CN109946257A - A method of measurement non-woven fabrics is to the benzethonium chloride rate of adsorption - Google Patents
A method of measurement non-woven fabrics is to the benzethonium chloride rate of adsorption Download PDFInfo
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- CN109946257A CN109946257A CN201910142523.2A CN201910142523A CN109946257A CN 109946257 A CN109946257 A CN 109946257A CN 201910142523 A CN201910142523 A CN 201910142523A CN 109946257 A CN109946257 A CN 109946257A
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- benzethonium chloride
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Abstract
The invention discloses a kind of measurement non-woven fabrics to the method for the benzethonium chloride rate of adsorption comprising following steps: non-woven fabrics and benzethonium chloride solution are poured into container；Start circulating pump, so that benzethonium chloride solution circulates between container and floating cuvette；Starting ultraviolet source is irradiated the benzethonium chloride solution in floating cuvette；Absorbance value A of the benzethonium chloride solution in initial concentration is measured using ultraviolet specrophotometer0With benzethonium chloride solution time t absorbance value At；Show that non-woven fabrics is to the adsorbance Q of benzethonium chloride in time t using adsorbance calculation formulat；Non-woven fabrics is finally calculated in time t to the rate of adsorption q of benzethonium chloridet.The present invention accurately determines non-woven fabrics to the rate of adsorption of benzethonium chloride, has the characteristics that easy to operate and accuracy is high.
Description
Technical field
The present invention relates to a kind of measurement non-woven fabrics to the method for the benzethonium chloride rate of adsorption.
Background technique
Wet tissue is one of people's daily life hygiene articles, it is usually by aqueous paper or non-woven fabrics structure
At.Since aqueous tissue is lower than non-woven fabrics intensity, dust is serious and hand feel performance is poor, and add wet strengthening agents for papermaking meeting
The problem of introducing chemical component, therefore the presently commercially available wet sanitary napkins in China are mainly based on non-woven fabrics.In order to reach skin
Cleaning, moisturizing, disinfection and sterilization effect, usually plus by certain fungicide (main component is that benzene is pricked in wet sanitary napkins product
Oronain etc.).Since wet tissue is the amenities with direct body contact, especially some wet sanitary napkins category women, baby are personal
The safe mass problem of nursing materials, fungicide is got more attention.
Benzethonium chloride be a new generation quartemary ammonium compound, with traditional disinfectant such as iodine class (such as povidone iodine),
Aldehydes (such as glutaraldehyde), phenols (such as droplet dew), alcohols (such as alcohol), peroxide (such as hydrogen peroxide) compare, benzyl rope chlorine
Ammonium has broad spectrum high-effect, many merits such as sterilizes, kills the virus, is non-corrosive, is nontoxic.Therefore, benzethonium chloride is in wet tissue, various anti-
It is used widely in bacterium formula, women sanitary articles and skin care implement etc..Although the benzethonium chloride content in wet tissue is very
Low, but still have certain stimulation to skin, especially skin more sensitive people is likely to occur rubescent equal diseases of itching after use
Shape.Relevant regulations are clearly stipulate that the benzethonium chloride limitation used in cosmetics as preservative is 0.1%.Currently, l Water Paper
Towel professional standard standardizes the indexs such as the tensile strength of wet tissue, liquid content, transportable fluorescent material, detergency, but
It is not yet for the unified standard of benzethonium chloride content in wet tissue.Wet tissue generally consists of two parts: fabric carrier (wet tissue)
And dipping solvent (solution) therein, these solvents include a certain amount of benzethonium chloride, then through folding, humidification, packaging etc.
Wet tissue product is made in operating procedure, and the benzethonium chloride content marked in commercially available wet sanitary napkins is generally 0.08%~0.1%.Cause
This, wet tissue product should impregnate humidification strict control benzethonium chloride content from beginning of production, that is, wet tissue medical fluid, and guarantee is made
The healthy and safe and optimized production process process and Improving The Quality of Products of user has very important realistic meaning.
