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A device for extracting nitrosamine compounds

A technology of nitrosamines and compounds, applied in the field of laboratory equipment, can solve the problems of slow fraction, fraction reflux, and prolonged fraction retention time.

Active Publication Date: 2021-01-05
GREENTOWN AGRI TESTING TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of actual use, there are also many problems
For example: because the temperature in the pipeline is lower than the temperature of the heat source, if the flow rate of the fraction on the pipeline is relatively slow, the retention time of the fraction on the pipeline will increase, and the fraction will easily flow back to the container containing the sample solution due to liquefaction during circulation. Medium, which is not conducive to improving the experimental efficiency

Method used

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  • A device for extracting nitrosamine compounds
  • A device for extracting nitrosamine compounds
  • A device for extracting nitrosamine compounds

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] This embodiment provides a technical solution:

[0030] Such as Figure 1-10 As shown, a device for extracting nitrosamine compounds includes a sample liquid holding bottle 5, a solvent holding bottle 1, a condensing device for condensing fractions, a liquid separating device for standing liquid separation of fractions, and The first vent tube 11 connected to the solvent holding bottle 1, the second vent tube 51 connected to the sample solution holding bottle 5, and the flow-promoting flow for accelerating the gas flow in the first vent tube 11 or the second vent tube 51 device; the flow-promoting device includes a first flow-promoting mechanism and a second flow-promoting mechanism; the first flow-promoting mechanism includes a first flow-promoting tube 12 connected with the first ventilation tube 11, and is arranged in the first flow-promoting tube 12 The first fixing protruding ring 68 on the tube wall, the first elastic member 66, the first baffle 65 slidingly arra...

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Abstract

The invention discloses a device for extracting a nitrosamine type compound and in particular relates to the field of laboratory apparatuses. The device comprises a sample solution containing bottle,a solvent containing bottle, a condensation device for condensing fractions, a liquid distribution device for standing and liquid distribution of the fractions, a first ventilation pipe communicated with the solvent containing bottle, a second ventilation pipe communicated with the sample solution containing bottle and a flow promoting device for accelerating gas in the first ventilation pipe or the second ventilation pipe to flow. The device disclosed by the invention has the advantage that the flowing of the fractions or a gas-state solvent can be accelerated in a pipeline so that the extraction efficiency is improved.

Description

technical field [0001] The invention relates to the field of laboratory instruments, in particular to a device for extracting nitrosamine compounds. Background technique [0002] Nitrosamine is a kind of N-nitroso compound, its general structure is R 2 (R 1 )N-N=O, according to its different molecular weight, the vapor pressure is also different, which can be distilled out by water vapor and determined by gas chromatography is called volatile nitrosamine, and vice versa is non-volatile nitrosamine. In recent years, people have found it in drinking water, water bodies after pollution treatment and disinfection, pickled vegetables, meat products and other foods. Excessive one-time intake of food containing nitrosamine compounds can cause acute toxicity. In 1987, the International Agency for Research on Cancer (IARC) has defined nitrosamines as highly carcinogenic food pollutants. [0003] At present, when measuring 10 kinds of nitrosamine compounds in meat products, the ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04
CPCB01D11/04
Inventor 朱萌萌周敏周婷婷王川丕李樱红章虎谷建潮陈卢涛胡松黎斌刘小羽俞璐萍
Owner GREENTOWN AGRI TESTING TECH CO LTD
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