Rapid detection method of bisphenol A in liquid milk

A detection method and liquid milk technology, applied in the direction of measuring device, test sample preparation, sampling, etc., can solve health hazards and other problems, achieve fast and accurate detection, simple structure, convenient carrying and transportation

Inactive Publication Date: 2016-06-15
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the bisphenol A contained in the liquid milk bottle can migrate into the liquid milk during use, and may be consumed by the baby causing health hazards, so it is urgent to develop a rapid detection method for bisphenol A in liquid milk

Method used

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  • Rapid detection method of bisphenol A in liquid milk
  • Rapid detection method of bisphenol A in liquid milk
  • Rapid detection method of bisphenol A in liquid milk

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Embodiment Construction

[0023] 1. Detection method:

[0024] A rapid detection method for bisphenol A in liquid milk, comprising the steps of:

[0025] Fabrication of the spray ionization device: including the drawing of the borosilicate glass capillary and the assembly of the spray ionization device; as figure 1 As shown, the spray ionization device includes a metal microelectrode 1, a borosilicate glass capillary 2, a support 3, a metal clip 4, a power cord 5 and a high voltage power supply;

[0026] Detection: Inject ethyl acetate and liquid milk samples sequentially from the rear end of the borate glass capillary 2, after being fully mixed and extracted and layered with each other, an ethyl acetate layer and a liquid milk sample layer are formed, and the metal microelectrode 1 is formed by The rear end of the borate glass capillary is inserted into the ethyl acetate layer, the rear end of the metal microelectrode 1 is connected to the bracket 3 and the metal clip 4 respectively, and the metal cl...

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Abstract

The invention discloses a rapid detection method of bisphenol A in liquid milk. The method comprises the following steps: a spray ionization device is manufactured: drawing of a borosilicate glass capillary and assembling of the spray ionization device are included; an ion trap mass spectrometer is adopted for detection: ethyl acetate and a liquid milk sample are successively injected into the borosilicate glass capillary (2) from its real end, a metal microelectrode (1) is inserted into the ethyl acetate layer solution from the rear end of the borosilicate glass capillary after fully mixing, extraction and layering, a high voltage power supply applies 2.5kV voltage across a metal clip (4) so as to conduct into the ethyl acetate layer solution in the borosilicate glass capillary (2) from the metal microelectrode (1), generating electrospray ionization and carrying out mass spectrometry, setting parameters of the ion trap mass spectrometer, and carrying out negative ion mode detection. The rapid detection method of bisphenol A in liquid milk is low-cost, is simple to operate and can realize rapid and accurate detection of a liquid milk sample.

Description

technical field [0001] The invention relates to the field of food quality and safety detection, in particular to a rapid detection method for bisphenol A in liquid milk. Background technique [0002] Mass spectrometry is a universal method with high sensitivity, good specificity and fast response speed among many modern analytical and testing technologies. As the "gold standard" of chemical analysis, mass spectrometry has been widely used in food safety, environmental analysis, medical diagnosis and many other fields around the world. In-situ, real-time, online, non-destructive, high-throughput, and low-loss mass spectrometry methods are important trends in the development of mass spectrometry technology. The emergence of atmospheric pressure direct ionization technology has greatly improved the efficiency of mass spectrometry analysis and made rapid mass spectrometry analysis of actual samples possible. On the other hand, today's mass spectrometers are expensive, bulky, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64G01N1/38
CPCG01N1/38G01N27/64G01N2001/386
Inventor 马强
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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