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Method for detecting free hydrolysis formaldehyde in textile

A technology for textiles and formaldehyde, applied in the field of product safety and testing, can solve problems such as the influence of additives, and achieve the effects of less organic solvent consumption, high sample recovery rate and high sensitivity

Inactive Publication Date: 2012-07-18
中华人民共和国苏州出入境检验检疫局
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a convenient and accurate detection method for free hydrolyzed formaldehyde in turbid or colored textiles, which solves the problem that textiles in the prior art are easily affected by dyeing during printing and dyeing finishing when measuring formaldehyde content. Agents, additives, etc.

Method used

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  • Method for detecting free hydrolysis formaldehyde in textile
  • Method for detecting free hydrolysis formaldehyde in textile
  • Method for detecting free hydrolysis formaldehyde in textile

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Embodiment Construction

[0039] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

[0040] Example: Detection of free hydrolyzed formaldehyde in turbid or colored textiles in water extract

[0041] 1 Materials and methods

[0042] 1.1. Instruments and reagents:

[0043] Cyclohexane (HPLC grade); concentrated hydrochloric acid (excellent grade); formaldehyde standard solution (10.4mg / mL); 0.1% derivatization reagent: take 0.1g (accurate to 0.001g) of 2,4-dinitrobenzene Dissolve hydrazine (DNPH for short) and 24mL of concentrated hydrochloric acid in an appropriate amount of water, and dissolve...

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Abstract

The invention discloses a method for detecting free hydrolysis formaldehyde in a textile. A technical procedure for detecting the free hydrolysis formaldehyde in a water extract turbid or colored textile is established; after being derived, a target compound is extracted and purified, and a gas chromatograph (with an electron capture detector) is used for quantitative and quantitive analysis; and the method can be suitable for measurement of the free hydrolysis formaldehyde in various types of textiles, such as water extract turbid or colored customs, fiber fillings, yarns, custom materials, family decorative products and the like. According to the method, the using amount of organic solvents is small, the impurity interference is low, and the sample recycling rate is high.

Description

technical field [0001] The invention belongs to the technical field of product safety and detection, and in particular relates to a method for detecting free hydrolyzable formaldehyde in textiles. Background technique [0002] Formaldehyde is a protoplasmic poison that destroys the protein of biological cells. It can cause damage to human skin, respiratory tract and internal organs, anesthetize the central nervous system, and cause pulmonary edema, hepatic coma, and kidney failure. The World Health Organization confirms that formaldehyde is a teratogen, a carcinogen, and a source of allergies, and long-term exposure will cause gene mutations. In the textile industry, formaldehyde is widely used mainly in two fields of fiber production and printing and dyeing finishing. Due to its active reactivity and low price, formaldehyde can be used to combine with cellulose fiber hydroxyl groups through hydroxymethyl groups, which can significantly improve the durability of printing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/70
Inventor 朱振华顾娟红徐振东陈军
Owner 中华人民共和国苏州出入境检验检疫局
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