CN1062599A - Cleaning liquid of macromolecular membrane electrode - Google Patents
Cleaning liquid of macromolecular membrane electrode Download PDFInfo
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- CN1062599A CN1062599A CN 91109966 CN91109966A CN1062599A CN 1062599 A CN1062599 A CN 1062599A CN 91109966 CN91109966 CN 91109966 CN 91109966 A CN91109966 A CN 91109966A CN 1062599 A CN1062599 A CN 1062599A
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- electrode
- potassium
- washing fluid
- sodium
- distilled water
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- Investigating Or Analysing Biological Materials (AREA)
Abstract
The present invention relates to a kind of cleaning fluid of medical science assay device, it is applicable to that potassium sodium analyser measurement whole blood, blood plasma, serum and urine etc. generate the washing fluid of the polymer electrode membrane of the material in the body compositions.It is in 1 liter of distilled water, adds sodium chloride 126mmol, and potassium dihydrogen phosphate 5mmol and Sodium azide 14mmol evenly mix at normal temperatures, and it is dissolved in the distilled water.The cleaning of potassium sodium analyser polymer electrode membrane not only can be cleaned attached to the protein on the electrode, and can reduce the corrosion to electrode film, prolongs electrode film serviceable life greatly, and has prolonged the washing fluid holding time.In addition, preparation is simple, and is with low cost.
Description
The present invention relates to a kind of cleaning fluid of medical science assay device, it is applicable to that potassium sodium analyser measurement whole blood, blood plasma, serum and urine etc. generate the washing fluid of the polymer electrode membrane of the material in the body compositions.
At present, common potassium sodium analyser has three electrodes, it is respectively contrast electrode, potassium electrode and sodium electrode (back two kinds is ion-selective electrode), the polymeric membrane of their electrode surface is respectively a match road phenol film, valinomycins film and sodium sensing glass film, according to ion-selective electrode the ion activity in the solution is compared the more responsive characteristic of concentration, in the solution by measured ion, move on the film of ion-selective electrode, just between potential electrode and contrast electrode, produced a potential difference (PD), for desirable ion-selective electrode, the directly proportional rule of logarithm of electrode potential and ion activity can be found, just effects of ion activity can be accurately measured.In fact, because generation object compositions such as blood and urine contain range protein, be attached on the electrode film, in the process of carrying out repeated measurement, the sensitivity of instrument will reduce, so that can not measure.Therefore, all must clean polymer electrode membrane after each test, and require cleaning fluid to clean up electrode, but also not damage the polymeric membrane of electrode, keep the activity of electrode, prolong the serviceable life of electrode film.Though the washing fluid of existing external preparation can be cleaned electrode, also not obvious to the infringement of electrode film, the serviceable life of electrode film is still shorter, and especially the contrast electrode film can only be with about three months.
The purpose of this invention is to provide a kind of cleaning liquid of macromolecular membrane electrode, it is that the oxide that will contain water, potassium dihydrogen phosphate add the Sodium azide antiseptic, preventing bacterial growth on the electrode film, thereby prolongs the serviceable life of electrode film.
The object of the present invention is achieved like this: it is in 1 liter of distilled water, add sodium chloride 126mmol, potassium dihydrogen phosphate 5mmol and Sodium azide 14mmol, evenly mix at normal temperatures, it is dissolved in the distilled water, the concentration K of its washing fluid potassium sodion is 5mmol/l, and Na is 140mmol/l.
Owing to adopt the washing fluid of above-mentioned prescription, cleaning to potassium sodium analyser polymer electrode membrane, not only can clean attached to the protein on the electrode, and can reduce corrosion to electrode film, prolong the serviceable life of electrode film greatly, the contrast electrode film can reach seven months serviceable life, potassium, sodium electrode film longer service life.
In this washing fluid, Sodium azide can prevent bacterial growth on the electrode film, thereby use this washing fluid to clean polymer electrode membrane, make the life-span of electrode film prolong one times than existing external detergent remover, but also having prolonged at least eight months holding times of washing fluid itself, preservation can also prolong in the refrigerator if be placed on, in addition, compound method is simple, and is with low cost.
Owing to contain K in normal human's serum
+Be 3.6～5.5mmol/L, Na
+Be 138～146mmol/L, in order to make the washing fluid of minute quantity remaining in the cell, to K in the measured matter
+, Na
+Concentration exert an influence, so the washing fluid for preparing contains K
+Must in (5.0 ± 0.5) mmol/L scope, contain Na
+Must be in (140 ± 2) mmol/L scope.
We have carried out revision test and recovery test: get three parts of serum washing fluids of the present invention, each is measured 21 times, average OCV:K
+Be 0.4%, Na
+Be that 0.39%, three part of pooled serum is measured once every day, METHOD FOR CONTINUOUS DETERMINATION 21 days, average RCV:K
+Be 1.84%, Na
+Be 1.08%, meet the permission range of variation of the WHO of World Health Organization (WHO) regulation.Pooled serum contains Na
+Be 136mmol/l, add Na respectively
+: 20,40,60mmol/l, alluvial is 19,41,58mmol/l, and average recovery rate is 98%, and pooled serum contains K
+Be 3.6mmol/l, add K respectively
+: 2,4,6mmol/l, alluvial is 2.1,3.9,6.2mmol/l, and average recovery rate is 101.9%.
Also advance washing fluid Na of the present invention once more
+And K
+Quality control test: measure K year March in Dec, 90 to 91
+The vis value be respectively: 44,37,0,15, average vis=24; Na
+The vis value be respectively: 44,53,25,35, average vis=39 all reaches outstanding level.
Claims (1)
- A kind of cleaning liquid of macromolecular membrane electrode is characterized in that: in 1 liter of distilled water, add sodium chloride 126mmol, potassium dihydrogen phosphate 5mmol and folded ammonia sodium 14mmol, evenly mix at normal temperatures, it is dissolved in the distillation not, the concentration K of its washing fluid potassium sodion +Be 5mmol/l, Na +Be 140mmol/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109966 CN1023258C (en) | 1991-10-30 | 1991-10-30 | Cleaning liquid of macromolecular membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109966 CN1023258C (en) | 1991-10-30 | 1991-10-30 | Cleaning liquid of macromolecular membrane electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062599A true CN1062599A (en) | 1992-07-08 |
| CN1023258C CN1023258C (en) | 1993-12-22 |
Family
ID=4910079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91109966 Expired - Fee Related CN1023258C (en) | 1991-10-30 | 1991-10-30 | Cleaning liquid of macromolecular membrane electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023258C (en) |
-
1991
- 1991-10-30 CN CN 91109966 patent/CN1023258C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1023258C (en) | 1993-12-22 |
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| PB01 | Publication | ||
| 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 |