CN105548166A - OPA (o-phthalaldehyde) disinfector concentration range detection test paper - Google Patents
OPA (o-phthalaldehyde) disinfector concentration range detection test paper Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Abstract
The invention provides test paper for detecting the concentration range of an OPA (o-phthalaldehyde) disinfector. The test paper is manufactured from paper pulp subjected to oxidative modification, and the surface carboxyl group content of the paper pulp is controlled by adjusting modification conditions. The paper is processed step by step through a solution containing sodium sulfite and phenolphthalein, is dried and sheared, and is adhered to a baseplate to obtain the test paper. In a test, after contacting the disinfector for 90 seconds, the test paper becomes red uniformly, indicating that the concentration of OPA reaches a set value of the test paper, otherwise, the test paper does not change color uniformly or is colorless. According to the test paper, the surface carboxyl group content of fiber is controlled by modification of the paper pulp, and then a test card sensitive to different concentration ranges can be manufactured; color development is controlled by fiber modification and is more uniform and stable compared with color development obtained by controlling composition and concentration of a soak solution, thereby meeting the requirement of controlling the concentration of the OPA disinfector used for disinfecting medical instruments. The test paper is simple in operation, can ensure accurate results, and can be used for quickly and intuitively evaluating the disinfecting situation of the disinfector.
Description
Technical field
The present invention relates to field of chemical detection, be specifically related to the test paper of o-phthalaldehyde(OPA) content detection in o-phthalaldehyde(OPA) (OPA) sanitizer.
Background technology
Chemicals for killing bacterium is called sanitizer, and o-phthalaldehyde(OPA) is the high-level chemosterilant of new research and development both at home and abroad, and U.S. FDA approval in 1999 uses.For ensureing the effect of sterilization, require that in sanitizer, O-phthalic aldehyde concentration should be greater than 0.3%, in actual applications, should the conventional concentration range detecting o-phthalaldehyde(OPA) in sanitizer fast, avoid causing concentration to decline owing to depositing or extending service time and losing efficacy.
Current o-phthalaldehyde(OPA) content detection mainly contains titrimetry, ultraviolet spectrophotometry and high performance liquid chromatography.Titrimetry uses for reference the titration method of inspection of the middle glutaraldehyde of Ministry of Public Health's " disinfection technology standard " and China's " pharmacopeia ", and the method need prepare multiple standard solution, complex steps, consuming time and need professional and technical personnel to complete.Ultraviolet-visible spectrophotometry and red, orange, green, blue, yellow (ROGBY), can direct sample analysis, but these two kinds of analytical approachs all need the operating personnel of large-scale instrument and equipment and specialty.
For ensureing the bactericidal effect of sanitizer, simple and rapid method need be adopted to judge the concentration range of o-phthalaldehyde(OPA) in sanitizer.Once had the report of glutaraldehyde concentration testing card, its test philosophy is that glutaraldehyde and sodium sulphite and amino acid react and generates yellow substance, but certain customers think that aberration should not be distinguished, and may cause erroneous judgement.
Summary of the invention
The present invention is based on aldehyde radical to react with sodium sulphite and generate NaOH, NaOH makes system alkalescence raise, and makes phenolphthalein indicator become redness from colourless, by introducing the quantity of carboxyl on paper pulp fiber, hierarchy of control alkalescence raises, and distinguishes aldehyde concentration scope in reactant sanitizer.Reaction equation is as follows:
R-CHO+Na
2SO
3+2H
2O
RCH(SO
3Na)OH+NaOH
Thus, the invention provides a kind of preparation technology of aldehyde disinfectant Concentration Testing test paper, and using method.
