CN108072656A - A kind of water quality detection pH test paper and water quality detection method - Google Patents
A kind of water quality detection pH test paper and water quality detection method Download PDFInfo
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- CN108072656A CN108072656A CN201611064268.7A CN201611064268A CN108072656A CN 108072656 A CN108072656 A CN 108072656A CN 201611064268 A CN201611064268 A CN 201611064268A CN 108072656 A CN108072656 A CN 108072656A
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- test paper
- water quality
- quality detection
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- phenol red
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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
- G01N21/80—Indicating pH value
Abstract
The invention discloses a kind of water quality detection pH test paper and water quality detection methods.Water quality detection pH test paper by carrier impregnation pH colour reagents, is dried 10 40 minutes at 50 60 DEG C and is made；PH colour reagents are Bromothymol blue solution, the phenol red solution of 0.7 0.8g/L or the bromocresol green solution of 0.5 0.6g/L that concentration is 0.7 0.8g/L；Carrier is chromatograph test strip or chromatography filter paper item.The present invention be not required to special instrument water quality can be carried out it is quick, conveniently, accurate pH detect, detection range is wide；In the selection of detection basic moiety in the colour developing of alkaline section and Bromothymol blue and phenol red indicator that acidic moiety does not develop the color, in the selection of detection acidic moiety in the colour developing of acid section and bromocresol green indicator that alkaline section is not developed the color, make testing result more accurate；The phenol red pH test paper that a kind of colour reagent phenol red is made also is can use, pH is carried out and quantitatively detects.
Description
Technical field
The invention belongs to water quality inspection technique field, more particularly to a kind of water quality detection pH test paper and water quality detection method.
Background technology
With the improvement of people's life quality, in numerous areas such as drinking water, daily life water, Swimming pool water all
Water quality is monitored.In water quality monitoring, the detection of pH test paper is most convenient and most common.
Being widely used for pH test paper is general, and conveniently.The reaction principle of pH test paper is to be based on pH indicator methods, common
Typically contain methyl red [pH4.2 (red)~6.2 (Huang)] in pH analysis test papers, bromocresol green [pH3.6 (Huang)~5.4 (green)],
Bromothymol blue [6.0 (yellow)~7.6 (blueness)], cooperation can reflect pH4.5 to the acid-base indicator of these mixing in right amount
~9.0 range of variation.This common pH analysis test papers, detection range and accuracy are limited, and are in neutrality in detection pH
During neighbouring water quality, sensitivity is not high enough.
The Chinese patent of Patent No. 201310337607.4 discloses a kind of for detecting chlorine residue in water, pH value and total
The Test paper of basicity, it is mentioned that pH Test papers be made of pH value colour developing indicator paper block dipping pH value colour developing mixed liquor,
The pH value colour developing mixed liquid concentration is 2 phenol reds or Bromothymol blue that 0.01-1g/ rises and concentration is 0.1-10g/g's
The water of surfactant and the mixed liquor of alcohol, and pH value is is tested based on 3-9.The pH detection models of this Test paper
It encloses, accuracy and sensitivity are also than relatively limited.
The content of the invention
It is an object of the present invention to overcome the deficiencies of the prior art and provide a kind of water quality detection pH test paper.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of water quality detection pH test paper, it is made of carrier impregnation pH colour reagents, and the pH colour reagents are dense
Spending the Bromothymol blue solution for 0.7g/L-0.8g/L, the phenol red solution that concentration is 0.7g/L-0.8g/L or concentration is
The bromocresol green solution of 0.5g/L-0.6g/L；The carrier is chromatograph test strip or chromatography filter paper item.
Further, the pH colour reagents are the phenol red solution that concentration is 0.8g/L；The detection model of the pH test paper
It encloses for pH 4.0~10.0.
Further, the pH colour reagents are the Bromothymol blue solution that concentration is 0.8g/L；The pH test paper
Detection range is pH 6.0~10.0.
Further, the pH colour reagents are the bromocresol green solution that concentration is 0.6g/L；The detection of the pH test paper
Scope is pH 4.0~6.0.
