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Rapid detection method for permethrin in anti-mosquito fabric

A detection method and permethrin technology are applied in the directions of measurement device, material separation, and material analysis, etc., which can solve the problems of long pretreatment time and complicated process, and achieve the effects of high sensitivity, simple detection, and shortened detection period.

Active Publication Date: 2021-05-28
SHANGHAI INST OF QUALITY INSPECTION & TECHN RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in existing detection methods such as long pretreatment time, using organic reagents as extraction solvents, and cumbersome process, the present invention provides a rapid detection method for permethrin in textiles. analysis without the problem of recontamination with organic solvents

Method used

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  • Rapid detection method for permethrin in anti-mosquito fabric
  • Rapid detection method for permethrin in anti-mosquito fabric
  • Rapid detection method for permethrin in anti-mosquito fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Detection of permethrin in textile samples with textile fiber composition of 100% lyocell:

[0040] (1) Take a textile sample with blue and white stripes and 100% lyocell, cut it into fragments or powder with a particle size of 0.5mm or less with scissors and mix evenly, weigh 0.50mg of the mixed sample, place it in a hot Crack the bottom of the sample cup; and take an appropriate amount of silanized glass wool and put it into the thermal cracking sample cup to cover the sample to prevent it from floating out;

[0041] (2) Use n-hexane as a solvent, weigh the standard substance of permethrin, prepare a standard stock solution with a concentration of 1000±50 μg / mL, and then dilute it step by step to a concentration of 100 μg / mL, 10 μg / mL, and 1 μg / mL Pipette 5 μL of 1 μg / mL standard working solution, and 1 μL, 2 μL, 4 μL, 8 μL, 10 μL of 10 μg / mL standard working solution and 10 μL of 100 μg / mL standard working solution into the pyrolysis sample cup After evaporating the...

Embodiment 2

[0050] Detection of permethrin in textile samples with textile fiber composition of 9.98% spandex and 90.02% nylon:

[0051] (1) Take a red textile sample with a white background and a composition of 9.98% spandex and 90.02% nylon, cut it into fragments or powders with a particle size of 0.5mm or less with scissors and mix evenly, weigh 1.00mg of the mixed sample, Place it at the bottom of the pyrolysis sample cup; and put an appropriate amount of silanized glass wool into the pyrolysis sample cup to cover the sample to prevent it from floating out;

[0052] (2) prepare the standard item of permethrin, same as step (2) in embodiment 1;

[0053] (3) The thermal cracking sample cup described in step (1), (2) is placed in the thermal cracking equipment of thermal cracking-gas chromatography-tandem mass spectrometry, and thermal cracking-gas chromatography-tandem mass spectrometry is carried out, wherein:

[0054] The thermal cracking adopts micro-furnace heating, the thermal cra...

Embodiment 3

[0060] Detection of permethrin in textile samples whose textile fiber composition is 100% nylon:

[0061] (1) Select a blue textile sample with a composition of 100% nylon, cut it into fragments or powder with a particle size of 0.5 mm or less with scissors and mix evenly, weigh 1.50 mg of the mixed sample, and place it in the pyrolysis sample and put an appropriate amount of silanized glass wool into the thermal cracking sample cup to cover the sample to prevent it from floating out;

[0062] (2) prepare the standard item of permethrin, same as step (2) in embodiment 1;

[0063] (3) The thermal cracking sample cup described in step (1), (2) is placed in the thermal cracking equipment of thermal cracking-gas chromatography-tandem mass spectrometry, and thermal cracking-gas chromatography-tandem mass spectrometry is carried out, wherein:

[0064] The pyrolysis adopts micro-furnace heating, the pyrolysis temperature is 500°C, and the pyrolysis time is 40s;

[0065] The chromat...

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Abstract

The invention provides a rapid detection method for permethrin in anti-mosquito fabric, and the method comprises the following steps: (1) crushing a sample to be detected into fragments or powder with the particle size of 0.5 mm or less, uniformly mixing, weighing a proper amount of the mixed sample, putting the mixed sample at the bottom of a thermal cracking sample cup, and putting a proper amount of silanized glass wool into the thermal cracking sample cup; (2) preparing a standard product of permethrin; (3) respectively putting the thermal cracking sample cup in the step (1) and the standard substance in the step (2) into thermal cracking equipment, and carrying out thermal cracking-gas chromatography-tandem mass spectrometry analysis; and (4) carrying out qualitative and quantitative detection according to the retention time and peak area comparison of the permethrin in the to-be-detected sample and the standard substance. The method can accurately and efficiently detect whether the textile contains permethrin or not, the sample does not need to be extracted by a chemical solvent, the detection period is shortened to the maximum extent, and the method is environmentally friendly, healthy, small in sample weighing amount, low in detection limit and high in sensitivity.

Description

technical field [0001] The invention belongs to the technical field of textile detection, and in particular relates to a rapid detection method for permethrin in anti-mosquito fabrics. Background technique [0002] In recent years, different types of anti-mosquito textiles have been put into the market and are favored by consumers. Permethrin is a kind of pyrethroid insecticide, and it is the main component of moth-proof finishing agents widely used in domestic wool textile industry. Although permethrin has the characteristics of broad spectrum and high efficiency, it has been found that permethrin has It is a big safety hazard. Mosquito repellents in contact with the skin will produce systemic side effects, including neurotoxicity, allergies, etc. The use of high doses will have adverse effects on special populations such as children and pregnant women. China Textile Business Association group standard T / CTCA3-2017 "Permethrin anti-mosquito fabrics" stipulates the safety a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/72
CPCG01N30/02G01N30/06G01N30/72Y02A50/30
Inventor 包海峰赵海浪朱峰曹石淼谭玉静周兆懿王麟诸佩菊庄园园裘惠敏张文良吴东晓杨沁睿韩莹莹
Owner SHANGHAI INST OF QUALITY INSPECTION & TECHN RES
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