SU963949A1 - Process for preparing indicator composition for detecting phosphine in air - Google Patents
Process for preparing indicator composition for detecting phosphine in air Download PDFInfo
- Publication number
- SU963949A1 SU963949A1 SU813273228A SU3273228A SU963949A1 SU 963949 A1 SU963949 A1 SU 963949A1 SU 813273228 A SU813273228 A SU 813273228A SU 3273228 A SU3273228 A SU 3273228A SU 963949 A1 SU963949 A1 SU 963949A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- air
- indicator composition
- phosphine
- preparing
- silica
- Prior art date
Links
Description
Изобретение относитс к способам приготовлени индикаторных составов, примен емых дл определени токсичных веществ в воздухе, и может быть использовано дл изготовлени индикаторного состава дл определени фосфина в воздухе производственных помещений химической и других отраслей промышленности.The invention relates to methods for preparing indicator compositions used for the determination of toxic substances in the air, and can be used to make an indicator composition for the determination of phosphine in the air of industrial premises of the chemical and other industries.
Известен способ приготовлени индикаторного состава дл определени фосфина в воздухе, по которому силикагель пропитывают раствором нитрата серебра и высушивают 11. Однако реакци фосфина с нитратом серебра малочувствительна и полученныйпо Такому способу индикаторный состав не применим дл определени фосфина в воздухе на уровне предельно допустимых концентраций.A known method of preparing an indicator composition for determining phosphine in air, by which silica gel is impregnated with silver nitrate solution and dried 11. However, the reaction of phosphine with silver nitrate is insensitive and the indicator composition prepared by this method is not applicable for determining phosphine in air at the level of maximum permissible concentrations.
Известен также другой способ приготовлени индикаторного состава ол определени фосфина в воздухе 2. По этому способу твердый носитель пропитывают с применЪнием соединений золота, что св зано с расходованием драгоценного металла.Another method of preparing an indicator composition of ol for the determination of phosphine in air 2 is also known. In this method, a solid carrier is impregnated using gold compounds, which is associated with the consumption of precious metal.
Наиболее близким к предлагаемому способу вл етс способ приготовлени инликаторного состава дл определени фосфина в воздухе, согласно которому с целью экономии золота твердый синтетический кремнезем пропитывают раствором хлорида ртути (.11) конго красного и хлорида кали и после сушки к.полученной массе добавл ют разбавитель - чистый кремнезем 3 .The closest to the proposed method is the method of preparing an inhibitor composition for determining phosphine in air, according to which, in order to save gold, solid synthetic silica is impregnated with a solution of mercury chloride (.11) of Congo red and potassium chloride and after drying to the obtained mass, add a thinner - pure silica 3.
10ten
Полученный по такому способу индикаторный состав не позвол ет выполнить анализы на фосфин с необходимой чувствительностью и точностью. Из-за невысокой чувствительности этоцо сос15 тава При использовании его.в ундикаторных трубках длина изменившей под действием фосфина окраску зоны слишком небольша . С другой стороны, чистый кремнезем плохо смешиваетс с об20 работанным раствором реагентов кремнеземом . При заполнении индикаторных трубок этим составом зерна чистого кремнезема выдел ютс на стенках трубок , в результате чего в случае низ25 ких концентраций фосфина в воздухе изменившаз окраску зона при малой длине неконтрастна, а граница ее раздела размыта.The indicator composition obtained by this method does not allow the analysis of phosphine with the required sensitivity and accuracy. Due to its low sensitivity, the ethozus stage is used. When using it in the indicator tubes, the length of the zone changed by the action of phosphine is too small. On the other hand, pure silica does not mix well with the processed silica reagent solution. When the indicator tubes are filled with this composition, pure silica grains are released on the walls of the tubes, as a result of which, in the case of low concentrations of phosphine in the air, the area changing color at a small length is not contrasting, and its interface is blurred.
Целью изобретени вл етс повы30 шение чувствительности индикаторногоThe aim of the invention is to increase the sensitivity of the indicator
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813273228A SU963949A1 (en) | 1981-02-17 | 1981-02-17 | Process for preparing indicator composition for detecting phosphine in air |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813273228A SU963949A1 (en) | 1981-02-17 | 1981-02-17 | Process for preparing indicator composition for detecting phosphine in air |
Publications (1)
Publication Number | Publication Date |
---|---|
SU963949A1 true SU963949A1 (en) | 1982-10-07 |
Family
ID=20952495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813273228A SU963949A1 (en) | 1981-02-17 | 1981-02-17 | Process for preparing indicator composition for detecting phosphine in air |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU963949A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4731333A (en) * | 1985-06-25 | 1988-03-15 | Japan Pionics., Ltd. | Method for detecting gaseous hydrides |
-
1981
- 1981-02-17 SU SU813273228A patent/SU963949A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4731333A (en) * | 1985-06-25 | 1988-03-15 | Japan Pionics., Ltd. | Method for detecting gaseous hydrides |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Morris et al. | The determination of nitrate in sea water | |
Hensley et al. | Spectrophotometric determination of fluoride with thorium chloranilate | |
SU963949A1 (en) | Process for preparing indicator composition for detecting phosphine in air | |
Greenhalgh et al. | An ion-exchange scheme for the determination of the major cations in sea water | |
Funazo et al. | Methylation of inorganic anions for gas chromatographic determination | |
JPS5633545A (en) | Method of quantitatively analyzing acid and total iron ion | |
SU1383192A1 (en) | Method of determining mono-substituted acetylene compounds | |
SU1242177A1 (en) | Method of determining quercitrol in rutin | |
SU967945A1 (en) | Indicator composition for detecting hydrogen chloride in air | |
Hamza et al. | Detection, quantitative collection and semiquantitative determination of bismuth (III) and zinc (II) in aqueous media using polyurethane foam treated with dithizone | |
SU1019298A1 (en) | Indicator compound for qualitative determination of chlorbenzene in air | |
Yonehara et al. | A New Colorimetric Method for the Determination of Minute Amounts of Bromide by Means of Its Catalytic Effect | |
Johansson et al. | Determination of mercury in urine | |
SU872452A1 (en) | Method of sulfite ion determination in standard sample | |
SU1116391A1 (en) | Method of photometric determination of vanadium | |
RU2183017C1 (en) | Indicator compound for determination of rhenium (vii) in aqueous solutions | |
RU2229125C1 (en) | Indicator composition to detect nickel (ii) in aqueous solutions | |
SU1658043A1 (en) | Method for determining cetylpyridinium in aqueous solutions | |
SU401919A1 (en) | Method for the determination of chlorine dioxide in air | |
SU941897A1 (en) | Cryolit determination method | |
SU486240A1 (en) | Method of converting nickel into a complex compound and an organic reagent | |
RU2078343C1 (en) | Indicator composition for determining hydrogen fluoride in gaseous phase | |
SU1737317A1 (en) | Method of iron determination | |
SU1168852A1 (en) | Method of determining nitrogen trichloride | |
SU580265A1 (en) | Method of determining lignin content in solutions obtained by chemical treatment of cellulose-containing materials |