Further, the pH test paper is by carrier impregnation pH colour reagents, and 10-40 points are then dried at 50-60 DEG C
Made of clock.
Further, the pH test paper is by carrier impregnation pH colour reagents, then dries 20 minutes and makes at 55 DEG C
Into.
A kind of water quality detection method using the progress of above-mentioned water quality detection pH test paper is as follows：By above-mentioned water quality detection pH test paper
The color shown after contacting water sample 5-15 minutes to be detected carries out color with standard coloration card and contrasts, obtains water to be detected
The pH value of sample.
In above-mentioned three kinds of pH colour reagents,
Bromocresol green PH color change intervals：4.0 (yellow)~6.0 (blue-green)
Phenol red PH color change intervals：4.0 (Huang)~10.0 (red)
Bromothymol blue PH color change intervals：6.0 (Huang)~10.0 (indigo plant)
For acidic sample, the pH colour reagents in the discoloration of 4.0~6.0 scopes of PH can be selected：Bromocresol green solution；It is right
In basic sample solution, the pH colour reagents in the discoloration of 6.0~10.0 scopes of PH can be selected：Bromothymol blue solution or phenol red
Solution；For acid or basic sample solution, the pH colour reagents in the discoloration of 4.0~10.0 scopes of PH can be selected：Phenol red solution.
Therefore, when carrying out water quality detection, preferred method is：For Acidic water, it is bromine first to select pH colour reagents
The pH test paper (bromocresol green pH test paper) of phenol green solution；For alkaline water quality, select pH colour reagents molten for Bromothymol blue
The pH test paper (Bromothymol blue pH test paper) of liquid or the pH test paper (phenol red pH test paper) of phenol red solution；For acid or alkali
Property water quality, select the pH test paper (phenol red pH test paper) that pH colour reagents are phenol red solution.
PH test paper (phenol red pH test paper) of the pH colour reagents for phenol red solution is used, it, can be to various with reference to chromatic value
The actual water sample of different quality carries out pH and quantitatively detects, and detection range is pH 4.0~10.0.
Beneficial effects of the present invention：
The water quality detection pH test paper of the present invention has the following advantages that：
1st, specialized instrument and equipment is not required, you can water quality is carried out it is quick, conveniently, accurate pH detects, and detects model
It encloses wider, pH 4.0~10.0 can be reached.
2nd, in the selection of detection basic moiety in the colour developing of alkaline section and the instruction of Bromothymol blue that acidic moiety does not develop the color
Agent and phenol red indicator, the selection of detection acidic moiety in the colour developing of acid section and bromocresol green that alkaline section is not developed the color refers to
Show agent, can so make testing result more accurate.
3rd, the optium concentration of each pH colour reagent is preferably gone out by experiment (optium concentration of Bromothymol blue solution is
0.7-0.8g/L, the optium concentration of phenol red solution are 0.7-0.8g/L, the optium concentration of bromocresol green solution is 0.5-0.6g/
L), make testing result more accurate, detection sensitivity higher.
4th, the phenol red pH test paper that can be made with a kind of colour reagent phenol red carries out pH and quantitatively detects, and detection range is wide,
PH 4.0~10.0 can be reached.
Specific embodiment
The present invention is further illustrated with reference to embodiments.
Embodiment 1
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 20 at 55 DEG C
Made of minute.The pH colour reagents are the phenol red solution that concentration is 0.8g/L；The detection range of the pH test paper is pH
4.0~10.0.The carrier is the chromatograph test strip that blotting paper H-5076 makes.
The pH test paper (phenol red pH test paper) of above-mentioned dipping phenol red solution is selected, pH can be carried out to acid or alkaline water quality
Value detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after five minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
Embodiment 2
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 20 at 55 DEG C
Made of minute.The pH colour reagents are the Bromothymol blue solution that concentration is 0.8g/L；The detection model of the pH test paper
It encloses for pH 6.0~10.0.The carrier is the chromatograph test strip that blotting paper H-5076 makes.
