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Method for determining bisphenol A without condensing and remelting for collecting extraction agent

An extraction agent, bisphenol technology, applied in the field of bisphenol A determination, to achieve the effects of environmental friendliness, saving coagulation, and rapid method

Inactive Publication Date: 2014-07-30
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the problem that there are many liquid phase microextraction pretreatment steps in the determination process of bisphenol A, and the analysis efficiency is low, and it provides a method that does not need to condense and melt again. Device for collecting extractant and method for determining bisphenol A

Method used

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  • Method for determining bisphenol A without condensing and remelting for collecting extraction agent
  • Method for determining bisphenol A without condensing and remelting for collecting extraction agent
  • Method for determining bisphenol A without condensing and remelting for collecting extraction agent

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Effect test

Embodiment 1

[0022] Embodiment 1 The method for collecting the extractant to measure bisphenol A without condensation and melting again comprises steps:

[0023] (1) Vortex-assisted liquid-phase microextraction based on the extractant collection device: use the extractant collection device, use a small amount of isooctyl alcohol as the extractant, use a vortex oscillator to vortex the water sample and the extractant system, and extract The vortex-assisted liquid phase microextraction in which the agent is broken into fine droplets to speed up the extraction speed; the extraction agent collection device is composed of a glass tube 1 and a glass tube 2, the glass tube 2 contains the water sample to be measured, and the inner diameters of both ends are the same, and the glass tube The inner diameter of both ends of 1 is very different, the outer diameter of the thick end is slightly smaller than the inner diameter of the glass tube 2, which just covers the surface of the water sample above the...

Embodiment 2

[0025] Example 2 The analysis method of bisphenol A in the raw water of a certain river is (1) separation and enrichment of bisphenol A based on the vortex-assisted liquid phase microextraction of the extractant collection device, (2) based on high performance liquid chromatography-fluorescence Detector for the detection of bisphenol A.

[0026] (1) Separation and enrichment of bisphenol A by vortex-assisted liquid phase microextraction based on extractant collection device: Take 5 mL of water containing bisphenol A and put it in a glass test tube, add 30 μL of isooctyl alcohol extractant, and use vortex Vortex-assisted extraction of water was performed with a shaker for a total of 90 s. During vortex extraction, bisphenol A in water is extracted into isooctyl alcohol. After the extraction was completed, it was left to stand for 2 minutes, and the isooctyl alcohol extractant droplets floated on the surface of the water because the density was smaller than that of water. use ...

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Abstract

The invention discloses a method for determining bisphenol A without condensing and remelting for collecting an extraction agent. The method comprises the following steps: (1) carrying out vortex-assisted liquid-phase micro-extraction based on an extraction agent collecting device; and (2) detecting bisphenol A based on a high performance liquid chromatography-fluorescence detector. A technical scheme for collecting trace extraction agent by use of the extraction agent collecting device is provided firstly, the condensing and the melting steps are eliminated, the separation and concentration efficiency of the bisphenol A in water can be improved, and the analysis is accelerated. The method has the advantages of rapidness, sensitivity, accuracy, environment friendliness and the like.

Description

Technical field: [0001] The present invention relates to a kind of device that does not need to condense and remelt to collect extraction agent and its method for the determination of bisphenol A, specifically a kind of simple, quick and sensitive method for detecting bisphenol A in water, this method is based on Vortex liquid phase microextraction is a sample pretreatment technology, combined with an extractant collection device, and high performance liquid chromatography is used as a detection instrument. The method is simple, fast and highly sensitive. Background technique: [0002] The world now produces 27 million tons of plastics containing bisphenol A every year. Bisphenol A is everywhere, from mineral water bottles, medical equipment to the inside of food packaging. The widely used bisphenol A has led to There are reports of detection of various environmental carriers including . Numerous research materials have confirmed that bisphenol A can cause endocrine diso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 刁春鹏杨肖
Owner LIAOCHENG UNIV
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