PL114675B2 - Indicator for detection and semi-quantitative determination of peroxides,especially hydrogen peroxide - Google Patents
Indicator for detection and semi-quantitative determination of peroxides,especially hydrogen peroxide Download PDFInfo
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- PL114675B2 PL114675B2 PL20887978A PL20887978A PL114675B2 PL 114675 B2 PL114675 B2 PL 114675B2 PL 20887978 A PL20887978 A PL 20887978A PL 20887978 A PL20887978 A PL 20887978A PL 114675 B2 PL114675 B2 PL 114675B2
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- Prior art keywords
- indicator
- peroxides
- hydrogen peroxide
- semi
- detection
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 14
- 150000002978 peroxides Chemical class 0.000 title claims description 8
- 238000001514 detection method Methods 0.000 title claims description 5
- 239000000203 mixture Substances 0.000 claims description 14
- 239000004202 carbamide Substances 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000003599 detergent Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 6
- -1 anionic ion Chemical class 0.000 claims description 5
- 239000000872 buffer Substances 0.000 claims description 5
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 5
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 3
- 150000001869 cobalt compounds Chemical class 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229940037001 sodium edetate Drugs 0.000 claims description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 241000208202 Linaceae Species 0.000 claims 1
- 239000000243 solution Substances 0.000 description 11
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- UDJZTGMLYITLIQ-UHFFFAOYSA-N 1-ethenylpyrrolidine Chemical compound C=CN1CCCC1 UDJZTGMLYITLIQ-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Polymers CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 241000206672 Gelidium Species 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000010419 agar Nutrition 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229940044175 cobalt sulfate Drugs 0.000 description 2
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000011684 sodium molybdate Substances 0.000 description 2
- 235000015393 sodium molybdate Nutrition 0.000 description 2
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 description 1
- KJWMCPYEODZESQ-UHFFFAOYSA-N 4-Dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=C(O)C=C1 KJWMCPYEODZESQ-UHFFFAOYSA-N 0.000 description 1
- 244000215068 Acacia senegal Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 102000003992 Peroxidases Human genes 0.000 description 1
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229940009662 edetate Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 230000006203 ethylation Effects 0.000 description 1
- 238000006200 ethylation reaction Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 108040007629 peroxidase activity proteins Proteins 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
Przedmiotem wynalazkujest wskaznik do wykrywania i póilosciowego oznaczania nadtlenków, a zwlaszcza nadtlenku wodoru.Znana jest kompozycja do oznaczania nadtlenku wodoru skladajaca sie z ortotolidyny lub 2,7-dwuamino- fluorenu, jodku potasowego, molibdenianu sodu i bulom o pH 5*2. Inna znana kompozycja zawiera zam¬ iast jodku potasowego i molibdenianu sodu peroksydaze czyli enzym katalizujacy reakcje nadtlenku wodoru z barwnikiem. Kompozycje te sa czule na obecnosc innych utleniaczy zatem wymagaja stosowania srodków masku¬ jacych oraz koniecznejestpozbywanie sieinnych utlenia¬ czy aby sie nimi poslugiwac.Wskaznik wedlug wynalazku do wykrywania i póilos¬ ciowego oznaczania nadtlenków, a zwfaszcza nadtlenku wodoru, zawiera kompozycje o skfadzie w procentach wagowych 3-26% zwiazków kobaltu, 10-62% werse- nianu sodowego, 3-55% buforu o pH^ 10,5-15% poli¬ meru ochronnego w postaci folii oraz korzystnie 