CN2704840Y - Chlorinedioxide colorimetric determining tubes - Google Patents
Chlorinedioxide colorimetric determining tubes Download PDFInfo
- Publication number
- CN2704840Y CN2704840Y CN 200420010356 CN200420010356U CN2704840Y CN 2704840 Y CN2704840 Y CN 2704840Y CN 200420010356 CN200420010356 CN 200420010356 CN 200420010356 U CN200420010356 U CN 200420010356U CN 2704840 Y CN2704840 Y CN 2704840Y
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- glass tube
- chlorine dioxide
- liquid
- tube
- height
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- Expired - Fee Related
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to a determining apparatus for the chlorine dioxide content in the water quality, particularly a chlorine dioxide colorimetric determining tube which comprises a vacuum seal glass tube with uniform section. One end of the glass tube is provided with a sealed and communicated capillary tube section, and the glass tube is filled with fluoride determination liquid. The ratio of the height H1 of the determination liquid in the glass tube and the hanging height H2 of the uniform section of the glass tube is 1: 7-12. The utility model enabling the production and integration of the detection technique encloses the prepared determination liquid in the vacuum glass tube. The chlorine dioxide colorimetric determining tube with convenience for use and carrying, simple, rapid and accurate determination and long preservation time can be directly used. The accurate and reliable test result conforms to the required precision of the error of water quality analysis, and the detection limit conforms to the standard of the national drinking water.
Description
One. technical field: the utility model relates to chlorine dioxide content determination utensil in a kind of water quality, particularly relates to a kind of chlorine dioxide colorimetric cylinder.
Two. background technology: chlorine dioxide be a kind of efficient, wide spectrum, fast, low toxicity, broad-spectrum disinfectant, at present iodimetric titration is generally adopted in the test of its concentration.Iodimetric titration is a kind of indirect assay method, it is to utilize chlorine to discharge quantitative iodine with the potassium iodide effect in acid solution, use the sodium thiosulfate standard solution titration again, calculate the content of chlorine with the amount of thiosulfuric acid sodium waste, this method must six kinds of reagent of preparation: (1) potassium iodide (requiring not contain free-iodine and Potassiumiodate), and (2) are sulfuric acid (1+5), (3) potassium dichromate standard solution, (4) sodium thiosulfate standard titration solution, (5) starch solution, (6) acetate buffer solution.It is as follows that it detects step:
(1) prepares above-mentioned all ingredients respectively;
(2) demarcate sodium thiosulfate standard solution concentration with the potassium dichromate standard solution;
(3) 100 milliliters of water samplings add 0.5 gram potassium iodide and 5 milliliters of acetate buffer solutions in iodine flask, shake up; Drip sodium thiosulfate standard solution in buret, it is faint yellow that water sample is become, and adds 1 milliliter of 1% starch solution, makes water sample become blue, continues titration and disappear to blue; Record sodium thiosulfate standard solution consumption, and calculate chlorinity.
This method complex operation step, it is many to repeat work, and use is chemical, glass apparatus is many, and some is the very high expensive instrument of precision, needs high-quality personnel operation, needs the very high instrument of weighing of service precision.The iodometric determination time is long, and the disturbing factor that operates is more, and titration end-point is difficult for judging that the measurement result error is bigger.
Three. utility model content: the utility model purpose: at the background technology deficiency, use lambert-Beer law, adopt the visual colorimetric determination technology, make a kind of easy to carry, chlorine dioxide colorimetric cylinder of using simple and fast.
The technical scheme that the utility model adopted: a kind of chlorine dioxide colorimetric cylinder, contain uniform cross section vacuum seal glass tube, be provided with sealing at glass tube one end and be communicated with capillary tube segment, fluoride measurement liquid is housed in glass tube, measure the height H of liquid in glass tube
1With the glass tube uniform cross section height H of leaving a blank
2Ratio be H
1: H
2=1: 7～12.
Described chlorine dioxide colorimetric cylinder is measured the height H of liquid in glass tube
1With the glass tube uniform cross section height H of leaving a blank
2Ratio be H
1: H
2=1: 7～8.
