RU2008117552A - METHOD FOR DETERMINING ETHIONAMIDE - Google Patents
METHOD FOR DETERMINING ETHIONAMIDE Download PDFInfo
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- RU2008117552A RU2008117552A RU2008117552/15A RU2008117552A RU2008117552A RU 2008117552 A RU2008117552 A RU 2008117552A RU 2008117552/15 A RU2008117552/15 A RU 2008117552/15A RU 2008117552 A RU2008117552 A RU 2008117552A RU 2008117552 A RU2008117552 A RU 2008117552A
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- RU
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- analyte
- sample
- reference sample
- dimethyl yellow
- volumes
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
Способ количественного определения этионамида путем спектрометрирования определяемого вещества и стандартного образца сразнения, отличающийся тем, что спектрофотометрирование проводят при длине волны 318 нм, в качестве образца сравнения используют диметиловый желтый и расчет проводят по следующей формуле: ! , ! где Dx и Dвос - оптические плотности определяемого вещества и образца сравнения соответственно; ! ах и авос - точные навески определяемого вещества и образца сравнения соответственно; ! V1 и V2 - объёмы приготовленного раствора определяемого вещества; ! V3 - объём аликвоты определяемого вещества; ! V1′ и V2′ - объёмы приготовленного раствора образца сравнения; ! V3′ - объём аликвоты образца сравнения; ! 100 - коэффициент для пересчета в проценты; ! W - влажность, %; ! Kпер - коэффициент пересчета; ! коэффициент пересчета находят из выражения: ! , ! где Евос - удельный показатель поглощения образца сравнения диметилового желтого при аналитической длине волны; ! Еос - удельный показатель поглощения рабочего образца сравнения определяемого (исследуемого) вещества при аналитической длине волны (определяется при разработке методики); ! Кпер - по диметиловому желтому в 0,1 М растворе хлористоводородной кислоты равен 0,181.The method of quantitative determination of ethionamide by spectrometry of the analyte and the standard sample of the battle, characterized in that the spectrophotometry is carried out at a wavelength of 318 nm, dimethyl yellow is used as a comparison sample and the calculation is carried out according to the following formula:! ! where Dx and Dboc are the optical densities of the analyte and the reference sample, respectively; ! ah and avos - exact weights of the analyte and reference sample, respectively; ! V1 and V2 are the volumes of the prepared solution of the analyte; ! V3 is the volume of an aliquot of the analyte; ! V1 ′ and V2 ′ are the volumes of the prepared solution of the reference sample; ! V3 ′ is the aliquot volume of the reference sample; ! 100 - coefficient for conversion to percent; ! W - humidity,%; ! Kper - conversion factor; ! the conversion factor is found from the expression:! ! where Evos is the specific absorption coefficient of the dimethyl yellow comparison sample at the analytical wavelength; ! EOS - the specific absorption rate of the working sample of the comparison of the determined (investigated) substance at the analytical wavelength (determined during the development of the method) ! Nper - dimethyl yellow in a 0.1 M solution of hydrochloric acid is 0.181.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008117552/15A RU2389012C2 (en) | 2008-04-30 | 2008-04-30 | Method for determining ethionamide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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RU2008117552/15A RU2389012C2 (en) | 2008-04-30 | 2008-04-30 | Method for determining ethionamide |
Publications (2)
Publication Number | Publication Date |
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RU2008117552A true RU2008117552A (en) | 2009-11-10 |
RU2389012C2 RU2389012C2 (en) | 2010-05-10 |
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Application Number | Title | Priority Date | Filing Date |
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RU2008117552/15A RU2389012C2 (en) | 2008-04-30 | 2008-04-30 | Method for determining ethionamide |
Country Status (1)
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RU (1) | RU2389012C2 (en) |
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- 2008-04-30 RU RU2008117552/15A patent/RU2389012C2/en not_active IP Right Cessation
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Publication number | Publication date |
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RU2389012C2 (en) | 2010-05-10 |
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Effective date: 20130501 |