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Method for detecting methoxyacetic acid in leather and textiles

A methoxyacetic acid and detection method technology, applied in the field of chemical detection, can solve problems such as human health and environmental hazards, damage to fertility, fetal harm, etc.

Active Publication Date: 2015-04-08
GUANGZHOU GRG METROLOGY & TEST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been confirmed that methoxyacetic acid has reproductive toxicity, which will impair fertility, cause harm to the fetus, and is easy to cause burns, which is a serious hazard to human health and the environment
[0003] Methoxyacetic acid is the eighth batch of 54 new SVHC substances confirmed by REACH. At present, there is no general international standard or industry standard for the detection of this substance

Method used

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  • Method for detecting methoxyacetic acid in leather and textiles
  • Method for detecting methoxyacetic acid in leather and textiles
  • Method for detecting methoxyacetic acid in leather and textiles

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for detecting methoxyacetic acid in leather and textiles, which is detected by gas chromatography-mass spectrometry, comprising the following steps:

[0038] A. Standard solution preparation

[0039] Preparation of methoxyacetic acid standard stock solution: Weigh a certain amount of methoxyacetic acid standard product, dilute it in a 50mL volumetric flask with chromatographically pure methanol, and prepare a 1000mg / L stock solution.

[0040] Preparation of methoxyacetic acid standard working solution: Accurately pipette appropriate amount of standard stock solution, dilute step by step with chromatographically pure methanol, and prepare 0.05mg / L, 0.1mg / L, 0.5mg / L, 1mg / L, 2mg / L , 5mg / L, 10mg / L standard working solution.

[0041] B. Sample pretreatment

[0042] Sampling: Take a representative sample, cut it into a size of about 5mm×5mm, accurately weigh 1.0g (accurate to 0.0001g), and place it in a 60mL glass reaction bottle; add extraction agent: add methanol...

Embodiment 2

[0057] Example 2 See Table 1 for the retention time, qualitative and quantitative ions of the target substance (methoxyacetic acid) in the example.

[0058]Table 1 Retention time, qualitative and quantitative ions and abundance ratio of the target

[0059]

[0060] From Table 1 and figure 1 It can be seen that under the detection conditions of Example 1, the target substance (methoxyacetic acid) can be well separated.

Embodiment 3

[0061] Embodiment 3 linear relationship

[0062] Under the optimized detection conditions of the present invention, the standard solution of methoxyacetic acid is detected within the concentration range of 0.05-10 mg / L. Standard working curve see figure 2 ,Depend on figure 2 It can be seen that its concentration has a good linear relationship with the response value, the linear equation: Y=67521.85X-3605.364, the correlation coefficient R 2 =0.9992.

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Abstract

The invention discloses a method for detecting methoxyacetic acid in leather and textiles, which adopts gas chromatography-mass spectrometry for detection. Under the optimized detection conditions of the present invention, the sample to be tested has a wide linear range: a linear relationship in the range of 0.05-10 mg / L, the correlation coefficient is 0.9992, the lower detection limit of the method: 0.05 mg / L, a higher Sensitivity and precision: the recovery rate of standard addition was 97.5% to 111%, and the relative standard deviation RSD (n=7) was less than 2.1%. The detection method of the invention is convenient and efficient, and can meet the detection requirements of methoxyacetic acid in textiles and leather products.

Description

technical field [0001] The invention relates to the field of chemical detection, in particular to a method for detecting methoxyacetic acid in leather and textiles. Background technique [0002] Methoxyacetic Acid (Methoxyacetic Acid), a colorless transparent liquid, is often widely used as an intermediate of pesticides, medicines and dyes. Studies have shown that methoxyacetic acid can damage multiple organs and can cause deformities in animals. It has been confirmed that methoxyacetic acid has reproductive toxicity, which will impair fertility, cause harm to fetuses, and is easy to cause burns, which is a serious hazard to human health and the environment. [0003] Methoxyacetic acid is the eighth batch of 54 new SVHC substances confirmed by REACH. At present, there is no general international standard or industry standard for the detection of this substance. Contents of the invention [0004] Based on this, it is necessary to provide a method for detecting methoxyacet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N27/62
Inventor 李支薇王华王海鸣任祥祥
Owner GUANGZHOU GRG METROLOGY & TEST CO LTD
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