can solve the problem of no unified inspection method, etc., to achieve low analysis and test cost and fast method. Effect

Inactive Publication Date: 2009-11-18
江西昌宁化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The content of MMT in the gasoline antiknock agent on the market is various at present, for the detection method that the content of MMT is higher than 96%, because of its high content, gas chromatography can directly detect their content under certain conditions, and the accuracy is high. And for the gasoline antiknock agent of most low concentrations (less than 80%) MMT, there is no unified comparatively accurate test method

Method used

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  • Method for measuring low-concentration methylcyclopentadienyl manganese tricarbonyl by gas chromatography internal standard method
  • Method for measuring low-concentration methylcyclopentadienyl manganese tricarbonyl by gas chromatography internal standard method
  • Method for measuring low-concentration methylcyclopentadienyl manganese tricarbonyl by gas chromatography internal standard method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Determination of the content of 62% industrial grade methylcyclopentadiene manganese tricarbonyl

[0023] Use 99% ferrocene as the internal standard substance to dissolve in xylene to prepare 100ml of internal standard solution with a concentration of 0.1g / 10ml;

[0024] Weigh 0.1518g (accurate to 0.0001g) of methylcyclopentadiene manganese tricarbonyl with a content of 99.5% and dissolve it in 10ml of ferrocene internal standard solution with a concentration of 0.1g / 10ml to prepare a standard solution;

[0025] Weigh 0.3064g (accurate to 0.0001g) of the methylcyclopentadiene manganese tricarbonyl product and dissolve it in 10ml of ferrocene internal standard solution with a concentration of 0.1g / 10ml to prepare the sample to be tested;

[0026] Use SP-2100 type gas chromatograph SE-30 type chromatographic column, under the specified temperature conditions: injector 250 ° C, detector 250 ° C, column temperature from 80 ° C to 200 ° C under program temperature ...

Embodiment 2

[0029] Example 2 Determination of the content of 80% industrial grade methylcyclopentadiene manganese tricarbonyl

[0030] Use 99% ferrocene as the internal standard substance to dissolve in xylene to prepare 100ml of internal standard solution with a concentration of 0.1g / 10ml;

[0031] Weigh 0.1553 g (accurate to 0.0001 g) of 99.5% methylcyclopentadiene manganese tricarbonyl and dissolve it in 10 ml of ferrocene internal standard solution with a concentration of 0.1 g / 10 ml to prepare a standard solution.

[0032] Accurately weigh 0.2113g (accurate to 0.0001g) of the methylcyclopentadiene manganese tricarbonyl product and dissolve it in 10ml of ferrocene internal standard solution with a concentration of 0.1g / 10ml to prepare the sample to be tested.

[0033] Use SP-2100 type gas chromatograph SE-30 type chromatographic column, under the specified temperature conditions: injector 250 ° C, detector 250 ° C, column temperature from 80 ° C to 200 ° C under program temperature in...

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Abstract

The invention relates to a method for measuring a low-concentration methylcyclopentadienyl manganese tricarbonyl by a gas chromatography internal standard method, comprising the following specific measurement processes of: selecting a high-purity methylcyclopentadienyl manganese tricarbonyl (MMT) standard substance and the internal standard substance of a high-purity ferrocene; dissolving the high-purity ferrocene in a refined organic solvent to prepare an internal standard liquid; dissolving the high-purity MMT standard substance in the internal standard liquid to prepare a standard solution; dissolving an industrial-grade MMT in the internal standard liquid to prepare a liquid to be measured; and analyzing the standard solution and the liquid to be measured under the same gas chromatography condition. The method is quick, convenient and exact, the analysis testing has low cost, the result measured by the method is equivalent to the result measured by an atomic absorption spectrometry when being converted into manganese content by calculation, and the method can meet the requirements of scientific research and industrial production.

Description

technical field [0001] The invention relates to a method for measuring low-concentration methylcyclopentadiene manganese tricarbonyl by a gas chromatography internal standard method. Background technique [0002] Methylcyclopentadiene manganese tricarbonyl (MMT) gasoline antiknock agent is an economical additive that can significantly increase gasoline octane number and reduce automobile pollution. The content of MMT in the gasoline antiknock agent on the market is various at present, for the detection method that the content of MMT is higher than 96%, because of its high content, gas chromatography can directly detect their content under certain conditions, and the accuracy is high. And for most low-concentration (below 80%) gasoline antiknock agents of MMT, there is no unified comparatively accurate test method. [0003] The internal standard method is an indirect or relative calibration method. When analyzing and determining the content of a certain component in the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N1/28
Inventor 胡计华胡幼元曾钦航徐菊花
Owner 江西昌宁化工有限责任公司
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