CN1159580A - Preparation method for ammonium indicator paper - Google Patents
Preparation method for ammonium indicator paper Download PDFInfo
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- CN1159580A CN1159580A CN 96122593 CN96122593A CN1159580A CN 1159580 A CN1159580 A CN 1159580A CN 96122593 CN96122593 CN 96122593 CN 96122593 A CN96122593 A CN 96122593A CN 1159580 A CN1159580 A CN 1159580A
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- filter paper
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- potassium iodide
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Abstract
The present invention belongs to a chemical test paper for detecting ammonium ion concentration. Said invented test paper is made of filter paper immersed with potassium iodide, mercuric iodide and sodium hydroxide, and the filter paper per sq.cm contains potassium iodide 0.65-6.6mg, mercuric iodide 0.80-7.5mg and sodium hydroxide 0-0.35mg. Its test condition is simple, cost is low, so that said invented product test paper can be extensively used for measuring ammonium contents of various smaples, such as chemical fertilizer, soil, nutrient liquor and sewage, etc.
Description
The invention belongs to chemical test paper, specifically detect the ammonium chemistry test paper of ammonium 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; K.R.Middleton, J.Appl.Chem., p 281-286,10, July, 1960) in the detection method of relevant ammonium ion of report gravimetric method, volumetric method, spectrophotometric method, colourimetry 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, detect a sample that contains ammonium ion and 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 a kind of detection easy, quick, that expense is low and contain sample ammonium indicator paper of ammonium ion and preparation method thereof.
Ammonium indicator paper of the present invention is to be made of the filter paper that has flooded potassium iodide, mercuric iodixde and NaOH, contains potassium iodide 0.65-6.6 milligram in each square centimeter filter paper, mercuric iodixde 0.80-7.5 milligram and NaOH 0-0.35 gram.Used filter paper can be 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.
The preparation of ammonium indicator paper of the present invention is carried out according to the following steps:
1. reagent preparation solution gets and analyzes pure or chemical pure potassium iodide, mercuric iodixde and NaOH, is dissolved in that to be mixed with concentration in the distilled water be every milliliter of solution that contains potassium iodide 42-420 milligram, mercuric iodixde 56-570 milligram and NaOH 0-25 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 that soaks after the suction, at room temperature dry, or dry being lower than under 60 ℃ the temperature, be cut into small pieces this ammonium indicator paper (16-400 square millimeter): stick with glue plastics hardboard one end at strip, promptly make the ammonium indicator paper bar.
The using method of ammonium indicator paper is as follows: ammonium indicator paper is immersed in the solution (alkali concn is the 2-3 molar sodium hydroxide) of the sample that contains ammonium ion, 1-2 takes out after second, after 1 minute.The color that is shown on this test paper is compared with standard color card, can declare on the concentration test paper of knowing contained ammonium ion in the sample and show color, along with the increase of ammonium concentration, apparent color adds gradually from yellow and is deep to brown.
The method for production of standard color card is: what take by weighing that sodium hydroxide solution that ammonium chloride (analyze pure, 105 ℃ of oven dry) is dissolved in the 2-3 volumetric molar concentration disposes a series of accurate concentration contains ammonium ion (can be converted into nitrogen) solution, contains from 0 to 1.0 milligram of nitrogen/milliliter of nitrogen concentration.Ammonium indicator paper is immersed respectively in the solution of each accurate concentration, 1-2 takes out after second, treats to record tristimulus values with spectrophotometer or photoelectric integration colour photometer after 2-3 minute.Modulate printing ink, be applied on art paper or the single gummed paper by this value, promptly make standard color card.Each concentration of ammonium ion (or nitrogen) is corresponding to a kind of color on the standard color card.
The present invention compared with prior art, the advantage that has is: the content of the reagent on the ammonium indicator paper (potassium iodide, mercuric iodixde and NaOH) is only surveyed one tens to several percent of ammonium 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 ammonium concentration with the present invention is very easy, quick, by the just concentration of contained ammonium ion in the decidable sample of the ammonium indicator paper after the visual relatively colour developing and the color on the standard color card.Amateur analyst also can test, and also need not carry out in special laboratory.The present invention is safe and reliable, be widely used, can be used for measuring various nitrogenous fertilizer, soil, crops hydroponics nutrient solution, various ammonium (nitrogen) content that contains in ammonium salt solution and the sewage, and table 1 is the comparison of measuring nitrogenous sample and standard method measurement result with ammonium indicator paper.
Outstanding substantive distinguishing features of the present invention and progress can be embodied in the following embodiments, but they do not impose any restrictions the present invention.
Embodiment 1.
