Quick detection method of di(2-ethylhexyl) phthalate in beverages

A bis-phthalate and ethylhexyl technology, which is applied in measuring devices, analyzing materials, and analyzing materials by electromagnetic means, can solve the problems of mass spectrometry analysis, high price of mass spectrometer, cumbersome operation, etc., and achieve convenience Carry and transport, improved sensitivity and specificity, cost-effective results

Inactive Publication Date: 2016-05-25
CHINESE ACAD OF INSPECTION & QUARANTINE
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Problems solved by technology

On the other hand, today's mass spectrometers are expensive, bulky, cumbersome to operate and require users to ma

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  • Quick detection method of di(2-ethylhexyl) phthalate in beverages
  • Quick detection method of di(2-ethylhexyl) phthalate in beverages
  • Quick detection method of di(2-ethylhexyl) phthalate in beverages

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Embodiment Construction

[0023] 1. Detection method:

[0024] A kind of rapid detection method of bis(2-ethylhexyl) phthalate in beverage, comprises the steps:

[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 beverage 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 beverage sample layer are formed, and the metal microelectrode 1 is coated with boric acid The rear end of the salt glass capillary is inserted into the ethyl acetate layer, the rear end of the metal microelectrode 1 is connected to the support 3 and the metal clip 4 respectiv...

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Abstract

The invention discloses a quick detection method of di(2-ethylhexyl) phthalate in beverages. The quick detection method includes following steps: making an atomizing ionization device: drawing a borosilicate glass capillary and assembling the spraying ionization device; detecting: sequentially injecting ethyl acetate and a beverage sample into the borosilicate glass capillary, after fully mixing, extracting and mutually layering, inserting a metal microelectrode (1) into an ethyl acetate layer solution from the rear end of the borosilicate glass capillary, applying high voltage on a metal clamp from a high-voltage power source, conducting to the ethyl acetate layer solution in the borosilicate glass capillary (2) from the metal microelectrode (1), generating electric spray for mass spectroscopy, setting parameters of an ion trap mass spectrometer, and performing positive ion mode detection. The quick detection method is low in cost, simple and convenient to operate and supportive of quick and accurate detection of the beverage 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 bis(2-ethylhexyl) phthalate in beverages. Background technique [0002] In 2011, beverages produced in Taiwan were found to contain bis(2-ethylhexyl) phthalate, which is a plasticizer commonly used in plastic materials. It is a non-edible substance and should not be used in food production and processing . Therefore, it is urgent to develop a rapid detection method for bis(2-ethylhexyl)phthalate in beverages. [0003] 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 s...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 马强欧阳证
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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