First, the invention provides a kind of preparation method of aldehyde disinfectant concentration validation checking test paper, it comprises the steps:
One, element chlorine free bleaching softwood kraft pulp first adopts 2, and 2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, wherein NaClO addition 0.5-4.5mmol/g;
Two, filter, by the pulp separation after oxidation modification;
Three, be washed with water to neutrality, copy paper processed for subsequent use, preferably copy and make 100g/m
2;
Four, soak: preparation 10-30% sodium sulfite solution also mixes with 0.5-2% phenolphthalein ethanol solution and is made into mother liquor as soak solution.5-30 minute in above-mentioned solution is soaked in by copying the paper made;
Five, paper is taken out, dry (being preferably normal-temperature vacuum) and get final product.
Six, further, also comprise paper trimmer and be fixed on viscose glue on the ground that do not absorb water, deoxidation is sealed up for safekeeping for subsequent use.
The preferred mode of the first step is modified condition: the concentration 1% of slurry, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 0.8mmol/g, thinks that oxidation reaction completes when pH value no longer reduces.
The 4th corresponding step, soak solution is preparation 10% sodium sulfite solution, and mixes with 1% phenolphthalein ethanol solution and be made into mother liquor.
Which can detect: O-phthalaldehyde disinfectant critical concentration 0.2%, exceedes this critical value and test paper namely can be made evenly to redden.Redden when concentration is less than 0.2% uneven or nondiscolouring.
Second preferred mode is modified condition: the concentration 1% of slurry, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 2.5mmol/g, thinks that oxidation reaction completes when pH value no longer reduces.
The 4th corresponding step, soak solution is preparation 15% sodium sulfite solution, and mixes with 1% phenolphthalein ethanol solution and be made into mother liquor.
Which can detect: O-phthalaldehyde disinfectant critical concentration 0.3%, exceedes this critical value and test paper namely can be made evenly to redden.Redden when concentration is less than 0.3% uneven or nondiscolouring.
3rd preferred mode is modified condition: element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 3.1mmol/g, thinks that oxidation reaction completes when pH value no longer reduces.
The 4th corresponding step, soak solution is preparation 20% sodium sulfite solution, and mixes with 2% phenolphthalein ethanol solution and be made into mother liquor.
Which can detect: O-phthalaldehyde disinfectant critical concentration 0.5%, exceedes this critical value and test paper namely can be made evenly to redden.Redden when concentration is less than 0.5% uneven or nondiscolouring.
4th preferred mode is modified condition: element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 4.0mmol/g, thinks that oxidation reaction completes when pH value no longer reduces.
The 4th corresponding step, soak solution is preparation 30% sodium sulfite solution, and mixes with 2% phenolphthalein ethanol solution and be made into mother liquor.
Which can detect: O-phthalaldehyde disinfectant critical concentration 0.8%, exceedes this critical value and test paper namely can be made evenly to redden.Redden when concentration is less than 0.8% uneven or nondiscolouring.
Secondly, the present invention also provides the method for aldehyde content in above-mentioned test paper test disinfectant, specific as follows:
One, cancel toxic agent, adjustment pH is 6.5-7.5, puts into test paper prepared by the present invention;
Two, take out after making the complete submergence of test paper keep 2-4 second, leave standstill (preferred 60-90 second), observe the change of test paper color;
Three, judge whether aldehyde content meets calibration value according to the color change of test paper;
If test paper evenly reddens, in sanitizer, concentration of aldehyde species meets sign requirement, if redden uneven or nondiscolouring, in sanitizer, aldehyde concentration is less than sign value (namely above-mentioned critical value).
The invention has the advantages that: this test paper controls fiber surface carboxyl-content by pulp modifying, can obtain the test card to variable concentrations range-sensitive; Test paper of the present invention controls colour developing by fibre modification, develops the color more uniform and stable than control soak solution composition and concentration.Test paper of the present invention is easy and simple to handle, and results contrast is accurate, can meet to O-phthalaldehyde disinfectant concentration control overflow in medical apparatus sterilizing, and to operator without special technical requirement, the sterilization conditions of the assessment sanitizer of energy quicklook.
