CN101101286A - Chlorine dioxide disinfector content detection method - Google Patents
Chlorine dioxide disinfector content detection method Download PDFInfo
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- CN101101286A CN101101286A CNA2006100319188A CN200610031918A CN101101286A CN 101101286 A CN101101286 A CN 101101286A CN A2006100319188 A CNA2006100319188 A CN A2006100319188A CN 200610031918 A CN200610031918 A CN 200610031918A CN 101101286 A CN101101286 A CN 101101286A
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Abstract
The invention discloses a content detection method of disinfector of chlorine dioxide. Acceding the main material activator and water only by additional when detection, cannot add additional vitriol and water. The liquor dispense of inspection: 1. the main material is sodium chlorate of duality liquid hyphen solid type, select 1.5gram main material, joining an amount of activator, by shaking and dissolving, until it become deep yellow, and then add water to constant volume 25ml.Take 1ml to assay.2.Monad solid type, taking tester 0.25g, adding water 2.5-30ml.3.Duality solid type, taking the main material 0.15g, joining stated activator and water. Assay: put the tester of liquor into the bottle of iodimetry, add potassium iodide 1g, putting the bottle closure, shaking up, after placing it in the shadow for 5 minutes, using sodium hyposulfite VS (0.1mol/L) to titrate till goal, adding amylum indicating liquid 2ml, keeping on titration till the blue disappear. The result of titration is revised by the blank test.1ml sodium hyposulfite amount to 1.349mg duality liquid hyphen solid type is divided by 25.
Description
Technical field
The present invention relates to a kind of detection method of content of disinfection agent of chlorine dioxide.
Background technology
Disinfection agent of chlorine dioxide is a kind of efficient, low toxicity sanitizer, broad market prospect.But at present most of for animals very unreasonable with the prescription of disinfection agent of chlorine dioxide product with fishery, the reaction of formation of chlorine dioxide is incomplete, thereby makes production cost of products higher relatively, and cost performance reduces.And the important reasons of generation that causes this situation be exactly adopt to the assay method of conventional chlorine-containing agent available chlorine content and be not suitable for the disinfection agent of chlorine dioxide Determination on content.
The assay method of conventional chlorine-containing agent effective chlorine is an iodimetric titration, needs to add a large amount of acid and water in the mensuration.And the activator in the disinfection agent of chlorine dioxide also is acid, and its dosage and concentration have very big influence to the generation of dioxy chlorine, and a lot of products all are that main material and activator ratio are improper on the market.Amount as activator in the said preparation is not enough, just the acid that adds in then measuring becomes it and replenishes, makes measured value be higher than actual value.
Except iodimetric titration, also have continuous iodimetric titration to use morely.This kind assay method as many is used for the mensuration of the chlorine dioxide that need not activate with iodimetric titration, its advantage is chlorine dioxide and its unreacted product, intermediate product and the accessory substance that can distinguish in the product, need add a large amount of mensuration acid but still exist, transfer to 2.0 as the pH that wherein needs to measure liquid, and then influence the problem of its measurement result.Though new assay method can not directly make a distinction chlorine dioxide and other associated products, this influence seldom.In addition, hell to pay is gone up in the operation of iodine amount continuously, does not have too big practical significance.Need activated disinfection agent of chlorine dioxide still to be advisable with this assay method.
The mensuration of chlorine dioxide all is to adopt conventional iodimetric titration all the time, and also the someone adopts continuous iodimetric titration (method is substantially the same therewith for five step iodimetric titration) simultaneously.The accuracy that both just directly measure chlorine dioxide content in the solution to be measured is undoubted, but to for animals now with the current, its raw material is not that the mensuration both of the disinfection agent of chlorine dioxide of chlorine dioxide exists the contradictory problems that adds in considering to measure between acid and the activator.This assay method has then solved this problem.In the iodimetric titration after conventional iodimetric titration and this improvement, the value of its mensuration is actually and has reflected the aggregate level of measuring all substances redox reaction in the liquid, promptly is not only chlorine dioxide, also comprises chlorine and unreacted main material etc.With regard to Disinfection Effect, these do not have any influence basically, and numerous necessity is not got in the house letter.Because still being measured value, the key of disinfection agent of chlorine dioxide assay can truly reflect the amount of effective disinfection composition that reactant produces.Though the disinfecting properties and the chlorine dioxide of accessory substance, intermediate product and unreacted reactant in these chlorine dioxide reactions of formation have certain difference, the oxidisability of measuring is equivalent.