It is formulated by a certain percentage that chlorine dioxide is measured the sulfuric acid that liquid sprouts amine, 1mol/L by 0.005% methyl red or methyl orange, neighbour's connection of 0.001%, its corresponding volume ratio can be: 15～20: 2～5: 50～75, sprout the concentration of amine composition and improve or reduce along with measuring methyl red in the liquid or methyl orange, adjacent connection, measuring pipe and wherein measure the volume of liquid can corresponding increase or dwindle.
Positive beneficial effect of the present utility model:
1. the utility model buret is the detection technique commercialization, and is integrated, and the mensuration fluid-tight for preparing is loaded in the glass tube with vacuum, can directly use.Only need during operation to fracture in the water sample to be measured capillary tube segment of testing tube makes in the water sample automatic ration tail pipe to be measured and measures liquid generation metachromasia, with the contrast of standard color range, just can draw chlorine dioxide content more accurately behind the colour stable.Need not be when each test preparing standard solution, reagent, can simplify the detection step greatly, save minute, reduce workload, reduce labor intensity.
2. traditional iodometric determination chlorine residue total amount, if contain nitrite, high ferro and manganese in the water quality, can be in acid solution and the potassium iodide effect, disengage iodine and produce interference, thereby when measuring, need dispose acetate buffer and get rid of the above-mentioned substance interference, then there is not the problem of this respect in the utility model, directly applies to liquid to be measured and measures, quick and precisely.
3. to measure the chromogenic reaction of liquid and determinand (chlorine dioxide) be to carry out automatically in the glass tube with vacuum under specific pH value condition to the utility model, can effectively avoid stochastic error and personal error, testing result accurately and reliably, meet the requirement of water analysis error precision, detection limit meets national potable water requirement standard.
The utility model carry, easy to use, measure simple fast, accurately, the holding time is long.Carry out on-the-spot detection and can remove many equipment and instruments from, save human and material resources greatly, reduce integrated cost.The utility model is easy to promotion and implementation, has good social and economic benefit.
Testing tube of the present invention and iodimetric titration data comparison sheet:
Four. description of drawings:
Fig. 1: chlorine dioxide colorimetric cylinder structural representation
Five. embodiment:
Embodiment: make the series standard colour code that detects chlorine dioxide content, the method that forms color range.For example make 12 the color range pipes of standard colour code that detect low concentration chlorine dioxide content in the water quality, chlorine dioxide content is respectively 0mg/L, 0.03mg/L, 0.05mg/L, 0.1mg/L, 0.15mg/L, 0.20mg/L, 0.30mg/L, 0.4mg/L, 0.5mg/L, 0.6mg/L, 0.7mg/L, the standard colour code of 1.0mg/L.At first get 0.005% methyl red or methyl orange 20ml, neighbour's connection of 0.001% is sprouted amine 5ml, and the sulfuric acid 75ml of 1mol/L is mixed and made into mensuration liquid, making chlorine dioxide content then respectively is 0mg/L, 0.03mg/L, 0.05mg/L, 0.1mg/L, 0.15mg/L, 0.20mg/L, 0.30mg/L, 0.4mg/L, 0.5mg/L, 0.6mg/L, 0.7mg/L, 12 kinds of normal concentration aqueous solution of chlorine dioxide of 1.0mg/L, to measure liquid and various normal concentration aqueous solution of chlorine dioxide and pour into reaction solution in 12 charomatrons respectively in 1: 8 ratio, and constant color, seal charomatron then, form non-fading serial color range standard colors mark pipe.
Can make high concentration of chlorine dioxide content with quadrat method and be respectively 0mg/L, 1mg/L, 2mg/L, 3mg/L, 4mg/L, 5mg/L, 6mg/L, 7mg/L, 8mg/L, 9mg/L, 10 color range pipe standards colour codes of 10mg/L are not specifically stated auspicious.