0,01-0,5% detergenta niejonowego, 1-3% mocznika i 1-5% tiosiarczanu sodu. Kompozycja naniesionajest na materiale hydrofilowym lub wymieniaczu jonowym anionoczynnym takim jak: potikondensat tioureidowy, Dowex N/CH3A, Wofatyt SBW (sulfoguanidynowo- mocznikowy) Jako material hydrofilowy stosuje sie: bibule, wlókna celulozowe, lniane, bawelniane, welniane, lignine, gabke naturalna i poliuretanowa, zel krzemionkowy.Polimer ochronny jest to trudnoprzepuszczalny dla skladników atmosfery polimer, który w zetknieciu zwod¬ nymi roztworami ulega rozpuszczeniu i podczas magazy¬ nowania wskazników chroni je przed dzialaniem czynników atmosferycznych. Przyktadem takiego poli¬ meru jest: winylo-pirolidyna, rozpuszczalne w wodzie pochodne celulozy (metyloceluloza, etyloceluloza, hyd- roksyceluloza). rozpuszczalne w wodzie poliakryloa- mid, alkohol poliwinylowy, zelatyna, agar-agar. guma arabska, polioctan celulozy, polioctan winylu.W obecnosci kationów tworzacych z anionem werse- nianowym barwne kompleksy o trwalosci wiekszej od kompleksu Co—wersenian, wkskaznikiem wedlug wynalazku moznasie poslugiwacpod warunkiem usunie¬ cia tych kationów z roztworu na zasadzie reakcji wytra¬ cania lub za pomoca wymieniacza jonowego. Do tych kationów naleza Fe*\ CrH, Ni2*.Kompozycja charakteryzuje sie dobra rozdzielczoscia barwy, szczególnie przy wyzszych stezeniach nadtlenków oraz duza odpornoscia na inne utleniacze, na przykfed: nadmanganian, chromian, bromian, chloran, nadsiar¬ czan. Wskaznikiem mozna oznaczac0,3 do 100mg H2O* w dm\ poslugujac sie nim identycznie, jak papierkiem lakmusowym.Opisanym wskaznikiem mozna oznaczyc nadtlenki w obecnosci utleniaczy pod warunkiem usuniecia nadtlen¬ ków z roztworu np. przez destylacje, mikrodyfuzje Wtedy natlenia oznacza sie trzymajac wskaznik w prze- strzeni nad roztworem.Przyklad I. Bibule nasycono roztworem zawieraja¬ cym 3% siarczanu kobaltu 10% werenianu sodowego. 35r buforu weglanowego o pH=12,9, 0,01% detergentu ¦*,l 114 473 4 dodecyiofenvlopoliokyetylouancgo. 3% tiosiarczanu sodu. Bibule po wysuszeniu pokryto blona uzyskana przez zanurzenie bibuly do 5% roztworu wodnego alko¬ holu poliwinylowego.Za pomoca tego wskaznika oznaczono 0,5 mg HjO, w dm3 próbki.Przyklad II. Bibule nasycono roztworem zawieraja¬ cym 6% siarczanu kobaltu. 62% werscnianu sodowego, 35% buforu boraksowego o pH= 10, 0,01% dodecylofe- nolu polioksyetylowanego o liczbie etoksylowania rów¬ nej 14 jako detergentu niejonowego, 15% winylopiroli- dyny, 1% mocznika.Za pomoca tego wskaznika oznaczono 10 mg nadtlenku kumenu w ldm* próbki.Przyklad Ill. Wymieniacz jonowy (sulfoguanidy- nowomocznikowy) osadzony w bibule nasycono roztwo¬ rem zawierajacym 26% azotanu kobaltu, 36% wersenia- nu sodowego, 15% buforu fosforanowego o pH= 12,9. 3% mocznika. 0,5% dodecylofenolu polioksyetylowa¬ nego o liczbie etyIowania równej 14jako detergentu nie¬ jonowego. Po wysuszeniu kompozycje na bibule zabezpieczono warstwa ochronna przez impregnowanie 5°! roztworem polioctanu winylowego w acetonie.Za pomoca tego wskaznika oznaczono 20 mg H£2 w ldm3 próbki.Przyklad IV. Wskaznik jak w przykladzie I z ta róznica, ze nie zawiera ani detergentu niejonowego, ani tiosiarczanu sodów ego.Oznaczono 50 mg BaO: próbki.Przyklad V. Wskaznik jak w przykladzie III z ta róznica, ze nie zawiera mocznika. Oznaczono 80mg nad¬ tlenku mocznika w ldml próbki.Prz klad VI. Postepowano identycznie jak * przy- kkdziel. z ta róznica ze zamiast bibuly uzyto plócien¬ nego paska. Pasek nasycony roztworem, wysuszono i pokryto blona wodnego 1% roztworu winylopirolidyny.Prz klad VII. Postepowano identycznie jak wprzy¬ kladzie II, z ta róznica ze zamiast bibuly uzyto paska z gabki poliuretanowej, który nasycono roztworem zawie¬ rajacym zamiast 15% winylopirolidyny-5% zelatyny.Przyklad VIII. Postepowano identycznie jak w przykfadzie III, z ta róznica, ze zamiast wymieniacza jonowego sulfoguanidynowo-mocznikowego uzyto zelu krzemionkowego osadzonego na bibule. Po wysuszeniu kompozycje zabezpieczono warstwe ochronna 5% roz¬ tworu agar-agaru.Zastrzezenia patentowe 1. Wskaznik do wykrywania i pólilosciowego ozna¬ czania nadltenków a zwlaszcza nadtlenku wodoru, Tiumirwy tym, ze zawiera kompozycje o skladzie w pro¬ centach wagowych 3-26% zwiazków kobaltu. 