Embodiment
Embodiment 1: O-phthalaldehyde disinfectant concentration range Test paper, concentration is set as 0.2%.
Pulp modifying
Element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: the concentration 1%, 2,2 of slurry, 6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 0.8mmol/g, thinks that when pH value no longer reduces oxidation reaction completes, and filters the pulp separation after by oxidation, and spend deionized water to neutral, copy and make 100g/m
2paper is for subsequent use.
Soak solution is prepared:
Accurate preparation 10% sodium sulfite solution, and mix with 1% phenolphthalein ethanol solution and be made into mother liquor.
Prepared by test paper:
Taking-up in 10 minutes in above-mentioned solution is soaked in by copying the paper made, normal-temperature vacuum is dry, and shear and be fixed on viscose glue on the ground that do not absorb water, ground is white plastic sheet, can obtain the O-phthalaldehyde disinfectant concentration range mensuration test paper that critical concentration is 0.2% like this, deoxidation is sealed up for safekeeping for subsequent use.
Test paper uses:
Get O-phthalaldehyde disinfectant and be about 30ml, adjustment pH is 6.5-7.5, put into test paper prepared by the present invention, take out after making the complete submergence of test paper keep 2 seconds, by test paper and paper handkerchief perpendicular contact, suck remaining liquid, level is placed on paper handkerchief 60-90 second, observes the change of test paper color, adopts the test of concentration known O-phthalaldehyde disinfectant to show, when concentration is greater than 0.2%, test paper evenly reddens, and redden when concentration is less than 0.3% uneven or nondiscolouring.
Embodiment 2: O-phthalaldehyde disinfectant concentration range Test paper, concentration is set as 0.3%.
Pulp modifying
Element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 2.5mmol/g, thinks that when pH value no longer reduces oxidation reaction completes, and filters the pulp separation after by oxidation, and spend deionized water to neutral, copy and make 100g/m
2paper is for subsequent use.
Soak solution is prepared:
Accurate preparation 15% sodium sulfite solution, and mix with 1% phenolphthalein ethanol solution and be made into mother liquor.
Prepared by test paper:
Taking-up in 10 minutes in above-mentioned solution is soaked in by copying the paper made, normal-temperature vacuum is dry, and shear and be fixed on viscose glue on the ground that do not absorb water, ground is white plastic sheet, can obtain the O-phthalaldehyde disinfectant concentration range mensuration test paper that critical concentration is 0.3% like this, deoxidation is sealed up for safekeeping for subsequent use.
Test paper uses:
Get O-phthalaldehyde disinfectant and be about 30ml, adjustment pH is 6.5-7.5, put into test paper prepared by the present invention, take out after making the complete submergence of test paper keep 2 seconds, by test paper and paper handkerchief perpendicular contact, suck remaining liquid, level is placed on paper handkerchief 60-90 second, observes the change of test paper color, adopts the test of concentration known O-phthalaldehyde disinfectant to show, when concentration is greater than 0.3%, test paper evenly reddens, and redden when concentration is less than 0.3% uneven or nondiscolouring.
Embodiment 3: O-phthalaldehyde disinfectant concentration range Test paper, concentration is set as 0.5%.
Pulp modifying
Element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 3.1mmol/g, thinks that when pH value no longer reduces oxidation reaction completes, and filters the pulp separation after by oxidation, and spend deionized water to neutral, copy and make 100g/m
2paper is for subsequent use.
Soak solution is prepared:
Accurate preparation 20% sodium sulfite solution, and mix with 2% phenolphthalein ethanol solution and be made into mother liquor.
Prepared by test paper:
Taking-up in 10 minutes in above-mentioned solution is soaked in by copying the paper made, normal-temperature vacuum is dry, and shear and be fixed on viscose glue on the ground that do not absorb water, ground is white plastic sheet, can obtain the O-phthalaldehyde disinfectant concentration range mensuration test paper that critical concentration is 0.5% like this, deoxidation is sealed up for safekeeping for subsequent use.
