CS244975B1 - Analyzing method of polishing baths - Google Patents
Analyzing method of polishing baths Download PDFInfo
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- CS244975B1 CS244975B1 CS846413A CS641384A CS244975B1 CS 244975 B1 CS244975 B1 CS 244975B1 CS 846413 A CS846413 A CS 846413A CS 641384 A CS641384 A CS 641384A CS 244975 B1 CS244975 B1 CS 244975B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- polishing
- bath
- acid
- polishing bath
- sample
- Prior art date
Links
- 238000007517 polishing process Methods 0.000 title description 3
- 238000005498 polishing Methods 0.000 claims abstract description 33
- 239000005355 lead glass Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000002218 isotachophoresis Methods 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- 239000003792 electrolyte Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 150000001450 anions Chemical class 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 16
- 238000004458 analytical method Methods 0.000 description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 2
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 235000013922 glutamic acid Nutrition 0.000 description 2
- 239000004220 glutamic acid Substances 0.000 description 2
- 125000000291 glutamic acid group Chemical group N[C@@H](CCC(O)=O)C(=O)* 0.000 description 2
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004111 Potassium silicate Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- -1 potassium fluorosilicate Chemical compound 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
Riešenie sa týká sposobu analýzy leštiarenských kúpelov používaných na leštenie olovnatého křišťálu, izotachoforézou. Podstata riešenia spočívá v tom, že na vzorku leštiarenského kúpela sa působí jednosměrným prúdom, vplyvom ktorého migrujúce anióny jednotlivých zložiek leštiarenského kúpela sa separujú do zón, ktoré prechádzajú cez vodivostný článok, ktorý na základe vodivosti a doby přechodu zóny vysiela elektricky spracovatetný signál úměrný látkovým množstvám jednotlivých zložiek v leštiarenskom kúpeli.The solution relates to a method for analyzing polishing baths used for polishing lead crystal, isotachophoresis. The essence of the solution is that the sample of the polishing bath is unidirectional current, the effect of which migrants the anions of the individual components of the polishing agent baths are separated into zones that they pass through a conductivity cell that based on conductivity and zone transition time transmits an electronically processed signal proportional to the individual amounts of the substances ingredients in a polishing bath.
Description
Vynález rieši analýzu leštiarenskych kúpelov používaných na leštenie olovnatého křišťálu pre určenie množstva jednotlivých zložiek v leštiarenskych kúpeloch, ako sú'kyselina sírová, kyselina fluorovodíková a kyselina fluorokremičitá.The invention solves the analysis of the polishing baths used for polishing lead crystal to determine the amount of individual components in the polishing baths, such as sulfuric acid, hydrofluoric acid, and fluorosilicic acid.
Pri leštení skla z olovnatého křišťálu musí byť dodržané zloženie leštiarenského kupel'a, t. j. poměr kyseliny sírovej, kyseliny fluorovodíkovej a kyseliny fluorokremičitej, a preto je potřebné před leštěním výrobkov z olovnatého křišťálu vykonat analýzu leštiarenského kúpela. Dosial' používané sposoby analýzy sú titračné stanovenie jednotlivých zložiek leštiarenského kúpel'a a stanovenie fluoridov pomocou ionoselektívnej fluoridovej elektrody. Dalším známým sposobom je kombinácia merania hustoty a hmotnosti. Nevýhodou uvedených spósobov anatýzy-ieštirenského kúpela je popři ich nepřesnosti najma časová náročnost, pretože podfa uvedených sposobov trvá analýza niekolko hodin, takže pokial' sa zistí, či zloženie leštiarenského kúpefa je podfa technologického předpisu, može dojsť pri leštení, ktoré trvá cca 20 rninút, k znehodnoteniu leštěných výrobkov.When polishing lead crystal glass, the composition of the polishing bath must be observed, ie. j. the ratio of sulfuric acid, hydrofluoric acid and fluorosilicic acid and therefore polishing bath analysis needs to be performed before polishing lead crystal products. The analysis methods used so far are the titration determination of the individual components of the polishing bath and the determination of fluorides by means of an ionoselective fluoride electrode. Another known method is a combination of density and weight measurements. The disadvantage of the above-described methods of anatomy-irradiation bath is, besides their inaccuracy, the time consuming, because according to the mentioned methods, the analysis takes several hours, so if it is found out whether the composition of the polishing bath is according to the technological regulation degradation of polished products.