The buret implementation method: referring to Fig. 1,1 is the uniform cross section glass tube with vacuum among the figure, and 2 is capillary tube segment, and 3 are chlorine dioxide mensuration liquid.H
1For measuring liquid height, H
2For the uniform cross section vacuum tube is left a blank highly.Uniform cross section glass tube with vacuum external diameter is 6.5 millimeters in the present embodiment, 12 centimetres of overall heights, the height H of mensuration liquid in the glass tube
1Be 1.1 centimetres, the height H of leaving a blank
2Be 8.8 centimetres, capillary tube segment length is 2.1 centimetres, the mensuration liquid of same concentration when encapsulating as above preparation standard colour code in it.Measure pipe and be packaged into product, can carry out on-the-spot contrast, mensuration with the standard colour code.
During use, the capillary tube segment of measuring pipe is immersed in the analyte sample fluid, kapillary fractures, be filled the uniform cross section glass tube with vacuum pipeline section of leaving a blank Deng analyte sample fluid, take out to be inverted repeatedly and mix, make it fully to carry out chromogenic reaction, contrast with the standard colour code behind about 5～10 minutes colour stables, be the chlorine dioxide content that records with the pairing chlorine dioxide concentration numerical value of the colour code that is near the mark most,, then get its mean value if measure the pipe color between two standard colour codes.
Claims (4)
1. a chlorine dioxide colorimetric cylinder contains uniform cross section vacuum seal glass tube, is provided with sealing at glass tube one end and is communicated with capillary tube segment, it is characterized in that: chlorine dioxide is housed in glass tube measures liquid, measure the height H of liquid in glass tube
1With the glass tube uniform cross section height H of leaving a blank
2Ratio be H
1: H
2=1: 7～12.
2. chlorine dioxide colorimetric cylinder according to claim 1 is characterized in that: measure the height H of liquid in glass tube
1With the glass tube uniform cross section height H of leaving a blank
2Ratio be H
1: H
2=1: 7～8.
3. chlorine dioxide colorimetric cylinder according to claim 1, it is characterized in that: chlorine dioxide is measured liquid and is contained the sulfuric acid that 0.005% methyl red or methyl orange, neighbour's connection of 0.001% are sprouted amine, 1mol/L, and its corresponding unit volume ratio can be: 15～20: 2～5: 50～75.
4. according to each described chlorine dioxide colorimetric cylinder of claim 1～3, it is characterized in that: measure methyl red in the liquid or methyl orange, adjacent connection and sprout the concentration of amine composition and improve or reduce, measure that the volume of liquid is corresponding to be dwindled or increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010356 CN2704840Y (en) | 2004-03-12 | 2004-03-12 | Chlorinedioxide colorimetric determining tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010356 CN2704840Y (en) | 2004-03-12 | 2004-03-12 | Chlorinedioxide colorimetric determining tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2704840Y true CN2704840Y (en) | 2005-06-15 |
Family
ID=34768286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010356 Expired - Fee Related CN2704840Y (en) | 2004-03-12 | 2004-03-12 | Chlorinedioxide colorimetric determining tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2704840Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510706C (en) * | 2005-11-08 | 2009-07-08 | 白莉 | Arsenic assaying liquid and colorimetric cylinder thereof |
| CN100543453C (en) * | 2005-11-08 | 2009-09-23 | 白莉 | Thorium assaying liquid and colorimetric cylinder thereof |
| CN1773254B (en) * | 2005-11-14 | 2010-08-25 | 白莉 | Selenium assaying liquid and colour comparision tube thereof |
-
2004
- 2004-03-12 CN CN 200420010356 patent/CN2704840Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510706C (en) * | 2005-11-08 | 2009-07-08 | 白莉 | Arsenic assaying liquid and colorimetric cylinder thereof |
| CN100543453C (en) * | 2005-11-08 | 2009-09-23 | 白莉 | Thorium assaying liquid and colorimetric cylinder thereof |
| CN1773254B (en) * | 2005-11-14 | 2010-08-25 | 白莉 | Selenium assaying liquid and colour comparision tube thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |