SU1518735A1 - Method of determining cyanates in waste water - Google Patents
Method of determining cyanates in waste water Download PDFInfo
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- SU1518735A1 SU1518735A1 SU874251824A SU4251824A SU1518735A1 SU 1518735 A1 SU1518735 A1 SU 1518735A1 SU 874251824 A SU874251824 A SU 874251824A SU 4251824 A SU4251824 A SU 4251824A SU 1518735 A1 SU1518735 A1 SU 1518735A1
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- SU
- USSR - Soviet Union
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- cyanates
- determining
- waste water
- solution
- detection sensitivity
- Prior art date
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Abstract
Изобретение относитс к способам определени цианатов в сточных водах после обезвреживани их хлорпродуктами и позвол ет повысить чувствительность определени в 10 раз. Способ включает введение в анализируемый раствор хлоридно-сол нокислого буфера, соли железа (Ш) и последующее фотометрирование раствора. Чувствительность определени 20 мг/л.The invention relates to methods for the determination of cyanates in wastewater after their disposal by chlorine products and makes it possible to increase the detection sensitivity by a factor of 10. The method includes the introduction of chloride hydrochloride buffer, iron salt (III) into the analyzed solution and the subsequent photometry of the solution. Detection sensitivity 20 mg / l.
Description
Изобретение относитс к аналити- : ческой химии и может быть использовано при анализе сточных вод после обезвреживани в них цианидов хлор- продуктами, а также в различных технологических исследовани х дл контрол за ходом обезвреживани .The invention relates to analytical and chemical chemistry and can be used in the analysis of wastewater after the neutralization of cyanide in them with chlorine products, as well as in various technological studies to monitor the progress of neutralization.
Цель изобретени - повышение чувствительности анализа.The purpose of the invention is to increase the sensitivity of the analysis.
Пример. В мерные колбы вместимостью 50 мл внос т 20 мл анализируемой сточной воды. Добавл ют 1 мл буферного раствора, содержащего в 1 л 250 мл 0,2 М раствора хлорида кали , 33,5 мл раствора сол ной кислоты с концентрацией 0,2 М, довод т до метки, перемешивают и через 20 мин измер ют оптическую плотность в кювете 10 мм, примен светофильтр с областью пропускани ОО им.Example. 20 ml of the analyzed waste water is introduced into 50 ml volumetric flasks. 1 ml of a buffer solution containing 250 ml of a 0.2 M potassium chloride solution in 1 liter, 33.5 ml of a 0.2 M hydrochloric acid solution is added to 1 liter, made up to the mark, mixed and after 20 min the optical density in a cuvette of 10 mm, using a filter with a transmission area of the OO im.
В воде обнаружено 38,0 мг/л циа- нов (введено А2,0 мг/л). Известным38.0 mg / l of cyans was detected in water (A2.0 mg / l was introduced). Famous
способом определить цианат-ионы невозможно из-за недостаточной чувствительности способа.the way to determine cyanate ions is impossible due to the lack of sensitivity of the method.
Хлоридно-сол но-кислый буферный раствор преп тствует образованию осадка гидроксида железа.The hydrochloric acid buffer solution prevents the formation of iron hydroxide precipitate.
Чувствительность определени 20 мг/л. Чувствительность определени в известном способе 200 мг/л, .Detection sensitivity 20 mg / l. The sensitivity of the determination in the known method is 200 mg / l,.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874251824A SU1518735A1 (en) | 1987-05-29 | 1987-05-29 | Method of determining cyanates in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874251824A SU1518735A1 (en) | 1987-05-29 | 1987-05-29 | Method of determining cyanates in waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1518735A1 true SU1518735A1 (en) | 1989-10-30 |
Family
ID=21306930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874251824A SU1518735A1 (en) | 1987-05-29 | 1987-05-29 | Method of determining cyanates in waste water |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1518735A1 (en) |
-
1987
- 1987-05-29 SU SU874251824A patent/SU1518735A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Лурье Ю.Ю. Аналитическа хими промышленных сточных вод. М,: Хими , 198 с.96-98. Авторское свидетельство СССР ff 570821, кл. G 01 N 21/43, 1977. * |
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