Preparation contains the solution that potassium iodide and mercuric iodixde concentration are respectively 42 and 56 mg/ml, qualitative analysis was all immersed in this solution 30 seconds with filter paper, taking out the back dries in 50 ℃ baking oven, be cut into 10 * 5 square millimeters fritter again, promptly make contain potassium iodide, mercuric iodixde is respectively 0.65,0.80 milligram/centimetre
2Ammonium indicator paper.Stick at plastics hardboard bar one end.With ammonium indicator paper one end of this strip, immerse in the tested ammonium phosphate chemical fertilizer sample solution, 1-2 takes out after second, it is compared with standard color card after spending 1 minute, records that ammonium content is 8.0 (N%) in the sample.Use again and record with quadrat method that ammonium content is 40 (N%) in the urea sample.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 ammonium indicator paper and using method are with embodiment 1, just potassium iodide, mercuric iodixde and concentration sodium hydroxide are respectively 86,115 and 22 mg/ml in institute's obtain solution, contain potassium iodide, mercuric iodixde and NaOH in the gained ammonium indicator paper and are respectively 1.1,1.5 and 0.30 milligrams/centimetre
2, be used for surveying ammonium nitrate (ammonium nitrogen) fertilizer sample, recording its ammonium content is 16 (N%); Measure the Diammonium phosphate (DAP) sample, recording its ammonium content is 16 (N%), sees Table 1 with the result's contrast that records with standard method.
Embodiment 3.
The preparation process of ammonium indicator paper and using method are with embodiment 1, and just potassium iodide and mercuric iodixde and concentration sodium hydroxide are respectively 420,570 and 25 mg/ml in institute's obtain solution, contain potassium iodide and mercuric iodixde and NaOH in the gained ammonium indicator paper respectively
It is 6.6,7.5 and 0.35 milligrams/centimetre
2, being used for measuring the ammonium content in the calcium superphosphate chemical fertilizer sample, the result is used for measuring the ammonium content in the monoammonium phosphate chemical fertilizer sample for being 0 (N%), and the result is 12 (N%).See Table 1 with the result's contrast that records with standard method:
| Sample title (chemical fertilizer) | Measurement results (N%) | |
| Standard (GB857-88) method ammonium indicator paper method | ||
| Ammonium phosphate | ????6.49 | ????8.0 |
| Urea | ????46.69 | ????40 |
| Ammonium nitrate (ammonium nitrogen) | ????17.66 | ????16 |
| Diammonium phosphate (DAP) | ????18.22 | ????16 |
| Calcium superphosphate | ????0.57 | ????0 |
| Monoammonium phosphate | ????12.52 | ????12 |
Claims (3)
1. an ammonium indicator paper is characterized in that it being that it is made of the filter paper that has flooded potassium iodide, mercuric iodixde and NaOH, at each square
Contain potassium iodide 0.65-6.6 milligram, mercuric iodixde 0.80-7.5 milligram and NaOH 0-0.35 milligram in centimetre filter paper,
2. ammonium indicator paper according to claim 1 is characterized in that used filter paper is common filter paper or qualitative branch filter paper or fixed
The blank sheet of paper of filter paper or other suctions is used in component analysis with filter paper or chromatographic analysis.
3. method for preparing the described ammonium 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 potassium iodide, mercuric iodixde and NaOH, be dissolved in be mixed with in the distilled water dense
Degree is every milliliter of solution that contains potassium iodide 42-420 milligram, mercuric iodixde 56-570 milligram and NaOH 0-25 milligram;
2. dipping, with filter paper (common filter paper or qualitative analysis with filter paper or quantitative test with filter paper or chromatographic analysis with filter paper,
Or the blank sheet of paper of other suctions) all immerses in 1. the solution about 30 seconds kinds;
3. be shaped, take out the test paper that soaks after the suction, at room temperature dry, or dry being lower than under 60 ℃ the temperature, this ammonium indicator paper is cut into
Fritter (16-400 square millimeter) sticks with glue plastics hardboard one end at strip, promptly makes the change that detects ammonium concentration
Learn test strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96122593 CN1044743C (en) | 1996-11-15 | 1996-11-15 | Preparation method for ammonium indicator paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96122593 CN1044743C (en) | 1996-11-15 | 1996-11-15 | Preparation method for ammonium indicator paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1159580A true CN1159580A (en) | 1997-09-17 |
| CN1044743C CN1044743C (en) | 1999-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96122593 Expired - Fee Related CN1044743C (en) | 1996-11-15 | 1996-11-15 | Preparation method for ammonium indicator paper |
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| Country | Link |
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| CN (1) | CN1044743C (en) |
Cited By (3)
| 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 |
| CN102033063A (en) * | 2010-10-28 | 2011-04-27 | 上海绿帝环保科技有限公司 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
| CN108072652A (en) * | 2016-11-28 | 2018-05-25 | 上海泓宝绿色水产股份有限公司 | A kind of ammonia nitrogen detecting system and its application method for being used to detect that ammonia nitrogen concentration is 0.5-6mg/L |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304835C (en) * | 2004-07-06 | 2007-03-14 | 陕西科技大学 | Method for rapid detection of ammonium salts in fresh milk |
-
1996
- 1996-11-15 CN CN 96122593 patent/CN1044743C/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN102033063A (en) * | 2010-10-28 | 2011-04-27 | 上海绿帝环保科技有限公司 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
| CN108072652A (en) * | 2016-11-28 | 2018-05-25 | 上海泓宝绿色水产股份有限公司 | A kind of ammonia nitrogen detecting system and its application method for being used to detect that ammonia nitrogen concentration is 0.5-6mg/L |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044743C (en) | 1999-08-18 |
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