10-62% wersenianu sodowego, 3-55% buforu o pH^ 10.5-i5% polimeru trudnoprzepuszczalnego dla skladników atmo¬ sfery i rozpuszczalnego w wodnych roztworach, w postaci folii, przy czym kompozycja naniesiona jest na materiale hydrofilowym. lub wymieniaczu jonowym anionoczynnym. 2. Wskaznik wedlug zastrz. I. znamienny tym. ze zawiera 0,01-0.5% detergenta niejonowego. 3. Wskaznik wedlug zastrz. 1. albo 2. znamieany tym. ze zawiera 1-5% tiosiarczanu sodu. 4. Wskaznik wedlug zastrz. 1 albo 2. zaamieaay tym. ze zawiera 1-3% mocznika. h-lisr I P-PRI. Vikfci.l I20l-»/. len.; jiisi <\ PLThe subject of the present invention is an indicator for the detection and semi-quantitative determination of peroxides, especially hydrogen peroxide. There is a known composition for the determination of hydrogen peroxide consisting of orthotolidine or 2,7-diamine-fluorene, potassium iodide, sodium molybdate and bulbs with a pH of 5 * 2. Another known composition comprises, instead of potassium iodide and sodium molybdate, peroxidase, an enzyme catalyzing the reactions of hydrogen peroxide with the dye. These compositions are sensitive to the presence of other oxidants and therefore require the use of masking agents, and it is necessary to remove other oxidants in order to handle them. The indicator according to the invention for the detection and semi-quantitative determination of peroxides, and especially hydrogen peroxide, contains compositions with a percentage by weight 3-26% cobalt compounds, 10-62% sodium versetate, 3-55% buffer with a pH of? 10.5-15% protective polymer in the form of a film and preferably 0.01-0.5% non-ionic detergent, 1-3% urea and 1-5% sodium thiosulfate. The composition is applied on a hydrophilic material or an anionic ion exchanger, such as: thioureide poticondensate, Dowex N / CH3A, SBW (sulfoguanidine-urea) vofatite. , silica gel. A protective polymer is a polymer that is hardly permeable to atmospheric components, which dissolves in contact with aqueous solutions and protects them against the effects of weathering during the storage of the indicators. An example of such a polymer is: vinyl-pyrrolidine, water-soluble cellulose derivatives (methylcellulose, ethylcellulose, hydroxycellulose). water-soluble polyacrylamide, polyvinyl alcohol, gelatin, agar-agar. gum arabic, cellulose polyacetate, polyvinyl acetate. In the presence of cations forming colored complexes with the versate anion, with a stability greater than that of the Co-edetate complex, the indicator according to the invention may be used under the condition of removing these cations from the solution by means of a reduction or deposition reaction. using an ion exchanger. These cations include Fe *, CrH, Ni2 *. The composition is characterized by good color resolution, especially at higher peroxide concentrations, and high resistance to other oxidants, for example: permanganate, chromate, bromate, chlorate, persulfate. The indicator can be used to measure 0.3 to 100 mg of H2O * in dm \ using it in the same way as a litmus paper. The indicator can be used to determine peroxides in the presence of oxidants, provided that peroxides are removed from the solution, e.g. by distillation, microdiffusion, then oxygenation means follow the indicator in above the solution. Example 1 The blotters were saturated with a solution containing 3% cobalt sulfate and 10% sodium vernate. 35r of carbonate buffer with pH = 12.9, 0.01% detergent ¦ *, 1 114 473 4 dodecylphenol polyoxyethylated. 3% sodium thiosulfate. After drying, the blotters were covered with a membrane obtained by dipping the blotting paper into a 5% aqueous solution of polyvinyl alcohol. 