The pH test paper (Bromothymol blue pH test paper) of above-mentioned dipping Bromothymol blue solution is selected, it can be to neutral and alkali
Property water quality carry out pH value detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after five minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
Embodiment 3
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 20 at 55 DEG C
Made of minute.The pH colour reagents are the bromocresol green solution that concentration is 0.6g/L；The detection range of the pH test paper is
PH 4.0~6.0.The carrier is the chromatograph test strip that blotting paper H-5076 makes.
The pH test paper (bromocresol green pH test paper) of above-mentioned dipping bromocresol green solution is selected, pH value can be carried out to Acidic water
Detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after five minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
Embodiment 4
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 30 at 55 DEG C
Made of minute.The pH colour reagents are the phenol red solution that concentration is 0.7g/L；The detection range of the pH test paper is pH
4.0~10.0.The carrier is the chromatograph test strip that conventional absorbent paper paper H-5072 makes.
The pH test paper (phenol red pH test paper) of above-mentioned dipping phenol red solution is selected, pH can be carried out to acid or alkaline water quality
Value detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after ten minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
Embodiment 5
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 10 at 60 DEG C
Made of minute.The pH colour reagents are the Bromothymol blue solution that concentration is 0.7g/L；The detection model of the pH test paper
It encloses for pH 6.0~10.0.The carrier is the chromatograph test strip that conventional absorbent paper paper H-5072 makes.
The pH test paper (Bromothymol blue pH test paper) of above-mentioned dipping Bromothymol blue solution is selected, it can be to neutral and alkali
Property water quality carry out pH value detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after ten minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
Embodiment 6
A kind of water quality detection pH test paper of the present invention, it is by carrier impregnation pH colour reagents, then dries 40 at 50 DEG C
Made of minute.The pH colour reagents are the bromocresol green solution that concentration is 0.5g/L；The detection range of the pH test paper is
PH 4.0~6.0.The carrier is the chromatograph test strip that blotting paper H-5015 makes.
The pH test paper (bromocresol green pH test paper) of above-mentioned dipping bromocresol green solution is selected, pH value can be carried out to Acidic water
Detection.
The water quality detection method carried out using above-mentioned water quality detection pH test paper is as follows：Above-mentioned water quality detection pH test paper is contacted
The color that water sample to be detected is shown after 15 minutes carries out color with standard coloration card and contrasts, obtains the pH of water sample to be detected
Value.
7 actual water sample of embodiment detects (one)
Water sample to be detected is river water (water sample of refectory small korneforos), its actual pH is measured as 7.5 with acidometer.
The colour developing result immersed with the phenol red pH test paper of embodiment 1 after river water is orange red, compared with standard coloration card
After assert its pH between 7.0-8.0；
Colour developing result after immersing river water with the Bromothymol blue pH test paper of embodiment 2 is yellow more slightly pale blue
Assert its pH between 7.0-8.0 after color, with standard coloration card.
8 actual water sample of embodiment detects (two)
Water sample to be detected is mineral water, its actual pH is measured as 6.5 with acidometer.
Colour developing result after immersing mineral water with the Bromothymol blue pH test paper of embodiment 2 is yellow, with standard coloration
Assert its pH between 6.5-7.0 after card.
9 actual water sample of embodiment detects (three)
Water sample to be detected is distilled water, its actual pH is measured as 6.0 with acidometer.
Colour developing result after immersing distilled water with the bromocresol green pH test paper of embodiment 3 is navy blue, with standard coloration card
After assert its pH between 6.0-6.5.
Embodiment 10
PH test paper (phenol red pH test paper) of the pH colour reagents described in embodiment 1 for phenol red solution is used, to phosphorus
The standard buffer solution of sour disodium hydrogen and pH4~pH 10 of sodium dihydrogen phosphate configuration are detected experiment, and obtained colourity quantifies
As a result (i.e. chromatic value) is as follows：
The colourity quantitative result that the detection experiment of phenol red pH test paper obtains
PH test paper (phenol red pH test paper) of the pH colour reagents for phenol red solution is used, it, can be right with reference to above-mentioned chromatic value
The actual water sample of various different qualities carries out pH and quantitatively detects, and detection range is pH 4.0~10.0.