Uvedené nedostatky odstraňuje sposob analýzy Teštíarenskych kúpelov· používaných na leštenie olovnatého křišťálu, izotachoforézou, podlá vynálezu, ktorého podstatou je, že na vzorku leštiarenského kúpefa vnesenú na rozhranie vodiaceho a zakončovacieho elektrolytu sa posobí jednosměrným elektrickým prúdom, vplyvom ktorého migrujúce anióny jednotlivých zložiek leštiarenského kúpela, kyseliny sírovej, kyseliny fluorovodíkovej a kyseliny fluorokremičitej, sa separujú do zón, ktoré pri svojom pohybe ku kladnej elektróde prechádzajú cez identifikačný vodivostný článok, ktorý na základe vodivosti a doby přechodu zóny vysiela elektricky spracovatelný signál úměrný látkovým množstvám jednotlivých zložiek v leštiarenskom kúpeli.The above-mentioned drawbacks are eliminated by the method of analysis of the engineering baths used for polishing lead crystal by isotachophoresis according to the invention, which is based on the sample of the polishing bath introduced at the interface of the guide and terminating electrolyte being treated with unidirectional electric current. sulfuric acid, hydrofluoric acid and fluorosilicic acid are separated into zones which, as they move towards the positive electrode, pass through an identification conductive cell which, based on the conductivity and the transition time of the zone, emits an electrically processable signal proportional to the substance quantities of the individual components in the polishing bath.
Hlavným účinkom spósobu analýzy leštiarenskych kúpelov, podfa vynálezu, je rýchlosť analýzy leštiarenského kúpela, ktoje přibližné 12 minút a najma přesnost stanovenia koncentrácie kyselin v leštiarenskom kúpeli, čo umožní upravit zloženie leštiarenského· kúpela ešte v priebehu procesu leštenia, čím sa dá predísť znehodnoteniu leštěných výrobkov·. Dalšou výhodou spósobu analýzy podlá vynálezu je, že signál vysielaný identifikačným vodivostným článkom je elektricky spracovatelný, čo umožní napr. i automatické ovládanie procesu leštenia.The main effect of the polishing bath analysis method according to the invention is the speed of analysis of the polishing bath, which is approximately 12 minutes, and in particular the accuracy of the acid concentration determination in the polishing bath, allowing the composition of the polishing bath to be adjusted during the polishing process. ·. Another advantage of the method of analysis according to the invention is that the signal transmitted by the identification conductive cell is electrically processable, allowing e.g. and automatic control of the polishing process.
Příklad vykonania analýzy leštirenského kúpela podlá vynálezu.An example of an analysis of a polishing bath according to the invention.
Pri analýze leštiarenského kúpela sa stanovuje množstvo· kyseliny sírovej, kyseliny fluorovodíkovej a kyseliny fluorokremičitej v leštiarenskom kúpeli. Vzorka leštiarenského kúpela sa zriedi redestilovanou vodou a zneutralizuje roztokom hydroxidu sodného. Takto upravená vzorka sa vnesie na rozhranie vodiaceho elektrolytu a zakončovaeieho elektrolytu. Vodiacim elektrolytom je kyselina chlorovodíková, histidín a polyvinylalkohol. Zakončovacím elektrolytom je kyselina glutámová. Po zapojení jednosměrného elektrického prúdu nastáva migrácia aniónov jednotlivých zložiek leštirenského kúpela, kyseliny sírovej, kyseliny fluorovodíkovej a kyseliny fluorokremičitej a ich separácia do ostroohraničených zón, ktoré sa vplyvom jednosměrného elektrického prúdu pohybujú ku kladnej elektróde a pri svojom pohybe prechádzajú cez identifikačný vodivostný článok, ktorý na základe vodivosti a doby přechodu zóny vysiela elektrický signál, ktorý sa vedie na zapisovací přístroj. Týmto sposobom sa stanoví obsah síranov v kyselině sírovej a celkový obsah fluoridov prislúchajúcich kyselině fluorovodíkovej a kyselme fluorokremičitej. Obsah fluoridov v kyselme fluorovodíkovej určíme tak, že zo vzorky leštirenského kúpela pomocou elektrolytu a hydroxidu draselného sa vyzrážajú a odfiltrujú fluoridy prislúchajúce kyselině fluorokremičitej vo formě fluorokremičitanu draselného a takto upravená vzorka sa vnesie na rozhranie vodiaceho a zakončovaeieho elektrolytu. Vodiacim elektrolytom je kyselina chlorovodíková, histidín