0.5 mg of HjO was determined in dm3 of the sample with this indicator. Example II. The blotters were saturated with a solution containing 6% cobalt sulfate. 62% sodium versate, 35% borax buffer at pH = 10, 0.01% polyoxyethylated dodecylphenol with an ethoxylation number of 14 as a non-ionic detergent, 15% vinylpyrrolidine, 1% urea. 10 mg was determined using this index. cumene peroxide in ldm * sample. Example Ill. The ion exchanger (sulfoguanide urea) embedded in the filter paper was saturated with a solution containing 26% cobalt nitrate, 36% sodium edetate, 15% phosphate buffer, pH = 12.9. 3% urea. 0.5% of a polyoxyethylated dodecylphenol with an ethylation number of 14 as a non-ionic detergent. After drying, the blotting compositions were protected with a 5 ° protective layer! solution of polyvinylacetate in acetone. This indicator was used to determine 20 mg H 2 in 1 dm3 of the sample. Example IV. Indicator as in example I with the difference that it contains neither non-ionic detergent nor sodium thiosulphate. 50 mg BaO determined: samples. Example V. Indicator as in example III except that it does not contain urea. 80 mg of urea peroxide in 1 ml of sample was determined. For clade VI. The same procedure was followed as * assign. with the difference that instead of blotting paper, a linen strip was used. The strip is saturated with the solution, dried and covered with a film of an aqueous 1% solution of vinylpyrrolidine. For clade VII. The procedure was identical to that of Example II, except that a strip of polyurethane sponge was used instead of blotting paper, which was impregnated with a solution containing 15% vinylpyrrolidine-5% gelatin instead. Example VIII. The procedure was identical to that in example III, with the difference that instead of the sulfoguanide urea ion exchanger, silica gel deposited on a filter was used. After drying, the compositions were protected with a protective layer of a 5% agar-agar solution. Patent Claims 1. Indicator for the detection and semi-quantitative determination of peroxides, especially hydrogen peroxide, Tyumen in that it contains compositions with a composition of 3-26% by weight. cobalt compounds. 10-62% sodium edetate, 3-55% buffer with a pH? 10.5-15% of a polymer that is difficult to penetrate to atmospheric components and soluble in aqueous solutions, in the form of a film, the composition being applied to a hydrophilic material. or an anionic ion exchanger. 2. The indicator according to claims I. characterized by this. that it contains 0.01-0.5% of non-ionic detergent. 3. Indicator according to claims 1st or 2nd signs of this. that it contains 1-5% sodium thiosulfate. 4. The indicator according to claims 1 or 2 was a blast. that it contains 1-3% urea. h-lisr and P-PRI. Vikfci.l I20l - »/. flax.; jiisi <\ PL
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL20887978A PL114675B2 (en) | 1978-08-03 | 1978-08-03 | Indicator for detection and semi-quantitative determination of peroxides,especially hydrogen peroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL20887978A PL114675B2 (en) | 1978-08-03 | 1978-08-03 | Indicator for detection and semi-quantitative determination of peroxides,especially hydrogen peroxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL208879A1 PL208879A1 (en) | 1979-07-02 |
| PL114675B2 true PL114675B2 (en) | 1981-02-28 |
Family
ID=19990939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL20887978A PL114675B2 (en) | 1978-08-03 | 1978-08-03 | Indicator for detection and semi-quantitative determination of peroxides,especially hydrogen peroxide |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL114675B2 (en) |
-
1978
- 1978-08-03 PL PL20887978A patent/PL114675B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL208879A1 (en) | 1979-07-02 |
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