Test paper uses:
Get O-phthalaldehyde disinfectant and be about 30ml, adjustment pH is 6.5-7.5, put into test paper prepared by the present invention, take out after making the complete submergence of test paper keep 2 seconds, by test paper and paper handkerchief perpendicular contact, suck remaining liquid, level is placed on paper handkerchief 60-90 second, observes the change of test paper color, adopts the test of concentration known O-phthalaldehyde disinfectant to show, when concentration is greater than 0.5%, test paper evenly reddens, and redden when concentration is less than 0.5% uneven or nondiscolouring.
Embodiment 4: O-phthalaldehyde disinfectant concentration range Test paper, concentration is set as 0.8%.
Pulp modifying
Element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 4.0mmol/g, thinks that when pH value no longer reduces oxidation reaction completes, and filters the pulp separation after by oxidation, and spend deionized water to neutral, copy and make 100g/m
2paper is for subsequent use.
Soak solution is prepared:
Accurate preparation 30% sodium sulfite solution, and mix with 2% phenolphthalein ethanol solution and be made into mother liquor.
Prepared by test paper:
Taking-up in 10 minutes in above-mentioned solution is soaked in by copying the paper made, normal-temperature vacuum is dry, and shear and be fixed on viscose glue on the ground that do not absorb water, ground is white plastic sheet, can obtain the O-phthalaldehyde disinfectant concentration range mensuration test paper that critical concentration is 0.8% like this, deoxidation is sealed up for safekeeping for subsequent use.
Test paper uses:
Get O-phthalaldehyde disinfectant and be about 30ml, adjustment pH is 6.5-7.5, put into test paper prepared by the present invention, take out after making the complete submergence of test paper keep 2 seconds, by test paper and paper handkerchief perpendicular contact, suck remaining liquid, level is placed on paper handkerchief 60-90 second, observes the change of test paper color, adopts the test of concentration known O-phthalaldehyde disinfectant to show, when concentration is greater than 0.8%, test paper evenly reddens, and redden when concentration is less than 0.8% uneven or nondiscolouring.
Claims (10)
1. a preparation method for aldehyde disinfectant concentration validation checking test paper, is characterized in that, comprise the steps:
One, adopt 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO carry out oxidation modification to element chlorine free bleaching softwood kraft pulp, wherein NaClO addition 0.5-4.5mmol/g;
Two, filter, by the pulp separation after oxidation modification;
Three, wash element chlorine free bleaching softwood kraft pulp with water to neutral, copy paper processed for subsequent use;
Four, preparing sodium sulfite solution and mix with phenolphthalein ethanol solution and be made into mother liquor as soak solution, being soaked in above-mentioned solution by copying the paper made;
Five, take out paper, be drying to obtain.
2. preparation method as claimed in claim 1, is characterized in that: further, and also comprise paper trimmer and be fixed on viscose glue on the ground that do not absorb water, deoxidation is sealed up for safekeeping for subsequent use.
3. preparation method as claimed in claim 1, is characterized in that: it is 100g/m that the 3rd step copies paper processed
2; 5-30 minute in above-mentioned solution is soaked in by copying the paper made in 4th step; The drying of the 5th step is that normal-temperature vacuum is dry.
4. preparation method as claimed in claim 1, is characterized in that: prepare 10-30% sodium sulfite solution in the 4th step and mix with 0.5-2% phenolphthalein ethanol solution and be made into mother liquor as soak solution.
5. preparation method as claimed in claim 4, it is characterized in that: the modified condition in the first step is: the concentration 1% of slurry, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature reaction, system pH is 10-11, NaClO addition 0.8mmol/g, thinks that when pH value no longer reduces oxidation reaction completes.
