METHOD OF DETERMINING METHYL ALCOHOL IN WATER Russian patent published in 2006 - IPC G01N30/02 

Abstract RU 2273850 C2

FIELD: analytical methods.

SUBSTANCE: to determine methyl alcohol in water, sample to be assayed is preliminarily subjected to distillation with sulfuric acid added in amount required to provide its concentration in mixture to be distilled c(1/2 H2SO4) = 0.002 M, while strippings constitute 6-7% of the volume of sample. Stripped liquid is thrice rinsed with hexane or Nefras at 1:1 hexane (Nefras)-to-strippings ratio. Rinsed material is then introduced into packed column filled with diatomite modified with 1,2,3-tris(β-cyanoethoxy)propane having deposited fixed phase thereon, which phase is prepared by way of consecutively keeping glycerol each time for 4 h at ambient temperature, 100°C, 130°C, 160°C, and 200°C, and then for 8 h at 230°C and for 40 h at 200°C under nitrogen bubbling conditions. Calculation of methanol content is performed taking into consideration calibrating coefficient.

EFFECT: enabled determination of small concentrations of methyl alcohol in water with sufficient selectivity and reliability.

2 cl, 2 tbl, 6 ex

Similar patents RU2273850C2

Title Year Author Number
DETERMINATION OF METHANOL AND DIETHYLENE GLYCOL IN PROCESS LIQUIDS OF PROCESS OF DRYING FULL NATURAL GAS BY GAS CHROMATOGRAPHY METHOD IN CONDITIONS OF INTERFERING FACTOR OF GAS CONDENSATE 2023
  • Borisova Viktoriya Anatolevna
  • Kasyanenko Andrej Aleksandrovich
  • Mizin Petr Anatolevich
  • Moiseev Viktor Vladimirovich
RU2810686C1
METHOD FOR METHANOL DETERMINATION IN WATER 2015
  • Machulin Lev Viktorovich
RU2634260C2
METHOD OF ASSESSING METHYL ALCOHOL IN WATER 2000
  • Akhmetova T.I.
  • Gatijatullina L.Ja.
  • Galljamova Eh.I.
RU2175441C1
METHOD OF SIMULTANEOUS DETERMINATION OF DIEHTYLENE GLYCOL AND METHANOL IN NATURAL AND SEWAGE WATER BY METHOD OF LIQUID CHROMATOGRAPHY 2012
  • Korotkov Sergej Gennad'Evich
  • Ovchinnikova Elena Anatol'Evna
  • Mentov Evgenij Veniaminovich
  • Shalabaj Aleksej Valer'Evich
RU2491544C1
METHOD FOR DETERMINATION OF METHANOL IN WATER 0
  • Akhmetova Tanzilya Imamovna
  • Gallyamova Elvira Ibraimovna
  • Filippova Valentina Vasilevna
SU1735759A1
METHOD OF DETERMINING PENTAERYTHRITOL CONCENTRATION IN AQUEOUS SOLUTIONS 2014
  • Mikheeva Natal'Ja Mikhajlovna
RU2549918C1
METHOD FOR DETERMINING THE CONCENTRATION OF DIETHYLENE GLYCOL IN STABLE LIQUID HYDROCARBON FRACTIONS 2016
  • Tkachenko Igor Grigorevich
  • Shablya Sergej Gennadevich
  • Tvardievich Sergej Vyacheslavovich
  • Shatokhin Aleksandr Anatolevich
  • Geraskin Vadim Georgievich
  • Gorb Evgenij Pavlovich
  • Vasineva Marina Vladimirovna
RU2656132C2
METHOD FOR QUANTITATIVE DETERMINATION OF N-NITROSODIMETHYLAMINE AND N-NITROSODIETHYLAMINE IN BLOOD BY CAPILLARY GAS CHROMATOGRAPHY 2015
  • Zajtseva Nina Vladimirovna
  • Ulanova Tatjana Sergeevna
  • Nurislamova Tatjana Valentinovna
  • Popova Nina Anatolevna
  • Maltseva Olga Andreevna
  • Ershova Kristina Stanislavovna
RU2578026C1
METHOD OF DETERMINING MICROQUANTITIES OF ACETONITRILE IN WATER 1996
  • Akhmetova T.I.
  • Gizzatullin R.R.
  • Kijanenko G.V.
RU2105303C1
METHOD OF COMBINED IDENTIFICATION OF ACETONE AND METHANOL IN NATURAL AND SEWAGE WATERS WITH APPLICATION OF GAS CHROMATOGRAPHY 2013
  • Sobolevskaja Ljudmila Anatol'Evna
RU2552937C1

RU 2 273 850 C2

Authors

Akhmetova Tanzilja Imamovna

Kijanenko Galina Valer'Evna

Gatijatullina Lidija Jagofarovna

Sultanova Jazilja Mirsaifovna

Dates

2006-04-10Published

2004-06-29Filed