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Detection method for antibacterial agent in textile product

A detection method and technology for antibacterial agents, applied in the field of product safety and detection, can solve problems such as being unsuitable for the detection of various antibacterial agents, and achieve the effect of facilitating the end point of liquid-solid extraction, improving extraction efficiency and realizing control.

Inactive Publication Date: 2016-01-06
HANGZHOU QUALITY TECH SUPERVISION INSPECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] CN103728394B (2015-8-12) discloses a kind of antibacterial agent detection method of daily chemical products based on graphene solid phase extraction, yet this method is not suitable for the detection of multiple antibacterial agents in textiles

Method used

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  • Detection method for antibacterial agent in textile product
  • Detection method for antibacterial agent in textile product
  • Detection method for antibacterial agent in textile product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Test method

[0054] 1.1 Sample pretreatment

[0055] Take a representative sample, cut it into small pieces of about 5mm×5mm, then weigh 1.0g (accurate to 0.01g), add 80mL of ethanol, and perform Soxhlet extraction for 2 hours.

[0056] 1.2 Test equipment

[0057] The detection method is to use EclipseXDB-C18 column, the specification is 250mm×4.6mm×5μm; the first mobile phase is acetonitrile and deionized water, the volume ratio is 50:50, the flow rate is 1mL / min; the column temperature is 30; the injection volume It is 10μL; the detector is a diode array detector.

[0058] The mobile phase also includes a second mobile phase; the second mobile phase is a phosphate buffer with a pH value of 3.5;

[0059] The specific detection method is to use a C18 column to split the components in the extract:

[0060] At 0-25min, the volume ratio of the first mobile phase to the second mobile phase was 88 / 12; at 26-35min, the volume ratio of the first mobile phase to the sec...

Embodiment 2

[0062] Take a representative sample, cut it into 0.5g small pieces, add 50mL ethanol, and extract by Soxhlet for 1.5h; then take the extract for testing;

[0063] The detection method is a C18 column, the first mobile phase includes acetonitrile and deionized water, and the column temperature is 25°C; the detector is a diode array detector.

[0064] The mobile phase also includes a second mobile phase; the second mobile phase is a phosphate buffer with a pH value of 4.5;

[0065] The second mobile phase phosphate buffer was prepared by mixing 0.25% phosphoric acid solution and 12% sodium hydroxide solution to a pH value of 4.5.

[0066] The preparation method of phosphate buffer solution is: titrate 0.2% phosphoric acid solution to 10% sodium hydroxide solution, add air by stirring while titrating, and mix until the pH value is 4.0.

[0067] The specific detection method is to use a C18 column to split the components in the extract:

[0068] At 0-25min, the volume ratio of t...

Embodiment 3

[0070] Take a representative sample, cut it into 1.5g small pieces, add 200mL ethanol, and extract by Soxhlet for 3h;

[0071] Then take the extract and detect it;

[0072] The detection method is a C18 column, the first mobile phase includes acetonitrile and deionized water, and the column temperature is 35°C; the detector is a diode array detector.

[0073] The mobile phase also includes a second mobile phase; the second mobile phase is a phosphate buffer with a pH value of 4.0;

[0074] The second mobile phase phosphate buffer was prepared by mixing 0.15% phosphoric acid solution and 8% sodium hydroxide solution to a pH value of 4.0.

[0075] More preferably, the preparation method of the phosphate buffer is: titrate 0.2% phosphoric acid solution to 10% sodium hydroxide solution, add air by stirring while titrating, and mix until the pH value is 4.0.

[0076] The specific detection method is to use a C18 column to split the components in the extract:

[0077] At 0-25min,...

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Abstract

Belonging to the technical field of product safety and detection, the invention in particular relates to a detection method for an antibacterial agent in a textile product. The method takes triclocarban, alpha-bromocinnamaldehyde, 2-(4-thiazole)-benzimidazole, and 4-chloro-3-methylphenol as the antibacterial agent target compounds to detect the residual amount of the antibacterial agent target compounds by the steps of: taking a representative sample, cutting the sample into 0.5-1.5g small pieces, adding 50-200mL of ethanol and performing Soxhlet extraction for 1.5-3h; then taking the extracted liquid to perform detection; specifically, employing a C18 column, adopting a mobile phase including acetonitrile and deionized water, and keeping the column temperature at 25-35DEG C; selecting a diode array detector as the detector; controlling the detection wavelength at 265, 300, 300, and 230nm respectively; and employing an improved Soxhlet extractor as for Soxhlet extraction, with the Soxhlet extractor including an outer tube and an inner tube that are sleeved together, and the upper end grinding port of the inner tube being connected to a condenser. The method provided by the invention has high efficiency in extraction and detection analysis of the antibacterial agent in the textile product.

Description

technical field [0001] The invention belongs to the technical field of product safety and detection, and in particular relates to a detection method of antibacterial agents in textile products. Background technique [0002] With the development of science and technology, textiles have gradually expanded to other functions after meeting people's basic needs for shelter from the cold. All kinds of antibacterial underwear, antibacterial socks, antibacterial yarn, antibacterial medical textiles, antibacterial wet wipes and other antibacterial fabrics are becoming hot commodities in the market. The so-called antibacterial fabric refers to the use of various antibacterial agents to carry out antibacterial processing on the fabric without changing the sensory or physical and chemical properties of the fabric itself (such as strength, water absorption, hand feeling, color difference), not only making the fiber material itself resistant to microbial decomposition Deterioration can a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
Inventor 陈兆波顾虎秦鑫赵凯李莉
Owner HANGZHOU QUALITY TECH SUPERVISION INSPECTION INST
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