Therefore, in order to reflect the disinfection agent of chlorine dioxide content of effective more realistically, the accuracy of improving the quality of products and detecting instructs the research and development of this series products, improve its product quality, setting up such accurate detection method is a very important invention.
Summary of the invention
The object of the present invention is to provide a kind of accuracy height, good stability, easy, effective disinfection agent of chlorine dioxide content detecting method.
The present invention includes following steps:
1, the weighing of inspection product
(1) liquid-solid type disinfection agent of chlorine dioxide: get main material 1.5g, the accurate title, decide, and places the 150ml triangular flask; The dosage of liquid activating agent adds by the actual ratio of its two-component packaging.
(2) binary solid type disinfection agent of chlorine dioxide: get main material 0.15g (sodium chlorite), the accurate title, decide, and places the 250ml iodine flask.The dosage of solid activating agent adds by the actual ratio of two-component packaging.
3. Monophyletic solid disinfectant of chlorine dioxide: get inspection product 0.25g (containing main material and activator), the accurate title, place the 250ml iodine flask calmly.
2, the preparation of the activation of inspection product and inspection product solution
(1). the liquid-solid type disinfection agent of chlorine dioxide: the activator after will diluting adds in the main material gently, treat that its chlorine dioxide reaction of formation carries out fully, after solution becomes buff, adding water again is settled to 50ml and (also can earlier main material be diluted with a small amount of clear water, but at this moment be the main material after the dilution will to be added in activator, rather than activator is added in main material.Because whether the chlorine dioxide reaction of formation carry out can not judging well fully, thus add during constant volume water amount should satisfy under the prerequisite of basic need more few more).From volumetric flask, get inspection product solution 2ml then, place the 250ml iodine flask, be used for titration.
(2). binary solid type disinfection agent of chlorine dioxide and Monophyletic solid disinfectant of chlorine dioxide: the product of will examining are dissolved in water with regulation amount of water on the product description, and shake up, and make inspection product fully dissolving and reaction.Treat that its chlorine dioxide reaction of formation carries out fully substantially, after solution becomes buff, just directly carry out titration.
3, the titration of inspection product solution
Add potassium iodide 1.0g in above-mentioned solution, add bottle stopper, it is even to shake.After in the dark placing 5 minutes, drip Xiao Xu vs washing bottle stopper and bottle inwall, during near terminal point (it is light yellow that solution is), add starch indicator solution 2ml with sodium thiosulfate vs (0.1mol/L) titration, continue titration and disappear, write down the consumption (V) of sodium thiosulfate to blue; The result of titration is proofreaied and correct (method of titration and iodimetric titration are basic identical in this mensuration, but the time of the amount of getting of inspection product solution and potassium iodide, placement in the dark etc. change to some extent) with blank test.
4, result's calculating
The computing method of binary solid type disinfection agent of chlorine dioxide content and Monophyletic solid disinfectant of chlorine dioxide content and computing formula etc. are identical with the iodimetric titration of routine in this method, promptly are calculated as follows:
In the formula: (M)=the gram number of main material;
The actual concentrations of F=sodium thiosulfate/0.1;
The milliliter number of the 0.1mol sodium thiosulfate that consumes during the V=titration;
V
0The milliliter number of the 0.1mol sodium thiosulfate that=titration blank solution consumes.
And the computing formula of its liquid-solid type disinfection agent of chlorine dioxide content and conventional iodine amount are different, promptly are calculated as follows:
In the formula: (M)=the gram number of main material;
The actual concentrations of F=sodium thiosulfate/0.1;
The milliliter number of the 0.1mol sodium thiosulfate that consumes during the V=titration;
V
0The milliliter number of the 0.1mol sodium thiosulfate that=titration blank solution consumes.
