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US-20260126395-A1 - Multifunctional Detection Test Paper and Preparing Method Thereof

US20260126395A1US 20260126395 A1US20260126395 A1US 20260126395A1US-20260126395-A1

Abstract

A multifunctional detection test paper includes a base and a plurality of test modules attached to the base. The base includes a base layer and a hydrophobic layer coated thereon, wherein the hydrophobic layer has a plurality of test zones spaced apart from each other. The test modules are provided on the test zones of the hydrophobic layer respectively to separate the test modules from the base layer, wherein each of the test modules includes a detection substance being configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine and water hardness when the test modules are immersed into water.

Inventors

  • Lili Yu
  • Kuizi Wang

Assignees

  • Lili Yu

Dates

Publication Date
20260507
Application Date
20251231

Claims (20)

  1. 1 . A method of testing water quality, comprising the following steps: immersing a plurality of test modules of a multifunctional detection test paper into water, each of the test modules being configured to detect at least one of a combination of pH, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine and water hardness; removing the multifunctional detection test paper from water and placing horizontally for a predetermined period; and comparing the colors of the test modules of the multifunctional detection test paper with a color reference.
  2. 2 . The method, as recited in claim 1 , further comprising a step of: preventing cross-contamination of colors between the respective test modules by using a hydrophobic layer as water flows along the multifunctional detection test paper to each of the test modules.
  3. 3 . The method, as recited in claim 2 , wherein the hydrophobic layer comprises an organosilicon compound which is selected from a group of silicon dioxide, dodecylsilane, tetradecylsilane, cetyltrimethoxysilane, octadecylsilane, dimethyloctadecylchlorosilane, and methacryloxypropylsilane.
  4. 4 . The method, as recited in claim 3 , wherein the hydrophobic layer comprises a modifying agent which is selected from a group of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, citric acid, and salicylic acid.
  5. 5 . The method, as recited in claim 4 , wherein the hydrophobic layer comprises a molding agent which is selected from a group of sodium hydroxide, lithium hydroxide, ammonia, sodium bicarbonate, sodium acetate, sodium citrate, and potassium citrate.
  6. 6 . The method, as recited in claim 1 , wherein the multifunctional detection test paper comprises: a base which comprises a base layer and a hydrophobic layer formed on a surface of the base layer, wherein the hydrophobic layer has a plurality of test zones spaced apart from each other; and the plurality of test modules provided on the test zones of the hydrophobic layer respectively to separate the test modules from the base layer.
  7. 7 . The method, as recited in claim 6 , wherein the hydrophobic layer is made of a coating solution which is a mixture of an organosilicon compound, a modifying agent and a molding agent; wherein the organosilicon compound is selected from a group of dodecylsilane, tetradecylsilane, cetyltrimethoxysilane, octadecylsilane, dimethyloctadecylchlorosilane, and methacryloxypropylsilane, wherein the modifying agent is selected from a group of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, citric acid, and salicylic acid; wherein the molding agent is selected from a group of sodium hydroxide, lithium hydroxide, ammonia, sodium bicarbonate, sodium acetate, sodium citrate, and potassium citrate.
  8. 8 . The method, as recited in claim 7 , wherein the base layer is made of Polyethylene Terephthalate.
  9. 9 . The method, as recited in claim 7 , wherein before coating, the base layer is preheated and then the coating solution of the hydrophobic layer is coated on the surface of the base layer.
  10. 10 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect free chlorine and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color developer, a buffer and a surfactant, wherein the color developer comprises one or more of DPD (N, N-diethyl-p-phenylenediamine), tetramethylbenzidine, syringaldehyde azine, and vanillin azine, wherein the buffer comprises one or more of citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TRIS, boric acid, borax and sodium hydroxide.
  11. 11 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect water hardness and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is formed by immersing the carrier in an immersing solution containing a color developer and a buffer, wherein the color developer comprises one or more of calcium magnesium reagent, chrome black T, calcium carboxylic acid, azo arsine 1, and azo arsine 3, wherein the buffer comprises one or more of citric acid, disodium EDTA, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TRIS, boric acid, borax, and sodium hydroxide.
  12. 12 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect pH value and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color developer and a surfactant, wherein the color developer comprises one or more of phenol red, sodium phenol red, bromocresol green, sodium bromocresol green, bromophenol blue, bromothymol blue, cresol red, sodium cresol red, and xylenol orange.
  13. 13 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect cyanuric acid and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color rendering agent, a surfactant and melamine, wherein the color rendering agent comprises one or more of phenol red, phenol red sodium, bromocresol green, bromocresol green sodium, bromophenol blue, bromocresol purple, bromothymol blue, cresol red, cresol red sodium, and dimethylphenol orange.
  14. 14 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect total alkalinity and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color rendering agent and a surfactant, wherein the color rendering agent comprises one or more of phenol red, phenol red sodium, bromocresol green, bromocresol green sodium, bromophenol blue, bromocresol purple, bromothymol blue, cresol red, cresol red sodium, and dimethylphenol orange.
  15. 15 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect total chlorine and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a buffer, a surfactant and a color developer, wherein the buffer comprises one or more of citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TBS, boric acid, borax, and sodium hydroxide, wherein the color developer comprises one or more of DPD (N, N-diethyl-p-phenylenediamine), tetramethylbenzidine, syringaldazine, and vanillin azine.
  16. 16 . The method, as recited in claim 1 , wherein one of the test modules is configured to detect bromine and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color developer, a buffer and a surfactant, wherein the color developer comprises one or more of DPD (N, N-diethyl-p-phenylenediamine), tetramethylbenzidine, syringaldehyde azine, and vanillin azine, wherein the buffer comprises one or more of citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TRIS, boric acid, borax and sodium hydroxide.
  17. 17 . The method, as recited in claim 7 , wherein one of the test modules is configured to detect cyanuric acid and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color rendering agent, a surfactant and melamine, wherein the color rendering agent comprises one or more of phenol red, phenol red sodium, bromocresol green, bromocresol green sodium, bromophenol blue, bromocresol purple, bromothymol blue, cresol red, cresol red sodium, and dimethylphenol orange.
  18. 18 . The method, as recited in claim 7 , wherein one of the test modules is configured to detect total alkalinity and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color rendering agent and a surfactant, wherein the color rendering agent comprises one or more of phenol red, phenol red sodium, bromocresol green, bromocresol green sodium, bromophenol blue, bromocresol purple, bromothymol blue, cresol red, cresol red sodium, and dimethylphenol orange.
  19. 19 . The method, as recited in claim 7 , wherein one of the test modules is configured to detect total chlorine and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a buffer, a surfactant and a color developer, wherein the buffer comprises one or more of citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TBS, boric acid, borax, and sodium hydroxide, wherein the color developer comprises one or more of DPD (N, N-diethyl-p-phenylenediamine), tetramethylbenzidine, syringaldazine, and vanillin azine.
  20. 20 . The method, as recited in claim 7 , wherein one of the test modules is configured to detect bromine and comprises a carrier attached onto one of the test zones of the hydrophobic layer, wherein the detection substance is provided on the carrier, wherein the detection substance comprises a mixture of a color developer, a buffer and a surfactant, wherein the color developer comprises one or more of DPD (N, N-diethyl-p-phenylenediamine), tetramethylbenzidine, syringaldehyde azine, and vanillin azine, wherein the buffer comprises one or more of citric acid, sodium citrate, disodium hydrogen phosphate, sodium dihydrogen phosphate, TRIS, boric acid, borax and sodium hydroxide.

