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Application of Dibromohexafluoropropane in Infrared Oil Measuring Instrument

A dibromohexafluoropropane and infrared technology, applied in the preparation of test samples, instruments, measuring devices, etc., can solve the problems of unstable chemical properties and affecting the accuracy of detection, and achieve low toxicity, high extraction rate, The effect of chemical stability

Active Publication Date: 2017-04-05
ZHEJIANG HUANXIN FLUORO MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention overcomes the defect that carbon disulfide is used as an extraction agent in the infrared oil measuring instrument in the prior art, and its chemical properties are unstable, thereby causing defects that affect the accuracy of detection, as well as failing to solve the problem of using an extraction agent that complies with the "Montreal Protocol" problem, providing a new extractant for the application of infrared oil measuring instrument

Method used

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  • Application of Dibromohexafluoropropane in Infrared Oil Measuring Instrument
  • Application of Dibromohexafluoropropane in Infrared Oil Measuring Instrument
  • Application of Dibromohexafluoropropane in Infrared Oil Measuring Instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Determination of Surface Water, Domestic Sewage and Industrial Wastewater

[0022] 1. The method is based on: the new standard of the Ministry of Environmental Protection "HJ637-2012 Determination of Water Quality Petroleum and Animal and Vegetable Oils - Infrared Spectrophotometric Method"

[0023] 2. Instruments and equipment: OIL460 infrared spectroscopic oil meter

[0024] 3. Test principle: The same sample is extracted with carbon tetrachloride (the extraction agent specified in the HJ637-2012 standard) and dibromohexafluoropropane, and then tested. The applicability of dibromohexafluoropropane was determined by comparing the extraction results of the two extractants.

[0025] 4. Test steps: Test the water samples from 5 different locations, first use carbon tetrachloride for extraction and analysis, and the results of carbon tetrachloride extraction and analysis shall prevail. Then use dibromohexafluoropropane as the extractant to carry out the same te...

Embodiment 2

[0031] Example 2 Test of oil content in copper pipe

[0032] 1. Test method: use dibromohexafluoropropane as a solvent, accurately weigh a certain amount of pure copper tube oil and dissolve it to make a copper tube oil sample of known concentration, and then test it.

[0033] 2. Instruments and equipment: OIL460 infrared spectroscopic oil meter.

[0034] 3. Test results:

[0035] Table 3 Copper tube oil samples (unit mg / L)

[0036]

Embodiment 3

[0038] The dibromohexafluoropropane is 1,2-dibromohexafluoropropane or 2,2-dibromohexafluoropropane or 1,3-dibromohexafluoropropane or 1,1-dibromohexafluoropropane Any one, or any two mixtures, or any three mixtures, or any four mixtures. The mixing ratio of any two kinds of mixtures, or any three kinds, or four kinds of mixtures is in any range of 0-100.

[0039] The dibromohexafluoropropane can also be compounded with other compatible extractants, and the compounding ratio of the dibromohexafluoropropane and other compatible extractants is in any range of 0-100. Compatible extractants such as S316, trifluorotrichloroethane and other CFC reagents that meet environmental protection requirements.

[0040] The remaining test methods are the same as in Example 1-2, and the results obtained are the same as in Example 1-2.

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Abstract

The invention relates to application of dibromohexafluoropropane in an infrared oil content analyzer. In the process of measuring the oil content in a water sample by the infrared oil content analyzer, dibromohexafluoropropane serves as an extraction agent to extract an oil component in a to-be-detected sample and then the content of the oil component in the to-be-detected sample is detected by using the infrared oil content analyzer. A detection test verifies that dibromohexafluoropropane as the extraction agent in the infrared oil content analyzer is stable in chemical property, high in extraction rate, convenient to use, low in toxicity and free of interference on a targeted subject matter.

Description

technical field [0001] The invention relates to the application field of fluorine-containing compounds, in particular to the application of dibromohexafluoropropane in infrared oil measuring instruments. Background technique [0002] Fine fluorine-containing chemicals play an important role in the construction of the national economy, and their applications cover various fields such as industry, medicine, textile printing and dyeing, coatings and environmental protection. As a member of the family of fine fluorine-containing chemicals, perfluoroalkanes and perfluorohalogenated alkanes are mainly used as foaming agents, refrigerants, cleaning agents, fabric finishing agents, high-efficiency fire extinguishing agents, and special solvents. [0003] In the environmental analysis of wastewater and sewage, perfluoroalkanes or perfluorohalogenated alkanes are used as extraction agents to extract oily pollutants, and the oil content is analyzed in an infrared oil detector. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/34G01N21/3577
Inventor 方海滔金坚勇应永安祝森慧陈伟王苏云闫广礼盛小梅谢福钦
Owner ZHEJIANG HUANXIN FLUORO MATERIAL