Method for separating and enriching Sudan red series coloring agents in large-volume environment water sample

A separation and enrichment, Sudan red technology, applied in the direction of material separation, analysis materials, measuring devices, etc., can solve the problems of insufficient extraction capacity and extraction capacity, and achieve high extraction and enrichment capacity, good fluidity, and large surface area Effect

Active Publication Date: 2016-08-03
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the limitations of the existing monolithic solid-phase extraction technology extraction ability and extraction capacity, and to provide a method for separating and enriching Sudan red series dyes in large-volume environmental water samples

Method used

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  • Method for separating and enriching Sudan red series coloring agents in large-volume environment water sample
  • Method for separating and enriching Sudan red series coloring agents in large-volume environment water sample
  • Method for separating and enriching Sudan red series coloring agents in large-volume environment water sample

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Embodiment

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, a new type of extraction and enrichment of trace amounts of Sudan in large-volume environmental water samples proposed according to the present invention The method of red and its analog p-red dye and its application specific implementation, method, steps, features and efficacy, as follows in detail.

[0021] Specific steps are as follows:

[0022] (1) Preparation of STY / DVB / EGDMApolyHIPE monolithic column

[0023] Add the four substances of STY, DVB, EGDMA and span80 into the sample tube according to the volume ratio of 6:3:3:4 to form the organic phase and mix well; prepare 2.4mg / mL of K 2 S 2 o 8 Aqueous solution, to form the water phase, mix evenly; add the water phase to the organic phase drop by drop, and stir rapidly at the same time, gradual...

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Abstract

The invention discloses a method for separating and enriching Sudan red series coloring agents in a large-volume environment water sample. The method comprises the following steps: synthesizing a hydrophilic polystyrene(STY)-divinylbenzen (DVB)- ethylene glycol dimethacrylate (EGDMA) high internal phase emulsion polymerization monolithic column through a high internal phase emulsion polymerization technology, wherein a volume ratio of the STY to the DVB to the EGDMA to span80 is 6:3:3:4, and the volume ratio of a water phase is 90-92%; allowing 500-1000mL of an environment water sample to go through the high internal phase emulsion polymerization monolithic column at a flow velocity in a range of 1-2mL / min, and extracting and enriching a trace amount of the Sudan red series coloring agents in the sample; cleaning the monolithic column with a 10% or 20% aqueous acetonitrile solution, eluting the monolithic column with acetone, and collecting the obtained eluate; and drying the collected eluate, and re-dissolving the dried eluate in acetonitrile to obtain a solution to be detected in order to complete separation and enrichment of the Sudan red series coloring agents in the environment water sample.

Description

technical field [0001] The invention belongs to the technical field of analytical chemical sample pretreatment, and in particular relates to a method for separating and enriching Sudan red series dyes in large-volume environmental water samples. The method prepares a high internal phase with strong extraction ability and high enrichment factor Emulsion polymer monolithic column, used for the enrichment, separation and detection of Sudan Red series chemical dye targets in environmental water samples, soil and other complex matrices. Background technique [0002] The scientific name of Sudan Red is Sudan (Sudan), which is divided into Sudan Red I, Sudan Red II, Sudan Red III and Sudan Red IV. Sudan Red is a synthetic lipophilic azo industrial dye, which is widely used in the color enhancement of solvents, oil paints, motor oil, gasoline, wax, and the dyeing and luster of shoes and floors. Because the color of food dyed with Sudan Red is very bright and not easy to fade, it ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/08
CPCG01N30/02G01N30/08
Inventor 杜甫佑郑弦阮贵华
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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