Part benzethonium chloride meeting of the monomer in solid phase in the prevalence of adsorption phenomena, i.e., during wet tissue liquid feeding in solution
It is adsorbed on solid phase non-woven fabrics, benzethonium chloride content in soak is caused to reduce.It therefore, is guarantee end product quality system
One, it should be according to benzethonium chloride changes of contents, that is, non-woven fabrics in soak to the rate of adsorption of benzethonium chloride in wet tissue production process
Addition benzethonium chloride in time.Also, adsorption time is to influence benzethonium chloride to adsorb critically important factor, if in wet tissue production process
Immersion medical fluid is too short, and the benzethonium chloride content for causing non-woven fabrics to adsorb also not up to is saturated, then in finished product wet tissue Chinese medicine liquid
Part benzethonium chloride can be transferred on solid phase non-woven fabrics, and wet tissue liquid benzethonium chloride content is caused not meet with actual content, thus
There is the underproof phenomenon of product.Currently, the detection method of benzethonium chloride mainly has HPLC method, gas chromatography, spectroscopic methodology etc.；
Wherein using benzethonium chloride, the existing characteristics absorption peak at wavelength 269nm carries out quantitative detecting analysis to ultraviolet spectrophotometry, and
This method have many advantages, such as it is easy to operate, be easily mastered, instrument price it is lower, therefore have bigger popularization and practicability.But
That above method is appropriate only for determining the content of benzethonium chloride in sample, due to non-woven fabrics to the rate of adsorption of benzethonium chloride too
Fastly, the research there are no non-woven fabrics to the benzethonium chloride rate of adsorption so far.
Summary of the invention
Present invention aims to overcome that the shortcomings that prior art and insufficient, a kind of measurement non-woven fabrics is provided to benzethonium chloride
The method of the rate of adsorption has the characteristics that easy to operate and accuracy is high, can accurately measure non-woven fabrics and adsorb to benzethonium chloride
Rate.
To achieve the above object, The technical solution adopted by the invention is as follows:
A method of measurement non-woven fabrics is to the benzethonium chloride rate of adsorption, including absorbance measuring device, absorbance measurement
Device includes container, circulating pump, floating cuvette, ultraviolet source and ultraviolet specrophotometer, and container is for holding benzethonium chloride
Solution, the circulation loop of container, circulating pump and floating cuvette composition benzethonium chloride solution, ultraviolet source are used for flowing colorimetric
Benzethonium chloride solution in ware is irradiated, and ultraviolet specrophotometer is used to obtain the suction of benzethonium chloride solution in floating cuvette
Luminosity comprising following steps:
Non-woven fabrics and benzethonium chloride solution are poured into container；
Start circulating pump, so that benzethonium chloride solution circulates between container and floating cuvette；
Starting ultraviolet source is irradiated the benzethonium chloride solution in floating cuvette；
Absorbance value A of the benzethonium chloride solution in initial concentration is measured using ultraviolet specrophotometer0And benzethonium chloride
Absorbance value A of the solution in time tt；
Show that non-woven fabrics is to the adsorbance Q of benzethonium chloride in time t using adsorbance calculation formulat, adsorbance calculating
Formula is as follows:
In formula: A0For benzethonium chloride solution initial concentration absorbance value；AtFor benzethonium chloride solution time t suction
Shading value；V is benzethonium chloride liquor capacity, unit L；S is nonwoven cloth area, unit m2；
Non-woven fabrics is finally calculated in time t to the rate of adsorption q of benzethonium chloridet,
In formula: qtFor in time t, for non-woven fabrics to the rate of adsorption of benzethonium chloride, T is detection interval time, unit s.
From the foregoing, it will be observed that the present invention is made up of the circulation loop of benzethonium chloride solution container, circulating pump and floating cuvette
It realizes that solution circulation is closed circuit, to guarantee that total liquid measure and benzethonium chloride content are constant in whole system, then utilizes ultraviolet spectrometry
Photometer can with the detection of precise and high efficiency time t benzethonium chloride absorbance value, to accurately determine non-woven fabrics to benzyl rope
The rate of adsorption of oronain has the characteristics that easy to operate and accuracy is high.
As an improvement of the present invention, the circulating pump is peristaltic pump.
As an improvement of the present invention, the specific mistake of the step " pouring into non-woven fabrics and benzethonium chloride solution in container "
Journey are as follows: first benzethonium chloride solution is poured into container, then non-woven fabrics is added to benzethonium chloride solution.