Claims (8)
1. the detection method of content of a disinfection agent of chlorine dioxide is characterized in that may further comprise the steps:
(1) preparation of the weighing of inspection product and inspection product solution
A, be the disinfection agent of chlorine dioxide of main material: get main material 1.5g, accurately claim surely, place the 150ml triangular flask with sodium chlorate.Get an amount of activator in accordance with regulations in addition, and add the suitable quantity of water dilution in accordance with regulations, making its concentration is 15-35%, adds together in the main material again, and jolting gently makes its dissolving, activation.Treat that its chlorine dioxide reaction of formation is complete, after solution becomes buff, add water again and be settled to 25ml;
B, Monophyletic solid disinfectant of chlorine dioxide: get inspection product 0.25g, put in the 150ml triangular flask, add water 2.5-30ml dissolving and activation, be equipped with and survey.
C, binary solid disinfection agent of chlorine dioxide: get main material 0.15g earlier, accurate claim surely, place the 150ml triangular flask, add activator then to scale, add doubly water-soluble of 10-40 again and separate and activate.
(2) titration of inspection product solution
Inspection product to be measured are after treatment placed the iodine flask of 250ml the late into the night, add potassium iodide 1.0g, add bottle stopper, it is even to shake, in the dark place 5 minutes after, drip Xiao Xu vs washing iodine flask bottle stopper and bottle inwall, during to nearly terminal point (it is light yellow that solution is), add starch indicator solution 2ml with sodium thiosulfate vs (0.1mol/L) titration, continue titration and disappear to blue, write down the consumption (V) of sodium thiosulfate, the result of titration is proofreaied and correct with blank test;
(3) result's calculating
The content of disinfection agent of chlorine dioxide is calculated as follows:
In the formula: (M)=the gram number of inspection product main material or raw material (Monophyletic solid and binary solid disinfection agent of chlorine dioxide).Wherein the liquid-solid type disinfection agent of chlorine dioxide is that actual weighing is divided by 25;
The actual concentrations of F=sodium thiosulfate/0.1;
The milliliter number of the 0.1mol sodium thiosulfate that consumes during the V=titration;
V
0The milliliter number of the 0.1mol sodium thiosulfate that=titration blank solution consumes.
2. disinfection agent of chlorine dioxide content detecting method according to claim 1, the weighing that it is characterized in that described inspection product and inspection product solution be formulated as a, be the disinfection agent of chlorine dioxide of main material with sodium chlorate: get main material 1.5g, the accurate title, decide, and places the 150ml triangular flask.Get an amount of activator in accordance with regulations in addition, and add the suitable quantity of water dilution in accordance with regulations, making its concentration is 15-35%, adds together in the main material again, and jolting gently makes its dissolving, activation.Treat that its chlorine dioxide reaction of formation is complete, after solution becomes buff, add water again and be settled to 25ml; B, Monophyletic solid disinfectant of chlorine dioxide: get inspection product 0.25g, put in the 150ml triangular flask, add water 2.5-35ml dissolving and activation, be equipped with and survey.C, binary solid disinfection agent of chlorine dioxide: get main material 0.15g earlier, accurate claim surely, place the 150ml triangular flask, add activator then to scale, add doubly water-soluble of 10-40 again and separate and activate.
3. the detection method of content of disinfection agent of chlorine dioxide according to claim 1, it is characterized in that the inspection product to be measured after activated are placed the iodine flask of 250ml, add potassium iodide 1.0g, add bottle stopper, it is even to shake, after in the dark placing 5 minutes, drip Xiao Xu vs washing iodine flask bottle stopper and bottle inwall, with sodium thiosulfate vs (0.1mol/L) titration during to nearly terminal point (it is light yellow that solution is), add starch indicator solution 2ml, continue titration and disappear, write down the consumption (V) of sodium thiosulfate, the result of titration is proofreaied and correct with blank test to blue.
