SU401919A1 - Method for the determination of chlorine dioxide in air - Google Patents
Method for the determination of chlorine dioxide in airInfo
- Publication number
- SU401919A1 SU401919A1 SU1612177A SU1612177A SU401919A1 SU 401919 A1 SU401919 A1 SU 401919A1 SU 1612177 A SU1612177 A SU 1612177A SU 1612177 A SU1612177 A SU 1612177A SU 401919 A1 SU401919 A1 SU 401919A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- air
- chlorine dioxide
- determination
- silica gel
- organic reagent
- Prior art date
Links
Description
Изобретение относитс к аналитической химии .This invention relates to analytical chemistry.
Известен способ определени двуокиси хлора в воздухе с помощью индикаторной трубки с инертным носителем, например силикагелем , обработанным органическим реагентом, например NNNN - тетрафенилбензидином.A known method for determining chlorine dioxide in air is carried out using an indicator tube with an inert carrier, for example silica gel, treated with an organic reagent, for example NNNN - tetraphenylbenzidine.
При использовании этого реагента не достигаетс высока чувствительность определени .When using this reagent, the detection sensitivity is not high.
Предлагаемый способ отличаетс от известного тем, что в качестве органического реагента используют сол нокислый раствор ортодианизидина . При этом чувствительность анализа увеличиваетс в 50 раз и повышаетс воспроизводимость результатов. Инертный носитель , например зерна силикагел , диаметром 0,4-0,5 мм, отбеливают сол ной кислотой , разбавленной 1:1, промывают водой до получени отрицательной реакции на хлор, прокаливают при 750°С в течение трех часов. Затем очищенный силикагель обрабатываютThe proposed method differs from the known one in that an orthodianisidine hydrochloride solution is used as an organic reagent. At the same time, the sensitivity of the analysis is increased 50 times and the reproducibility of the results increases. An inert carrier, such as silica gel granules, 0.4-0.5 mm in diameter, is bleached with hydrochloric acid, diluted 1: 1, washed with water until a negative reaction to chlorine is obtained, and calcined at 750 ° C for three hours. Then purified silica gel is treated
подкисленным (0,008 %-ным) раствором ортодианизидина из расчета: на Ч г силикагел 1,2мл реактивного раствора и сущат при 35- 40°С. Высушенный порошок помещают в индикаторную трубку, через которую пропускают 800мл воздуха в течение 40 мин с помощью воздухозаборного устройства. О концентрации двуокиси хлора суд т по шкале, приготовленной по образцам, содержащим от О до 6 мг/м двуокиси хлора.an acidified (0.008%) solution of orthodianisidine based on the calculation: 1.2 ml of a reactive solution per silica gel per hour and is present at 35-40 ° C. The dried powder is placed in an indicator tube through which 800 ml of air is passed for 40 minutes using an air intake device. The concentration of chlorine dioxide is judged on a scale prepared from samples containing from O to 6 mg / m of chlorine dioxide.
Предмет изобретени Subject invention
Способ определени двуокиси хлора в воздухе с помощью индикаторной трубки с инертным носителем, например силикагелем, обработанным органическим реагентом, отличающийс тем, что, с целью повышени чувствительности анализа, в качестве органического реагента используют сол нокислый раствор ортодианизидина.A method for determining chlorine dioxide in air using an indicator tube with an inert carrier, such as silica gel, treated with an organic reagent, characterized in that, in order to increase the sensitivity of the assay, hydrochloride orthodianisidine is used as an organic reagent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1612177A SU401919A1 (en) | 1971-01-19 | 1971-01-19 | Method for the determination of chlorine dioxide in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1612177A SU401919A1 (en) | 1971-01-19 | 1971-01-19 | Method for the determination of chlorine dioxide in air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU401919A1 true SU401919A1 (en) | 1973-10-12 |
Family
ID=20463793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1612177A SU401919A1 (en) | 1971-01-19 | 1971-01-19 | Method for the determination of chlorine dioxide in air |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU401919A1 (en) |
-
1971
- 1971-01-19 SU SU1612177A patent/SU401919A1/en active
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