CN106404767A - Cotton swab for fast determining whether total hardness of water reaches standard - Google Patents
Cotton swab for fast determining whether total hardness of water reaches standard Download PDFInfo
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- CN106404767A CN106404767A CN201610771982.3A CN201610771982A CN106404767A CN 106404767 A CN106404767 A CN 106404767A CN 201610771982 A CN201610771982 A CN 201610771982A CN 106404767 A CN106404767 A CN 106404767A
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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
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Abstract
The invention discloses a cotton swab for fast determining whether the total hardness of water reaches the standard. The cotton swab is made by 1) winding absorbent cotton round a plastic stick to prepare a cotton swab, soaking the cotton swab in water with hardness removed, taking the cotton swab out, throwing redundant water away, and soaking the obtained cotton swab in EDTA solutions with different concentrations to counteract the hardness interference; 2) adding a masking agent, an indicator, and a pH stabilizing agent in pure water to prepare a chromogenic base liquid for the cotton swab; and 3) putting the obtained cotton swab in the prepared chromogenic base liquid, performing soaking for 4-6 h, taking the obtained cotton swab out, and performing drying to obtain the cotton swab for fast determining whether the total hardness of water reaches the standard. The detection is high in sensitivity, good in stability, and simple to operate, and is economical and practical. Through the cotton swab, water can be fast detected and is determinate on site whether the total hardness of water reaches the standard, the response time is short, the detection speed is fast, and the test process is simple. The cotton swab is used for fast determining whether the total hardness of water, such as domestic drinking water, the source water of domestic drinking water, boiler water, mineral water, surface water, underground water, industrial water, and waste water, reaches the standard.
Description
Technical field
The present invention relates to chemical analysis field, specifically a kind of determining total hardness of water quick judgement swab stick up to standard.
Background technology
Water hardness is an important monitoring index of water quality, and water hardness is too high, can to health, daily life,
Commercial production etc. produces harm.
Industrial boiler water-supply hardness is typically the summation of calcium ion and magnesium ion that feeds water.It is that measurement boiler feedwater quality is good
A bad important technology index, it illustrates the number of scale forming matter in water.Boiler feedwater much higher hard, when boiler operatiopn one
After the section time, some hard solid state attachments will be generated on the tube wall that heating surface is contacted with water, these attachments are exactly water
Dirt, the heat conductivility of incrustation scale is poor, with steel, its heat conductivity thinks that ratio differs tens to hundred times, after gyp, meeting
So that tube wall temperature is raised because heat transfer is bad, when temperature exceedes tube wall permission temperature, bulge or booster, tube skin will be caused
Attachment also can result in the underdeposit corrosion of Boiler Metallic.If the solid matter separating out is in suspended state in boiler water,
Or be deposited at the sluggish flow of lower collecting box bottom, grain slag can be generated.In boiler water, grain slag is excessive, on the one hand can affect steam product
Matter, on the other hand meeting blocking pipeline, or even it is again converted into incrustation scale, its harm is very big.Therefore《Industrial Boiler water quality》
（GB/T1576）Requirement to steam boiler feed-water hardness is≤0.03mmol/L；Requirement to hot-water boiler feed-water hardness is
≤ 0.60mmol/L is to limit the generation of boiler scale.
《Boiler feed water and cooling water analysis method》（GB/T6909-2008）Regulation Hardness Determination method is with C.I. 14645.
Disodiumedetate for indicator（EDTA）Compleximetry.This method needs to prepare EDTA standard solution, C.I. 14645.
Indicator solution, ammonia-chlorination ammonia buffer, needs special assay laboratory and specialty analysis laboratory personnel it is impossible to realize
Field quick detection.Quick detection reagent on the market typically uses colorimetric card, judges concentration by comparing, there is detection limit for height
Problem cannot be used for the low concentration detection of 0.03mmol/L, data is difficult to accurately weigh.The present invention develops a kind of total hardness
Quick detection swab stick, when carrying out determining total hardness of water detection, only need to will take out after the 2-3 second in this detection swab stick immersion water sample, lead to
Cross the color change of swab stick, you can judge whether conformance with standard specifies feedwater quality hardness content, and whole detection process only needs to
10 seconds, process greatly simplified, and the Site Detection calibrating for feedwater quality total hardness has great significance.The present invention has inspection
Survey is accurate, easy to operate, resistance tocrocking is strong, has the advantages that scene is quick and judges whether determining total hardness of water is qualified, swab stick colour developing
For monochrome, the change according to color can determine that water hardness whether conformance with standard, and can be estimated according to the depth degree of change
The height of hardness content in water quality, this hardness determination swab stick can be widely available for Industrial Boiler water, the surface water and subsoil water
Hardness judge and measure, method is simple, directly perceived, swab stick preparation cost is low it is easy to long-time preserve, and is easy to carry, can carry out
On-site measurement.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of determining total hardness of water quick judgement cotton up to standard
Rod.