Claims (9)
1. a kind of water quality detection pH test paper, which is characterized in that it is the pH colour developings made of carrier impregnation pH colour reagents
Reagent be concentration be 0.7g/L-0.8g/L Bromothymol blue solution, concentration be 0.7g/L-0.8g/L phenol red solution or
Concentration is the bromocresol green solution of 0.5g/L-0.6g/L；The carrier is chromatograph test strip or chromatography filter paper item.
2. water quality detection pH test paper as described in claim 1, which is characterized in that the pH test paper is developed the color by carrier impregnation pH
Reagent is then dried at 50-60 DEG C made of 10-40 minutes.
3. water quality detection pH test paper as claimed in claim 1 or 2, which is characterized in that the pH colour reagents are that concentration is
The phenol red solution of 0.8g/L；The detection range of the pH test paper is pH 4.0~10.0.
4. water quality detection pH test paper as claimed in claim 1 or 2, which is characterized in that the pH colour reagents are that concentration is
The Bromothymol blue solution of 0.8g/L；The detection range of the pH test paper is pH 6.0~10.0.
5. water quality detection pH test paper as claimed in claim 1 or 2, which is characterized in that the pH colour reagents are that concentration is
The bromocresol green solution of 0.6g/L；The detection range of the pH test paper is pH 4.0~6.0.
6. water quality detection pH test paper as claimed in claim 2, which is characterized in that the pH test paper is developed the color by carrier impregnation pH
Reagent is then dried at 55 DEG C made of 20 minutes.
7. the water quality detection method that a kind of water quality detection pH test paper using as described in claim 1-6 is any carries out, feature
It is, the color shown after above-mentioned water quality detection pH test paper is contacted water sample 5-15 minutes to be detected, with standard coloration card
It carries out color to contrast, obtains the pH value of water sample to be detected.
8. water quality detection method as claimed in claim 7, which is characterized in that for Acidic water, selection pH colour reagents are
The pH test paper of bromocresol green solution；For alkaline water quality, select pH colour reagents molten for Bromothymol blue solution or phenol red
The pH test paper of liquid；For acid or alkaline water quality, the pH test paper that pH colour reagents are phenol red solution is selected.
9. water quality detection method as claimed in claim 7, which is characterized in that use pH of the pH colour reagents for phenol red solution
Test paper with reference to chromatic value, carries out pH and quantitatively detects, and detection range is pH 4.0~10.0.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540885A (en) * | 2018-11-30 | 2019-03-29 | 河北工程大学 | A kind of pH test paper and preparation method thereof |
| CN109632789A (en) * | 2018-12-24 | 2019-04-16 | 迪瑞医疗科技股份有限公司 | A kind of pH value drying chemical reagent paper and preparation method thereof |
| CN110455792A (en) * | 2019-08-21 | 2019-11-15 | 启盘科技发展(上海)有限公司 | Basicity concentration quick detection reagent and its detection method in a kind of water |
| CN111715312A (en) * | 2019-03-21 | 2020-09-29 | 首都师范大学 | Paper-based micro-fluidic chip for multi-parameter analysis of water quality detection and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540885A (en) * | 2018-11-30 | 2019-03-29 | 河北工程大学 | A kind of pH test paper and preparation method thereof |
| CN109632789A (en) * | 2018-12-24 | 2019-04-16 | 迪瑞医疗科技股份有限公司 | A kind of pH value drying chemical reagent paper and preparation method thereof |
| CN111715312A (en) * | 2019-03-21 | 2020-09-29 | 首都师范大学 | Paper-based micro-fluidic chip for multi-parameter analysis of water quality detection and manufacturing method thereof |
| CN110455792A (en) * | 2019-08-21 | 2019-11-15 | 启盘科技发展(上海)有限公司 | Basicity concentration quick detection reagent and its detection method in a kind of water |
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