SU404003A1 - PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR - Google Patents

PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR

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Publication number
SU404003A1
SU404003A1 SU1681915A SU1681915A SU404003A1 SU 404003 A1 SU404003 A1 SU 404003A1 SU 1681915 A SU1681915 A SU 1681915A SU 1681915 A SU1681915 A SU 1681915A SU 404003 A1 SU404003 A1 SU 404003A1
Authority
SU
USSR - Soviet Union
Prior art keywords
air
determining
bromine
orimetric
brom
Prior art date
Application number
SU1681915A
Other languages
Russian (ru)
Inventor
А. Раков А.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1681915A priority Critical patent/SU404003A1/en
Application granted granted Critical
Publication of SU404003A1 publication Critical patent/SU404003A1/en

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  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Description

Изобретение относитс  к области газового анализа, а именно к колордмеТ|рич€ским способам определени  брома.The invention relates to the field of gas analysis, in particular to the Tortmund method for the determination of bromine.

Известен коло1римет.р.ический способ определени  б.рома в воздухе в присутствии хлора путем поглощени  брома раствором щелочи, взаимодействи  его с восстановлениьш стрихнином и колориметрировани  полученнОГО окрашенного соединени .A known method is for determining the amount of bromine in air in the presence of chlorine by absorbing bromine with an alkali solution, reacting it with the reduction of strychnine and colorimetating the resulting colored compound.

Этот способ однако характеризуетс  токсичностью и сложностью получени  реактива- восстановленного стрихнина.This method, however, is characterized by the toxicity and difficulty of producing reagent-reduced strychnine.

С целью упрощени.  .анализа и расширени  ассортимента реагентов на бром .предлагаетс  пр.имен ть в качестве колориметрическОГО реагента п-1аминофенол, предпочтительно в виде 0,1-0,2%-(ного водного раствора.In order to simplify. Analysis and expansion of the reagent assortment for bromine. It is proposed to name as colorimetric reagent p-1-aminophenol, preferably in the form of a 0.1-0.2% aqueous solution.

Примен емый реагент  вл етс  безвредным , дешевым и широко доступным. Чувствительность 1И точность определени  брома с ним не уступает чувствительности и точности известного способа, а врем  всего анализа, включа  отбор пробы, зани.мает 25-30 мин.The reagent used is harmless, cheap and widely available. The sensitivity of 1 and the accuracy of determination of bromine with it is not inferior to that of the known method, and the time of the entire analysis, including sampling, takes 25-30 minutes.

При,м«р. В два поглотительных прибора, соединенных последовательно, наливают по 20 мл 0,1%-ного водного раствор.а сернокислого л-аминафенола, про.пускают анализируемый воздух со скоростью 20 л1час до по влени  в первом поглотительном приборе  сного ф.иолетового окрашивани , сл.ивают растворы первого и второго поглотител  вместе в колбу с притертой пробкой, взбалтывают 15-20 сек :и определ ют оптическую плотность на фотоэлектроколориметре ФЭК-М при зелено.м светофильтре в кювете 50 мм. Содерж.ание брома в 1 мл раствора .наход т но заранее построенной градуированной кр.ивой зависимости оптической плотн.ости от содержани  брома.At, m "p. 20 ml of a 0.1% aqueous solution are poured into two absorbing devices connected in series, and l-aminophenol sulfate, the analyzed air is passed at a rate of 20 l for 1 hour until the first absorber of flue and violet staining appears in the first absorption device. The solutions of the first and second absorber are placed together in a flask with a ground in stopper, shaken for 15–20 s: and the optical density is determined on a FEK-M photoelectric colorimeter with a green light filter in a 50 mm cuvette. The content of bromine in 1 ml of the solution was found, but in advance of a graduated constructed curve of the total dependence of optical density on the content of bromine.

П р е д .м е т .изобретени PRED. M E T. INVENTIONS

Claims (2)

1.Ф.ото:колориметрический способ определени  брома в воздухе путем его погл.ошени  раствором реагента, образующего с 6pOiMO.M окрашенное соеди.нение, отличающийс  тем, что, с целью упрощени  анализа и расщирени  ассортимента реагентов на бром, в качестве реагента примен ют сернокислый и-ам.инофенол .1.Fototo: colorimetric method for determining bromine in air by absorbing it with a solution of a reagent forming a colored compound with 6pOiMO.M, characterized in that, to simplify the analysis and expansion of the assortment of reagents for bromine, it is used as a reagent sulphate i-am.inophenol are used. 2.Способ по п. .,1, отличающийс  тем, что серно.кислый п-аминофенол при.мен ют в виде 0,1-0,2%-.ног.о водного раствора.2. A method according to claim. 1, characterized in that the sulphate p-aminophenol is added in the form of a 0.1-0.2% - foot solution of an aqueous solution.
SU1681915A 1971-07-12 1971-07-12 PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR SU404003A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1681915A SU404003A1 (en) 1971-07-12 1971-07-12 PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1681915A SU404003A1 (en) 1971-07-12 1971-07-12 PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR

Publications (1)

Publication Number Publication Date
SU404003A1 true SU404003A1 (en) 1973-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1681915A SU404003A1 (en) 1971-07-12 1971-07-12 PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR

Country Status (1)

Country Link
SU (1) SU404003A1 (en)

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