As an improvement of the present invention, the benzethonium chloride content in the benzethonium chloride solution is greater than non-woven fabrics to benzyl rope
The adsorption saturation amount of oronain.
Further, the wavelength of the purple light light source is 269nm.
Compared with prior art, the innovative point of technical solution of the present invention and beneficial effect are:
The present invention realizes that solution follows by the circulation loop that container, circulating pump and floating cuvette form benzethonium chloride solution
Ring is closed circuit, then can be with using ultraviolet specrophotometer to guarantee that total liquid measure and benzethonium chloride content are constant in whole system
The detection of precise and high efficiency time t benzethonium chloride absorbance value, to accurately determine absorption of the non-woven fabrics to benzethonium chloride
Rate has the characteristics that easy to operate and accuracy is high.
Detailed description of the invention
Fig. 1 is flow chart of the present invention measurement non-woven fabrics to the method for the benzethonium chloride rate of adsorption；
Fig. 2 is the schematic diagram of absorbance measuring device of the present invention；
Fig. 3 is the variation schematic diagram of benzethonium chloride solution absorbance value when non-woven fabrics is mixed with benzethonium chloride solution；
Fig. 4 is the ultra-violet absorption spectrum of benzethonium chloride solution.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.It is understood that tool described herein
Body embodiment is used only for explaining the present invention rather than limiting the invention.It also should be noted that for the ease of retouching
It states, only some but not all contents related to the present invention are shown in the drawings.
Embodiment
Fig. 1 and Fig. 2 are please referred to, a method of measurement non-woven fabrics measures the benzethonium chloride rate of adsorption, including absorbance
Device, absorbance measuring device include container 10, circulating pump 20, floating cuvette 30, ultraviolet source 40 and uv-spectrophotometric
Meter 50, container 10 form benzethonium chloride solution for holding benzethonium chloride solution, container 10, circulating pump 20 and floating cuvette 30
Circulation loop, ultraviolet source 40 is for being irradiated the benzethonium chloride solution in floating cuvette 30, uv-spectrophotometric
Meter 50 is for obtaining the absorbance of benzethonium chloride solution in floating cuvette 30；
Itself the following steps are included:
S1. non-woven fabrics and benzethonium chloride solution are poured into container；
S2. start circulating pump, so that benzethonium chloride solution circulates between container and floating cuvette；
S3. starting ultraviolet source is irradiated the benzethonium chloride solution in floating cuvette；
S4. absorbance value A of the benzethonium chloride solution in initial concentration is measured using ultraviolet specrophotometer0With benzyl rope chlorine
Absorbance value A of the ammonium salt solution in time tt；
S5. show that non-woven fabrics is to the adsorbance Q of benzethonium chloride in time t using adsorbance calculation formulat, adsorb meter
It is as follows to calculate formula:
In formula: A0For benzethonium chloride solution initial concentration absorbance value；AtFor benzethonium chloride solution time t suction
Shading value；V is benzethonium chloride liquor capacity, unit L；S is nonwoven cloth area, unit m2；
S6. non-woven fabrics is finally calculated in time t to the rate of adsorption q of benzethonium chloridet,
In formula: qtFor in time t, for non-woven fabrics to the rate of adsorption of benzethonium chloride, T is detection interval time, unit s.
From the foregoing, it will be observed that the present invention is made up of the circulation loop of benzethonium chloride solution container, circulating pump and floating cuvette
It realizes that solution circulation is closed circuit, to guarantee that total liquid measure and benzethonium chloride content are constant in whole system, then utilizes ultraviolet spectrometry
Photometer can with the detection of precise and high efficiency time t benzethonium chloride absorbance value, to accurately determine non-woven fabrics to benzyl rope
The rate of adsorption of oronain has the characteristics that easy to operate and accuracy is high.
In the present embodiment, the circulating pump is peristaltic pump.Peristaltic pump has many advantages, such as that precision height and control performance are good, has
Conducive to raising measurement effect.
In the present embodiment, non-woven fabrics and benzethonium chloride solution " are poured into container " detailed process by the step are as follows: first
Benzethonium chloride solution is poured into container, then non-woven fabrics is added to benzethonium chloride solution.Benzethonium chloride solution and non-woven fabrics are successive
It is added, non-woven fabrics is avoided to absorb benzethonium chloride in advance.