4. according to claim 1 or 2 or 3 described disinfection agent of chlorine dioxide detection method of content, (Monophyletic solid disinfectant of chlorine dioxide main material and activator mix only to add activator by standard and the requirement of product description regulation in it is characterized in that measuring, do not need to add in addition activator), 20% the sulfuric acid 20ml that directly need not add in the iodine adding amount method.
5 according to claim 1 or 2 or 3 described disinfection agent of chlorine dioxide detection method of content, and adding dissolving, dilution or activation water in it is characterized in that measuring is to add by the product description regulation, is not directly to add water to 100ml, just adds the water constant volume again after activation is good.
6. according to claim 1 or 2 or 3 described disinfection agent of chlorine dioxide detection method of content, it is characterized in that the described potassium iodide 1.0g that adds in mensuration, it is even to shake, and in the dark places 5 minutes, drips Xiao Xu vs washing bottle stopper and bottle inwall.
7. according to claim 1 or 2 or 3 described disinfection agent of chlorine dioxide detection method of content, it is characterized in that described in mensuration the preparation of inspection product solution be to treat that its chlorine dioxide reaction of formation carries out after solution becomes buff, adding the water constant volume more fully.
8. according to claim 1 or 2 or 3 described disinfection agent of chlorine dioxide detection method of content, it is characterized in that described mensuration process is after adding an amount of activator activation by description of product requirement earlier, to measure by the iodimetric titration process again.
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| CNA2006100319188A CN101101286A (en) | 2006-07-04 | 2006-07-04 | Chlorine dioxide disinfector content detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532998B (en) * | 2009-04-23 | 2011-06-01 | 隆昌山川精密焊管有限责任公司 | A method for detecting chlorine dioxide content in life drinking water |
| CN102426169A (en) * | 2011-11-09 | 2012-04-25 | 天津市天骄辐射固化材料有限公司 | Method for detecting content of peroxide in polyether polyol |
| CN102778533A (en) * | 2012-08-13 | 2012-11-14 | 徐云 | Evaluation screening method and evaluation operating process for chlorine-containing disinfectants |
| CN105259300A (en) * | 2015-10-26 | 2016-01-20 | 广州立白企业集团有限公司 | Method for improving iodometry measurement accuracy of samples containing interfering substances |
| CN106290333A (en) * | 2016-07-27 | 2017-01-04 | 浙江景嘉医疗科技有限公司 | A kind of detection method of sacculus product reducing substances |
| CN113514454A (en) * | 2021-06-21 | 2021-10-19 | 宜都市友源实业有限公司 | Method for detecting free residual chlorine in chlorine-containing organic chemical products |
-
2006
- 2006-07-04 CN CNA2006100319188A patent/CN101101286A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532998B (en) * | 2009-04-23 | 2011-06-01 | 隆昌山川精密焊管有限责任公司 | A method for detecting chlorine dioxide content in life drinking water |
| CN102426169A (en) * | 2011-11-09 | 2012-04-25 | 天津市天骄辐射固化材料有限公司 | Method for detecting content of peroxide in polyether polyol |
| CN102778533A (en) * | 2012-08-13 | 2012-11-14 | 徐云 | Evaluation screening method and evaluation operating process for chlorine-containing disinfectants |
| CN102778533B (en) * | 2012-08-13 | 2015-01-28 | 徐云 | Evaluation screening method and evaluation operating process for chlorine-containing disinfectants |
| CN105259300A (en) * | 2015-10-26 | 2016-01-20 | 广州立白企业集团有限公司 | Method for improving iodometry measurement accuracy of samples containing interfering substances |
| CN106290333A (en) * | 2016-07-27 | 2017-01-04 | 浙江景嘉医疗科技有限公司 | A kind of detection method of sacculus product reducing substances |
| CN113514454A (en) * | 2021-06-21 | 2021-10-19 | 宜都市友源实业有限公司 | Method for detecting free residual chlorine in chlorine-containing organic chemical products |
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