CN1044744C - Preparation method for phosphorus indicator paper - Google Patents
Preparation method for phosphorus indicator paper Download PDFInfo
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- CN1044744C CN1044744C CN 96122595 CN96122595A CN1044744C CN 1044744 C CN1044744 C CN 1044744C CN 96122595 CN96122595 CN 96122595 CN 96122595 A CN96122595 A CN 96122595A CN 1044744 C CN1044744 C CN 1044744C
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- paper
- filter paper
- phosphorus
- ammonium
- ammonium molybdate
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Abstract
The present invention belongs to chemical test paper for detecting the concentration of phosphate radical ions, which is prepared by that filter paper is immersed in ammonium vanadate and ammonium molybdate solution, wherein the filter paper of each square centimeter contains 0.12 to 1.2 mg of ammonium vanadate and 2.3 to 15 mg of ammonium molybdate. Compared with other methods for detecting the concentration of phosphorous ions, the method reduces the reagent content by dozens of times to hundreds of times, and the detection condition is simple; thus, the present invention used for detecting the concentration of phosphate radical ions in samples has the advantages of simplicity, convenience, rapidness and low cost and can be operated by non-specialized persons. The present invention can be widely used for detecting the phosphorus content in various samples such as chemical fertilizer, soil, nutrient solution, water, etc.
Description
The invention belongs to chemical test paper, specifically detect the phosphorus chemistry test paper of phosphorus acid ion concentration.
Existing document (is compiled " chemical fertilizer check ", China Financial ﹠ Economic Publishing, 1976 as the commodity inspection group; Shaanxi analytical chemistry teaching and research room of department of chemistry of Normal University, " agriculture chemistry common analysis ", Shaanxi science and technology publishing house, 1980; Z. Ma Qinke, " spectrophotometric method of element ", Geology Publishing House, 1983; Odd.B.Michelsen, Anal.Chem., 29 (1), 60-, 1957) in the detection method of relevant phosphate anion of report gravimetric method, volumetric method, spectrophotometric method, visual colorimetry etc. are arranged.All these methods must be carried out with various chemical wares, instrument and reagent by the specialty analysis personnel in that chemical experiment is indoor, and the sample that detects a phosphorus-containing acid ion need spend several units to dozens of yuan, and detection speed is slow, and formality is numerous and diverse.
The purpose of this invention is to provide sample phosphorus indicator paper of a kind of easy, quick, detection phosphorus-containing acid ion that expense is low and preparation method thereof.
Phosphorus indicator paper of the present invention is to be made of the filter paper that has flooded ammonium vanadate and ammonium molybdate, contains ammonium vanadate 0.12-1.2 milligram in each square centimeter filter paper, ammonium molybdate 2.3-15 milligram.
Here the filter paper of usefulness can be filter paper or other suctions are used in common filter paper or quantitative test with filter paper or chromatographic analysis with filter paper or qualitative analysis blank sheet of paper.
Phosphorus indicator paper of the present invention is to make according to the following steps:
1. reagent preparation solution is got and is analyzed pure or chemical pure ammonium vanadate and ammonium molybdate, heating and be dissolved in that to be mixed with concentration in the distilled water be every milliliter of solution that contains ammonium vanadate 29-120 milligram, ammonium molybdate 230-1490 milligram.
2. dipping, all immerse filter paper (common filter paper or quantitative test with filter paper or qualitative analysis with filter paper or the chromatographic analysis blank sheet of paper with filter paper or other suctions) in the solution 1. about 30 seconds kinds:
3. be shaped, take out the test paper after dipping is inhaled, dry under the room temperature, this phosphorus indicator paper is cut into little fast (16-400 square millimeter): stick with glue plastics hardboard one end, promptly make the phosphorus indicator paper bar at strip.
The using method of phosphorus indicator paper is as follows: phosphorus indicator paper is immersed in the solution (containing 0.25～0.7 mol sulfuric acid) of the sample of phosphorus-containing acid ion, 1-2 takes out on the test paper of back and show color second, increase along with phosphorus acid ion concentration, apparent color add gradually from yellow and be deep to tawny: after 3 minutes the look that is shown on the test paper is compared with standard color card, can declare the concentration of knowing institute's phosphorus-containing acid ion in the sample rapidly.
The method for production of standard color card is: dispose phosphorous (can be converted into phosphorus pentoxide) solution of a series of accurate concentration, from 0 to 50 milligram of P of concentration with the sulfuric acid (analyzing pure) of potassium dihydrogen phosphate (analyzes pure, 100 ℃ of oven dry) and 0.25-0.7 mole
2O
5/ milliliter.Phosphorus indicator paper is immersed respectively in the solution of each accurate concentration, take out after 1～2 second, treat to record tristimulus values with spectrophotometer or photoelectric integration colour photometer after 3 minutes.This value of skill is modulated printing ink, is applied on art paper or the single gummed paper, promptly makes serial color from shallow to deep on the standard color card.
The present invention compared with prior art, the advantage that has is: the content of the reagent on the phosphorus indicator paper (ammonium vanadate and ammonium molybdate) is only surveyed one tens to several percent of phosphorus acid ion concentration method agents useful for same amount for other, it is simple relatively to test required condition, therefore greatly reduce testing expense, detect a sample and only need about 1 yuan.The operation that detects phosphorus acid ion concentration with the present invention is very easy, quick, by phosphorus indicator paper and the concentration that just can judge institute's phosphorus-containing acid ion in the sample more exactly of the color on the standard color card after the visual relatively colour developing.Amateur analyst also can test, and also need not carry out in special laboratory.The content that the present invention is safe and reliable, be widely used, can be used for surveying the phosphorus in phosphate fertilizer, phosphorous composite fertilizer, soil, natural water and the phosphorus-containing wastewater.The measurement result that table 1 is to use phosphorus indicator paper to measure phosphorous sample and standard method compares.
Outstanding substantive distinguishing features of the present invention and progress can be embodied from following embodiment, it must be noted that they are not that the present invention is imposed any restrictions.
Embodiment 1.
Preparation ammonium vanadate and ammonium molybdate concentration are respectively the solution of 66 and 500 mg/ml, common filter paper was all immersed in this solution 30 seconds, take out then, at room temperature dry, be cut into 10 * 5 square millimeters fritter again, promptly make and contain ammonium vanadate and ammonium molybdate is respectively 0.50 and 5.0 milligram/centimetre
2Phosphorus indicator paper stick at plastics hardboard bar one end.Get this phosphorus indicator paper bar, the phosphorus of this strip end of having a try is immersed in the tested ammonium phosphate chemical fertilizer sample solution, 1-2 takes out after second, it is compared with standard color card after spending 3 minutes, records that phosphorus content is 8 (P in this sample
2O
5%).Use again and record with quadrat method that phosphorus content is 40 (P in the Diammonium phosphate (DAP) chemical fertilizer sample
2O
5) %.Measured result is compared its result be more or less the same (seeing Table 1) with the result who records with standard method.
Embodiment 2.
The preparation process of phosphorus indicator paper and using method be with embodiment 1, and just the concentration of ammonium vanadate and ammonium molybdate is respectively 29 and 230 mg/ml in institute's obtain solution, and phosphorus indicator paper contains ammonium vanadate, ammonium molybdate 0.12 and 2.3 milligrams/centimetre respectively
2, be used for recording that phosphorus content is 40 (P in the calcium superphosphate chemical fertilizer sample
2O
5%), see Table 1 with the result's contrast that records with standard method.
Embodiment 3
The preparation process of phosphorus indicator paper and using method are with embodiment 1, just the concentration of ammonium vanadate and ammonium molybdate is respectively 120 and 1490 mg/ml in institute's obtain solution, contain ammonium vanadate and ammonium molybdate in the phosphorus indicator paper and be respectively 1.2 and 15 milli gram per square centimeters, be used for measuring monoammonium phosphate chemical fertilizer sample, recording phosphorus content is 40 (P
2O
5%), see Table 1 with the result's contrast that records with standard method:
| Sample title (chemical fertilizer) | Measurement results (P 2O 5％) | |
| Standard (ISO-6598-85) method | The phosphorus indicator paper method | |
| Ammonium phosphate | 7.64 | 8 |
| Diammonium phosphate (DAP) | 43.45 | 40 |
| Calcium superphosphate | 45.6 | 40 |
| Monoammonium phosphate | 37.87 | 40 |
Claims (3)
1. a phosphorus indicator paper is characterized in that it is to be made of the filter paper that has flooded ammonium vanadate and ammonium molybdate, contains ammonium vanadate 0.12-1.2 milligram and ammonium molybdate 2.3-15 milligram in each square centimeter filter paper.
2. phosphorus indicator paper according to claim 1 is characterized in that used filter paper is filter paper or other suctions are used in common filter paper or qualitative analysis with filter paper or chromatographic analysis with filter paper or quantitative test blank sheet of paper.
3. method for preparing the described phosphorus indicator paper of claim 1 is characterized in that it being to carry out as follows:
1. reagent preparation solution is got and is analyzed pure or chemical pure ammonium vanadate and ammonium molybdate, is dissolved in that to be mixed with concentration in the distilled water be every milliliter of solution that contains ammonium vanadate 29-120 milligram, ammonium molybdate 230-1490 milligram;
2. dipping all immerses filter paper (common filter paper or qualitative analysis with filter paper or quantitative test with filter paper or the chromatographic analysis blank sheet of paper with filter paper or other suctions) in the solution 1. about 30 seconds kinds;
3. be shaped, take out the test paper behind the dipping, at room temperature dry, be cut into fritter (16-400 square millimeter), this phosphorus indicator paper is sticked with glue plastics hardboard one end at strip, promptly make the phosphorus indicator paper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96122595 CN1044744C (en) | 1996-11-15 | 1996-11-15 | Preparation method for phosphorus indicator paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96122595 CN1044744C (en) | 1996-11-15 | 1996-11-15 | Preparation method for phosphorus indicator paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1159581A CN1159581A (en) | 1997-09-17 |
| CN1044744C true CN1044744C (en) | 1999-08-18 |
Family
ID=5127379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96122595 Expired - Fee Related CN1044744C (en) | 1996-11-15 | 1996-11-15 | Preparation method for phosphorus indicator paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044744C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313818C (en) * | 2004-07-26 | 2007-05-02 | 山西大学 | Method for detecting phosphate radical in urine |
| CN101813632A (en) * | 2010-04-02 | 2010-08-25 | 同济大学 | Preparation method of water quality phosphate color comparison detection card and application method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100988C (en) * | 1998-08-17 | 2003-02-05 | 中国科学院动物研究所 | Test paper for monitoring the resistance of pests to organophosphorus insecticide and its preparing process |
| CN109324042A (en) * | 2018-09-12 | 2019-02-12 | 盛世惠泽科技（天津）有限公司 | A kind of water quality total phosphorus detection kit |
-
1996
- 1996-11-15 CN CN 96122595 patent/CN1044744C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313818C (en) * | 2004-07-26 | 2007-05-02 | 山西大学 | Method for detecting phosphate radical in urine |
| CN101813632A (en) * | 2010-04-02 | 2010-08-25 | 同济大学 | Preparation method of water quality phosphate color comparison detection card and application method thereof |
| CN101813632B (en) * | 2010-04-02 | 2012-07-25 | 同济大学 | Preparation method of water quality phosphate color comparison detection card and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1159581A (en) | 1997-09-17 |
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