In the present embodiment, the benzethonium chloride content in the benzethonium chloride solution is greater than suction of the non-woven fabrics to benzethonium chloride
Attached saturation capacity.The absorbance value of benzethonium chloride solution is with adsorption time when being mixed by non-woven fabrics in Fig. 3 with benzethonium chloride solution
As a result it can be seen that, before time 400s, the increase at any time of solution benzethonium chloride absorbance value and rapid decrease, according to material
Conserva-tion principle, part benzethonium chloride is transferred on solid phase non-woven fabrics in solution, and is adsorbed on the benzethonium chloride on non-woven fabrics and is contained
Amount increases increase with time；After adsorption time 400s, benzethonium chloride absorbance value is slowly reduced and is tended to be steady, i.e. nonwoven
Cloth gradually decreases the rate of adsorption of benzethonium chloride and progressivelyes reach adsorption saturation balance, therefore, the benzyl in benzethonium chloride solution
Rope oronain content has to be larger than non-woven fabrics to the adsorption saturation amount of benzethonium chloride, just can guarantee and obtains entire absorption rate variation
Data.
In the present embodiment, the wavelength of the purple light light source is 269nm.By the UV absorption of benzethonium chloride solution in Fig. 4
Spectrum can be seen that benzethonium chloride existing characteristics absorption peak obtained the maximum absorption at wave crest 269nm, therefore, can be by wavelength
The concentration of benzethonium chloride, can improve the precision of measurement in the absorbance value detection solution of 269nm light source.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (5)
1. a kind of measurement non-woven fabrics is to the method for the benzethonium chloride rate of adsorption, it is characterised in that: including absorbance measuring device, inhale
Photometric measuring apparatus includes container, circulating pump, floating cuvette, ultraviolet source and ultraviolet specrophotometer, and container is for holding
Benzethonium chloride solution, container, circulating pump and floating cuvette composition benzethonium chloride solution circulation loop, ultraviolet source for pair
Benzethonium chloride solution in floating cuvette is irradiated, and ultraviolet specrophotometer is for obtaining benzethonium chloride in floating cuvette
The absorbance of solution comprising following steps:
Non-woven fabrics and benzethonium chloride solution are poured into container；
Start circulating pump, so that benzethonium chloride solution circulates between container and floating cuvette；
Starting ultraviolet source is irradiated the benzethonium chloride solution in floating cuvette；
Absorbance value A of the benzethonium chloride solution in initial concentration is measured using ultraviolet specrophotometer0Exist with benzethonium chloride solution
The absorbance value A of time tt；
Show that non-woven fabrics is to the adsorbance Q of benzethonium chloride in time t using adsorbance calculation formulat, adsorbance calculation formula is such as
Under:
In formula: A0For benzethonium chloride solution initial concentration absorbance value；AtFor benzethonium chloride solution time t absorbance
Value；V is benzethonium chloride liquor capacity, unit L；S is nonwoven cloth area, unit m2；
Non-woven fabrics is finally calculated in time t to the rate of adsorption q of benzethonium chloridet,
In formula: qtFor in time t non-woven fabrics to the rate of adsorption of benzethonium chloride；T is detection interval time, unit s.
2. measurement non-woven fabrics according to claim 1 is to the method for the benzethonium chloride rate of adsorption, it is characterised in that: described to follow
Ring pump is peristaltic pump.
3. measurement non-woven fabrics according to claim 1 is to the method for the benzethonium chloride rate of adsorption, it is characterised in that: the step
Non-woven fabrics and benzethonium chloride solution " are poured into container to " detailed process suddenly are as follows: first benzethonium chloride solution is poured into container, then
Non-woven fabrics is added to benzethonium chloride solution.
4. measurement non-woven fabrics according to claim 1 is to the method for the benzethonium chloride rate of adsorption, it is characterised in that: the benzyl
Benzethonium chloride content in rope chlorine ammonium salt solution is greater than non-woven fabrics to the adsorption saturation amount of benzethonium chloride.
5. measurement non-woven fabrics according to claim 1 is to the method for the benzethonium chloride rate of adsorption, it is characterised in that: the purple
The wavelength of radiant is 269nm.
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