SU404003A1 - PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIR - Google Patents
PHOTO-COL.ORIMETRIC METHOD FOR DETERMINING BROM IN AIRInfo
- 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
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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)
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 |
Family
ID=20483135
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) |
-
1971
- 1971-07-12 SU SU1681915A patent/SU404003A1/en active
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