The technical scheme is that and be achieved in that：A kind of determining total hardness of water quick judgement swab stick up to standard, preparation method
For： 1）Absorbent cotton is wrapped on sticking plaster and makes swab stick, take out after swab stick is soaked in except hardness water and get rid of unnecessary water
Point, soak to the EDTA solution entering variable concentrations to offset the interference of its hardness；2）In pure water add screening agent, indicator,
PH stabilizer, makes the colour developing base fluid of detection swab stick；3）By swab stick to entering in the colour developing base fluid preparing, after soaking 4～6h
Take out, be dried, obtain determining total hardness of water quick judgement swab stick up to standard.
Further, described indicator is C.I. 14645., and pH stabilizer is pH7～11 Borax sodium hydroxide buffer solution,
Described screening agent is triethanolamine.
Further, in described colour developing base fluid, the content of C.I. 14645. is 1～5g/L；PH7～11 Borax sodium hydroxide delays
Rush content 4～40mL/100 mL of solution；The content of described triethanolamine is 10～50mL/L.
Further, the preferred content of described C.I. 14645. is 4～5g/L；Described pH7～11 Borax sodium hydroxide buffer is molten
The preferred content of liquid is 8～32mL/100mL.
Further, the content of described EDTA magnesium salt is 0.01～0.10mmol/L.
Determining total hardness of water quick detection whether up to standard：Determining total hardness of water is quickly measured swab stick and immerses in water sample to be measured,
Take out after rocking 2～3 seconds, after colour developing completely, whether the change being reddened by indigo plant occurs according to color, judges whether water quality is less than
The detection hardness that a certain standard specifies.
Beneficial effects of the present invention are：1）Detection sensitivity height of the present invention, good stability, easy and simple to handle, economical and practical；2）
Energy field quick detection of the present invention simultaneously judges whether determining total hardness of water meets respective standard and require, and response time is fast, test speed
Hurry up, test process is simple, without Other Instruments and accessory, accuracy of detection is high, whether up to standard can be applied to soft water quality
Detection；3）The method can be widely used in Drinking Water and its source water, boiler water, mineral water, surface water, subsoil water, industry
Quick mensure whether up to standard with determining total hardness of water such as water, waste water.
Specific embodiment
With reference to specific embodiment, explanation is further explained to the present invention.
Embodiment 1：The preparation of 0.03mmol/L quick detection swab stick：
Cotton Gossypii is carried out defat, then absorbent cotton is wrapped on sticking plaster makes swab stick.After swab stick is soaked in except hardness water
Take out to get rid of unnecessary moisture and be looped around absorbent cotton and mould on rod, to enter EDTA magnesium salt 0.01～0.05mmol/L except hardness water
Take out after middle immersion 24h and get rid of unnecessary moisture, then insert the 10mL/L of screening agent containing chromium with pure water configuration；C.I. 14645. 5g/L；
PH7～11 Borax --- take out after bubble 4～6h in sodium hydroxide buffer solution 4～10mL/100 mL mixed liquor, seal after 24h is dried
Dress, you can obtain the quick detection swab stick for determining total hardness of water 0.03mmol/L qualification determination.
Judge whether determining total hardness of water is less than the quick detection of 0.03mmol/L：
0.03mmol/L is quickly measured swab stick to immerse in water sample to be measured, take out after rocking 2～3 seconds, after colour developing completely, such as examine
Survey swab stick color not changing for blueness, illustrate that determining total hardness of water is less than 0.03mmol/L；As detected swab stick color by blueness
It is changed into red, illustrate that determining total hardness of water is more than 0.03mmol/L.
Embodiment 2：The preparation of 0.6mmol/L quick detection swab stick：
Cotton Gossypii is carried out defat, then absorbent cotton is wrapped in mould swab stick is made on axle.Take after swab stick is soaked in except hardness water
Go out to get rid of unnecessary moisture and be looped around absorbent cotton to mould on rod, to enter EDTA magnesium salt 0.05～0.10mmol/L except in hardness water
Take out after soaking 24h and get rid of unnecessary moisture, then insert 10mL/L containing screening agent, the C.I. 14645. 5g/L with pure water configuration；PH7～
11 Boraxs --- take out after bubble 4～6h in sodium hydroxide buffer solution 4～10mL/100 mL mixed liquor, 24h post package is dried, that is,
The quick detection swab stick for determining total hardness of water 0.6mmol/L qualification determination can be obtained.
Judge whether determining total hardness of water is less than the quick detection of 0.6mmol/L：
0.6mmol/L is quickly measured swab stick to immerse in water sample to be measured, take out after rocking 2～3 seconds, after colour developing completely, such as examine
Survey swab stick color not changing for blueness, illustrate that determining total hardness of water is less than 0.6mmol/L；As detected, swab stick color becomes by blueness
For redness, illustrate that determining total hardness of water is more than 0.6mmol/L.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (5)
1. a kind of determining total hardness of water quick judgement swab stick up to standard is it is characterised in that 1）Absorbent cotton is wrapped on sticking plaster and makes
Swab stick, takes out after swab stick is soaked in except hardness water and gets rid of unnecessary moisture, soaks to the EDTA solution enter variable concentrations
To offset the interference of its hardness；2）Add screening agent, indicator, pH stabilizer in pure water, make the fast eolor base of detection swab stick
Liquid；3）By swab stick to entering in the colour developing base fluid preparing, take out after soaking 4～6h, be dried, obtain determining total hardness of water up to standard quick
Judge swab stick.
