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Determination method for environmental cleaning performance of textile

A technology for environmental purification and measurement methods, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as quantitative evaluation of purification performance indicators, and achieve the effect of simple and easy test methods

Inactive Publication Date: 2014-09-24
HENGYUANXIANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is not yet a complete set of methods to quantitatively evaluate the purification performance indicators of these fabrics with environmental purification performance.

Method used

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  • Determination method for environmental cleaning performance of textile

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Nessler's reagent was prepared according to the following steps.

[0021] Weigh 12g of sodium hydroxide (NaOH) and dissolve it in 60ml of water.

[0022] Weigh 1.7g mercuric dichloride (HgCl 2 ) was dissolved in 30ml of water.

[0023] Weigh 3.5g of potassium iodide (KI) and dissolve in 10ml of water.

[0024] Under constant stirring, slowly add the mercuric dichloride solution into the potassium iodide solution until the red precipitate formed is no longer dissolved. Under constant stirring, slowly add the cold sodium hydroxide solution into the above mixed solution of mercuric dichloride and potassium iodide, then add the remaining mercuric dichloride solution, let it stand in the dark for 24 hours, extract the supernatant and store it In a brown bottle, stoppered tightly with a rubber stopper. Nessler's reagent needs to be kept refrigerated in the refrigerator and can be stored stably for one month.

[0025] 2. Sulfuric acid solution: ρ=1.84g / ml, c(H 2 SO 4...

Embodiment 2

[0059] 1. Nessler's reagent was prepared according to the following steps.

[0060] Weigh 12g of sodium hydroxide (NaOH) and dissolve it in 60ml of water.

[0061] Weigh 1.9g mercuric dichloride (HgCl 2 ) was dissolved in 30ml of water.

[0062] Weigh 4g of potassium iodide (KI) and dissolve in 12ml of water.

[0063] Under constant stirring, slowly add the mercuric dichloride solution into the potassium iodide solution until the red precipitate formed is no longer dissolved. Under constant stirring, slowly add the cold sodium hydroxide solution into the above mixed solution of mercuric dichloride and potassium iodide, then add the remaining mercuric dichloride solution, let it stand in the dark for 24 hours, extract the supernatant and store it In a brown bottle, stoppered tightly with a rubber stopper. Nessler's reagent needs to be kept refrigerated in the refrigerator and can be stored stably for one month.

[0064] 2. Sulfuric acid solution: ρ=1.84g / ml, c(H 2 SO 4 )=0...

Embodiment 3

[0067] The water used in the preparation of the Nessler's reagent is ammonia-free water.

[0068] Before weighing the weight of the textile sample, the textile sample was subjected to constant temperature and humidity treatment for more than 8 hours.

[0069] In the present invention, dilute sulfuric acid solution is used to extract the ammonia gas absorbed by the sample, and Nessler's reagent is used to react with ammonium ions in the extract to generate a yellow-brown complex. The chromaticity of the complex has a linear relationship with the concentration of ammonia. , Measure the absorbance at a wavelength of 420nm with a visible-ultraviolet spectrophotometer, and then calculate the concentration of ammonia in the extract and the ammonia absorption value of the sample. The test method is simple and accurate, and can quantitatively measure the purification performance of the fabric.

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Abstract

The invention discloses a determination method for environmental cleaning performance of a textile. The method comprises the following steps: (1) preparing a Nessler reagent; (2) preparing a standard ammonia solution; (3) taking a textile sample, accurately weighing the weight of the textile sample and sealing the textile sample and a container filled with the standard ammonia solution together in a constant-temperature container; (4) taking the obtained textile sample out, carrying out ventilation, putting the sample into a dilute sulphuric acid solution and carrying out continuous stirring so as to fully extract ammonia absorbed by the sample; and (5) adding the Nessler reagent into obtained extract, carrying out uniform mixing, measuring absorbance by using a spectrophotometer and calculating the ammonia absorption value of the textile sample according to parameters of the standard curve of the standard ammonia solution. According to the invention, the concentration of ammonia gas in the extract and the ammonia absorption value of the textile sample are calculated through ammonia absorption of the textile, so the absorption level of the textile is measured. The method provided by the invention is simple and accurate and can quantitatively measure purifying performance of the textile.

Description

technical field [0001] The invention relates to the field of textile detection, in particular to a method for measuring the purification performance of textiles. Background technique [0002] With the increasingly serious environmental pollution, various harmful gases (such as formaldehyde, etc.) in public places such as homes, office decorations, restaurants, and hotels are gradually increasing. In public places and in life, people inevitably encounter the smell of cigarettes, car exhaust, cooking fumes from the kitchen, toilet smells, and odors caused by sweat. In daily homes, offices and some public places, people hope that home textile products and soft decoration materials, such as curtains, sofa releases, sheets and bedspreads, automotive textiles, trains, and aircraft textiles, can absorb pollutants in the environment while beautifying the environment. Harmful gas, so as to achieve the function of environmental purification. There are deodorizing or purification tre...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 刘瑞旗陈忠伟何爱芳邱洪生王慧张晓霞
Owner HENGYUANXIANG GRP
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