a polyvinylalkohol, zakončovacím elektrolytom je kyselina glutámová. Po zapojení jednosměrného elektrického prúdu nastáva migrácia aniónov jednotlivých zložiek a ich separácia do· zón, ktoré sa vplyvom jednosměrného elektrického prúdu pohybujú ku kladnej elektróde a pri svojom pohybe prechádzajú cez identifikačný vodivostný článok, ktorý na základe vodivosti a doby přechodu zóny vysiela elektrický signál, ktorý sa vedie na zapisovací přístroj. Takto sa získá integrálny záznam, kde dižka zón je priamo úměrná látkovým množstvám jednotlivých zložiek vzorky leštiarenského' kúpela, ktorý sa vyhodnotí pomocou kalibračných kriviek. Kalibračně křivky sú namerané zvlášť pre každú zložku a za rovnakých podmienok ako analyzovaná vzorka leštiarenského kúpela. Obsah fluoridov prislúchajúcich kyselině fluorokremičitej sa stanoví ako· rozdiel medzi celkovým obsahom fluoridov a obsahom fluoridov· v kyselině fluorovodíkovej.The amount of sulfuric acid, hydrofluoric acid and fluorosilicic acid in the polishing bath is determined when analyzing the polishing bath. A sample of the polishing bath is diluted with redistilled water and neutralized with sodium hydroxide solution. The sample thus treated is applied to the interface of the lead electrolyte and the terminating electrolyte. The guide electrolyte is hydrochloric acid, histidine and polyvinyl alcohol. The terminal electrolyte is glutamic acid. After the direct current is connected, the anions of the individual components of the polishing bath, sulfuric acid, hydrofluoric acid and fluorosilicic acid migrate and their separation into sharp-edged zones, which move due to the direct current to the positive electrode and pass through the identification conductive cell. based on the conductivity and the transition time of the zone, it sends an electrical signal to the recorder. In this way, the sulphate content of the sulfuric acid and the total fluoride content of the hydrofluoric acid and the acid fluorosilicon are determined. The fluoride content of the hydrofluoric acid is determined by precipitating and filtering the fluoride associated with potassium silicate in the form of potassium fluorosilicate from the sample of the polishing bath using an electrolyte and potassium hydroxide, and introducing the treated sample at the interface of the conducting and terminating electrolyte. The lead electrolyte is hydrochloric acid, histidine and polyvinyl alcohol, and the terminal electrolyte is glutamic acid. Upon connection of the direct current, anion migration of the individual components and their separation into · zones, which move under the influence of direct current to the positive electrode and as they move through an identification conductive cell, which, based on the conductivity and transition time of the zone is fed to a recorder. In this way, an integral record is obtained where the zone length is directly proportional to the substance amounts of the individual components of the polishing bath sample, which is evaluated by calibration curves. Calibration curves are measured separately for each component and under the same conditions as the analyzed polishing bath sample. The fluoride content of fluorosilicic acid is determined as the difference between the total fluoride content and the fluoride content of hydrofluoric acid.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS846413A CS244975B1 (en) | 1984-08-24 | 1984-08-24 | Analyzing method of polishing baths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS846413A CS244975B1 (en) | 1984-08-24 | 1984-08-24 | Analyzing method of polishing baths |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS641384A1 CS641384A1 (en) | 1985-11-13 |
| CS244975B1 true CS244975B1 (en) | 1986-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS846413A CS244975B1 (en) | 1984-08-24 | 1984-08-24 | Analyzing method of polishing baths |
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| Country | Link |
|---|---|
| CS (1) | CS244975B1 (en) |
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1984
- 1984-08-24 CS CS846413A patent/CS244975B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS641384A1 (en) | 1985-11-13 |
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