2. determining total hardness of water according to claim 1 is up to standard quick judges swab stick it is characterised in that described indicator is as chromium
Black T, pH stabilizer is pH7～11 Borax sodium hydroxide buffer solution, and described screening agent is triethanolamine.
3. determining total hardness of water according to claim 2 quick judgement swab stick up to standard is it is characterised in that in described colour developing base fluid
The content of C.I. 14645. is 1～5g/L；Content 4～40mL/100 mL of pH7～11 Borax sodium hydroxide buffer solution；Described
The content of triethanolamine is 10～50mL/L.
4. determining total hardness of water quick judgement swab stick up to standard according to claim 3 is it is characterised in that the containing of described C.I. 14645.
Measure as 4～5g/L；The content of described pH7～11 Borax sodium hydroxide buffer solution is 8～32mL/100mL.
5. determining total hardness of water quick judgement swab stick up to standard according to claim 1 is it is characterised in that described EDTA magnesium salt
Content is 0.01～0.10mmol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771982.3A CN106404767A (en) | 2016-08-30 | 2016-08-30 | Cotton swab for fast determining whether total hardness of water reaches standard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771982.3A CN106404767A (en) | 2016-08-30 | 2016-08-30 | Cotton swab for fast determining whether total hardness of water reaches standard |
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| Publication Number | Publication Date |
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| CN106404767A true CN106404767A (en) | 2017-02-15 |
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| CN201610771982.3A Pending CN106404767A (en) | 2016-08-30 | 2016-08-30 | Cotton swab for fast determining whether total hardness of water reaches standard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935572A (en) * | 2022-07-25 | 2022-08-23 | 香港科技大学深圳研究院 | Visual uric acid detection method based on nano material |
Citations (9)
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|---|---|---|---|---|
| CN1247311A (en) * | 1999-08-24 | 2000-03-15 | 天津市环境监测中心 | Test paper for determining total hardness of water |
| CN1421695A (en) * | 2001-11-30 | 2003-06-04 | 上海三爱思试剂有限公司 | Test paper for detecting total hardness of water and its prepn process |
| CN1584560A (en) * | 2004-05-29 | 2005-02-23 | 周伯慧 | Water quality hardness and solid detecting reagent |
| CN1588008A (en) * | 2004-08-20 | 2005-03-02 | 沈阳工业学院 | Test paper for detecting water hardness and detecting method |
| CN2720436Y (en) * | 2004-08-20 | 2005-08-24 | 沈阳工业学院 | Test paper ruler for quantitative detecting water hardness |
| CN102253165A (en) * | 2011-04-18 | 2011-11-23 | 宁夏大学 | Total water hardness test indicator and preparation method thereof |
| CN102539329A (en) * | 2011-11-24 | 2012-07-04 | 沈阳理工大学 | Method for measuring total hardness of industrial water |
| CN105067611A (en) * | 2015-08-20 | 2015-11-18 | 北京福德安科技有限公司 | Quick test paper for hardness of water |
| CN105388149A (en) * | 2015-10-27 | 2016-03-09 | 广东环凯微生物科技有限公司 | Reagent and method for fast detecting water quality total hardness |
-
2016
- 2016-08-30 CN CN201610771982.3A patent/CN106404767A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247311A (en) * | 1999-08-24 | 2000-03-15 | 天津市环境监测中心 | Test paper for determining total hardness of water |
| CN1421695A (en) * | 2001-11-30 | 2003-06-04 | 上海三爱思试剂有限公司 | Test paper for detecting total hardness of water and its prepn process |
| CN1584560A (en) * | 2004-05-29 | 2005-02-23 | 周伯慧 | Water quality hardness and solid detecting reagent |
| CN1588008A (en) * | 2004-08-20 | 2005-03-02 | 沈阳工业学院 | Test paper for detecting water hardness and detecting method |
| CN2720436Y (en) * | 2004-08-20 | 2005-08-24 | 沈阳工业学院 | Test paper ruler for quantitative detecting water hardness |
| CN102253165A (en) * | 2011-04-18 | 2011-11-23 | 宁夏大学 | Total water hardness test indicator and preparation method thereof |
| CN102539329A (en) * | 2011-11-24 | 2012-07-04 | 沈阳理工大学 | Method for measuring total hardness of industrial water |
| CN105067611A (en) * | 2015-08-20 | 2015-11-18 | 北京福德安科技有限公司 | Quick test paper for hardness of water |
| CN105388149A (en) * | 2015-10-27 | 2016-03-09 | 广东环凯微生物科技有限公司 | Reagent and method for fast detecting water quality total hardness |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935572A (en) * | 2022-07-25 | 2022-08-23 | 香港科技大学深圳研究院 | Visual uric acid detection method based on nano material |
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Application publication date: 20170215 |