Rapid and sensitive method for detecting melamine

A melamine and sensitive technology, applied in the field of rapid and sensitive detection of melamine, can solve the problems of inability to achieve rapid analysis, time-consuming and laborious, and insufficient detection sensitivity, and achieves the effects of high cost performance, small size and portability, and fast measurement speed.

Inactive Publication Date: 2010-06-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods require cumbersome sample pretreatment procedures, are time-consuming and laborious, cannot achieve rapid analysis, and the detection sensitivity is not high enough (2ppm level)

Method used

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  • Rapid and sensitive method for detecting melamine
  • Rapid and sensitive method for detecting melamine
  • Rapid and sensitive method for detecting melamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 2 The migration spectrum of pure melamine detected by ion mobility spectrometry is given, as can be seen from the figure, melamine is well detected, the reagent ion peak is at 4.34ms, and the characteristic peak of melamine is at 8.48ms.

Embodiment 2

[0034] image 3 Shown is the mobility spectrum of a milk sample detected by ion mobility spectrometry. From two graphs ( figure 2 and 3) comparison, it can be seen that this method can sensitively detect melamine in milk samples.

Embodiment 3

[0036] Figure 4 Shown is the mobility spectrum of the milk powder sample detected by ion mobility spectrometry. From two graphs ( figure 2 and 4 ) comparison, it can be seen that this method can also sensitively detect melamine in milk samples.

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Abstract

The invention discloses a new method for detecting melamine. Based on an ion mobility spectrometry technology, by using the ion mobility spectrometry as a detection means and combining a simple solvent extraction pretreatment method, the method has high detection speed and sensitivity and needs only 0.5 minute for analysis and less than 5 minutes for pretreatment; and the detection limit can reach 50ppb.

Description

technical field [0001] The present invention relates to the detection method of melamine, specifically a new fast, sensitive method for detecting melamine, this method is based on ion mobility spectrometry technology, utilizes ion mobility spectrometer as analysis means, utilizes simple solvent extraction Pretreatment technology, fast detection speed, analysis time is only 0.5 minutes, sample pretreatment time is less than 5 minutes, high sensitivity, detection limit can reach 50ppb. Background technique [0002] Melamine (English name Melamine), referred to as triamine, is a triazine nitrogen-containing heterocyclic organic compound, an important nitrogen heterocyclic organic chemical raw material. Appearance is pure white monoclinic prism crystal, odorless, density 1.573g / cm 3 (16°C). Atmospheric melting point 354°C (decomposition); rapid heating sublimation, sublimation temperature 300°C. Soluble in hot water, water-soluble 3G / L (20º; C), slightly soluble in cold water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64
Inventor 李海洋仓怀文董璨徐秀明杜永斋王贞鑫鞠帮玉王海龙丛润滋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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