6. the preparation method as described in any one of Claims 1-4, is characterized in that:
Modified condition in the first step is: the concentration 1%, 2,2,6 of slurry, 6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature reaction, system pH is 10-11, NaClO addition 0.8mmol/g, thinks that oxidation reaction completes when pH value no longer reduces;
And in the 4th step, soak solution is preparation 10% sodium sulfite solution, and mixes with 1% phenolphthalein ethanol solution and be made into mother liquor.
7. the preparation method as described in any one of Claims 1-4, is characterized in that:
Modified condition in the first step is: the concentration 1% of slurry, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 2.5mmol/g, thinks that oxidation reaction completes when pH value no longer reduces;
And in the 4th step, soak solution is preparation 15% sodium sulfite solution, and mixes with 1% phenolphthalein ethanol solution and be made into mother liquor.
8. the preparation method as described in any one of Claims 1-4, is characterized in that:
Modified condition in the first step is: element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 3.1mmol/g, thinks that oxidation reaction completes when pH value no longer reduces;
And in the 4th step, soak solution is preparation 20% sodium sulfite solution, and mixes with 2% phenolphthalein ethanol solution and be made into mother liquor.
9. the preparation method as described in any one of Claims 1-4, is characterized in that:
Modified condition in the first step is: element chlorine free bleaching softwood kraft pulp first adopts 2,2,6,6-tetramethylpiperidone-1-oxygen radical, NaBr and NaClO oxidation modification, modified condition is: starch dense 1%, 2,2,6,6-tetramethylpiperidone-1-oxygen radical 0.1mmol/g, NaBr1mmol/g, room temperature (15-25 DEG C) is reacted, system pH is 10-11, NaClO addition 4.0mmol/g, thinks that oxidation reaction completes when pH value no longer reduces;
And in the 4th step, soak solution is preparation 30% sodium sulfite solution, and mixes with 2% phenolphthalein ethanol solution and be made into mother liquor.
10. in the test paper test disinfectant adopting any one of claim 1 to 9 preparation method to obtain, the method for aldehyde content, is characterized in that, comprise the steps:
One, cancel toxic agent, adjustment pH is 6.5-7.5, puts into the test paper that any one of claim 1 to 11 preparation method obtains;
Two, take out after making the complete submergence of test paper keep 2-4 second, leave standstill (preferred 60-90 second), observation test paper color changes;
Three, judge whether aldehyde content meets calibration value according to the color change of test paper.
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| CN106323966A (en) * | 2016-10-31 | 2017-01-11 | 百奥森（江苏）食品安全科技有限公司 | Detection paper for disinfector residue and preparation method thereof |
| CN106872459A (en) * | 2017-03-06 | 2017-06-20 | 亳州市新健康科技有限公司 | A kind of OPA thimerosal and Concentration Testing test paper and manufacture craft |
| CN106970078A (en) * | 2017-05-15 | 2017-07-21 | 北京长江脉医药科技有限责任公司 | A kind of test paper and its preparation and detection method for detecting OPA |
| CN106970075A (en) * | 2017-03-20 | 2017-07-21 | 广西庆荣卫生消毒制品有限公司 | A kind of OPA Concentration Testing test paper and preparation method thereof |
| CN107449743A (en) * | 2016-05-18 | 2017-12-08 | 伊西康公司 | Measure the apparatus and method of the concentration of the disinfectant in medical treatment device secondary treatment system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107449743A (en) * | 2016-05-18 | 2017-12-08 | 伊西康公司 | Measure the apparatus and method of the concentration of the disinfectant in medical treatment device secondary treatment system |
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| CN106970075A (en) * | 2017-03-20 | 2017-07-21 | 广西庆荣卫生消毒制品有限公司 | A kind of OPA Concentration Testing test paper and preparation method thereof |
| CN106970078A (en) * | 2017-05-15 | 2017-07-21 | 北京长江脉医药科技有限责任公司 | A kind of test paper and its preparation and detection method for detecting OPA |
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| Publication number | Publication date |
|---|---|
| CN105548166B (en) | 2020-08-07 |
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