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Method for analyzing and detecting methoxyacetic acid

A technology of methoxyacetic acid and detection method, applied in the directions of analysis materials, measuring devices, material separation, etc., can solve the problems of inaccurate results, poor specificity, and poor reproducibility of gas chromatography, and achieve high sensitivity and short time consumption. , The effect of low manual operation intensity

Inactive Publication Date: 2012-07-04
CHONGQING UNISPLENDOUR CHEM
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Problems solved by technology

However, the acid-base titration method has poor specificity, and other acidic substances present in the sample are measured together, resulting in inaccurate results
In addition, the reproducibility of gas chromatography for methoxyacetic acid is poor
Therefore, said method has certain defect in the industrial product inspection of methoxyacetic acid

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  • Method for analyzing and detecting methoxyacetic acid
  • Method for analyzing and detecting methoxyacetic acid
  • Method for analyzing and detecting methoxyacetic acid

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, it should be understood that these embodiments are only for illustrating the present invention, and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art understand each aspect of the present invention The modifications of all equivalent forms all fall within the scope defined by the appended claims of the present application.

[0034] The present invention carries out ion chromatographic analysis to the methoxyacetic acid sample, and calculates the content of methoxyacetic acid in the sample with the external standard method, comprising the following steps: dissolving the methoxyacetic acid standard sample with ultrapure water to prepare the methoxyacetic acid standard stock solution , standby; dilute the methoxyacetic acid standard stock solution to prepare a methoxyacetic acid standa...

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Abstract

The invention discloses a method for analyzing and detecting methoxyacetic acid. Ion chromatography analysis is performed on a methoxyacetic acid sample, and an external standard method is used for calculating content of the methoxyacetic acid in the sample. Eluent is 2.5-4.0 mmol / L sodium carbonate, flow velocity of the eluent is 0.70-0.90 mL / min, and regenerated liquid is 50-100 mmol / L sulfuricacid. Ion chromatography adopts a negative ion chromatographic column, a detector is a chemical inhibition electric conductivity detector, and an ion chromatographic column temperature box is at 40 DEG C. The method has the advantages of being strong in specificity, high in accuracy, good in repeatability, high in sensibility, simple to operate, large in linear range, rapid, low in pollution, accurate and reliable in methoxyacetic acid analysis and detection and capable of being used for guiding research and production of the methoxyacetic acid.

Description

technical field [0001] The invention relates to an analysis and detection method of methoxyacetic acid. Background technique [0002] Methoxyacetic acid (MOA), also known as 2-methoxyacetic acid, methoxyacetic acid, is an important intermediate in organic synthesis, which can be used to synthesize a variety of fine chemical products, such as the preparation of widely used methoxyethyl Acyl chlorides, which can be used in plant protection and pharmaceutical industry, in addition, can also be used as plasticizers and coloring agents, auxiliary agents in the textile industry and flotation auxiliary agents, etc.; prepare metalaxyl bactericide, which is a broad-spectrum, High-efficiency, low-toxicity, low-residue, systemic new type of fungicide, which has good preventive effect on crop diseases caused by downy mildew, phytophthora, and pythium, can be used for processing and compounding pesticides; preparation of methyl methoxyacetate Esters are extremely valuable intermediates,...

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Application Information

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IPC IPC(8): G01N30/02
Inventor 罗延谷李文艳胡欣何咏梅韩丹
Owner CHONGQING UNISPLENDOUR CHEM
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