Description

CROSS REFERENCE OF RELATED APPLICATION This is a Continuation Application that claims the benefit of priority under 35 U.S.C. § 120 to a non-provisional application, application number Ser. No. 18/957,829, filed date Nov. 24, 2024, which is a Continuation-In-Part application that claims the benefit of priority under 35 U.S.C. § 120 to a non-provisional application, application number 18/925094, filing date Oct. 24, 2024, which is a non-provisional application that claims priority under 35 U.S.C. § 119 to a China application number CN202410674568.5, filing date May 28, 2024; application number Ser. No. 18/957,829 is also a Continuation-In-Part application that claims the benefit of priority under 35 U.S.C. § 120 to a non-provisional application, application number 18/925089, filing date Oct. 24, 2024, which is a non-provisional application that claims priority under 35 U.S.C. § 119 to a China application number CN202410674575.5, filing date May 28, 2024; this application is also a non-provisional application that claims priority under 35 U.S.C. § 119 to China application number CN202410674559.6, filing date May 28, 2024, wherein the entire content of which is expressly incorporated herein by reference. BACKGROUND OF THE PRESENT INVENTION FIELD OF INVENTION The present invention relates to the field of water test paper, and more particular to a multifunctional detection test paper and preparing method thereof. DESCRIPTION OF RELATED ARTS Most of the tap water on the market currently uses chlorine for disinfection, but if the chlorine content in the water exceeds the standard, it will have serious consequences, such as: 1. Water with excessive chlorine content is very harmful to the human body, it will irritate the eyes, nose, throat respiratory tract, cause acute pulmonary edema, paralyze the nerves in the respiratory area when the concentration is high, and long-term inhalation of low-concentration chlorine will cause chronic poisoning; 2. Water with excessive chlorine content will destroy the vitamins, minerals and other nutrients in vegetables, fruits and grains, and seriously affect the absorption of nutrients by the human body; 3. Bathing with water with excessive chlorine content will cause itching in mild cases and increase the risk of cancer in severe cases; 4. After boiling water with excessive chlorine content, the organic humus in the water will produce carcinogens such as chloroform, and the carcinogens in the human body will increase; 5. Long-term drinking of water with excessive chlorine content will cause heart disease, coronary atherosclerosis, anemia, bladder cancer, liver cancer, rectal cancer, hypertension and allergy symptoms. Therefore, if users want to avoid using water with excessive chlorine content, they need to check the water to detect the chlorine content in the water. Therefore, there is an urgent need to provide a preparation method of a chlorine detection test paper and a chlorine detection test paper on the market to help users quickly and accurately detect the chlorine content in water. Currently, the water hardness value of water is different. We should also pay attention to it when choosing drinking water, because they have different effects on the health of our body. Hardness is an important monitoring indicator of water quality. The total hardness of water is about 8, which is more suitable. By monitoring the water hardness value, we can know whether it can be used in industrial production and daily life. For example, water with high hardness can cause soap precipitation and greatly reduce the effectiveness of detergents. In the textile industry, water with too high hardness makes textiles rough and difficult to dye; burning boilers is easy to block pipes and cause boiler explosion accidents; high-hardness water is hard to drink and has a bitter taste. After drinking, it even affects gastrointestinal function; feeding livestock can cause miscarriage in pregnant animals, etc. Since consumers need to frequently test the water hardness value of drinking water to know whether the drinking water used is beneficial to health, there is an urgent need to provide a water hardness test paper and its preparing method on the market for users to detect the water hardness value of drinking water. Currently, most tap water on the market uses chlorine for disinfection, but if the chlorine content in the water exceeds the standard, it will have serious consequences, such as: 1. Water with excessive chlorine content is very harmful to the human body and can irritate the eyes, nose, It can cause acute pulmonary edema in the throat and respiratory tract. When the concentration is high, it will paralyze the nerves in the respiratory area. Long-term inhalation of low-concentration chlorine will cause chronic poisoning; 2. Water with excessive chlorine content will destroy the vitamins, minerals and other nutrients in vegetables, fruits, and grains., seriously affecting the body's absorption of