SU1605195A1 - Method of determining lead - Google Patents
Method of determining lead Download PDFInfo
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- SU1605195A1 SU1605195A1 SU884462181A SU4462181A SU1605195A1 SU 1605195 A1 SU1605195 A1 SU 1605195A1 SU 884462181 A SU884462181 A SU 884462181A SU 4462181 A SU4462181 A SU 4462181A SU 1605195 A1 SU1605195 A1 SU 1605195A1
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- USSR - Soviet Union
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- sensitivity
- lead
- concentration
- hydrogen peroxide
- determination
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Изобретение относитс к способам определени свинца и может быть использовано при анализе природных и промышленных объектов с целью повышени чувствительности. Дл этого в кювету ввод т раствор пероксида водорода, нитрат свинца, бидистилл т, растворы 4-диэтиламинофталгидразида с концентрацией 2,5.10-3М и КОН с концентрацией 0,5 М. Оптимальна концентраци пероксида водорода (0,6 - 4,0).10-3М. Хемилюминесценцию измер ют при помощи ФЭУ, регистриру максимальную чувствительность свечени через 5 с от начала реакции. Содержание свинца наход т по градуировочному графику. Чувствительность определени PB 0,02 нг/мл. 1 табл.The invention relates to methods for determining lead and can be used in the analysis of natural and industrial objects with the aim of increasing sensitivity. For this purpose, a hydrogen peroxide solution, lead nitrate, bidistillate, solutions of 4-diethylaminophthalhydride with a concentration of 2.5 are introduced into the cuvette . 10 -3 M and KOH with a concentration of 0.5 M. Optimal concentration of hydrogen peroxide (0.6 - 4.0) . 10 -3 M. Chemiluminescence is measured using a photomultiplier, detecting the maximum sensitivity of light after 5 s from the start of the reaction. The lead content is found on the calibration curve. The sensitivity of PB determination is 0.02 ng / ml. 1 tab.
Description
Изобретение относитс к аналитической химии, а именно к способам определени свинца, и может быть использовано при анализе объектов окружающей среды, природных и сточных вод, пищевых продуктов и биологических объектов.The invention relates to analytical chemistry, and specifically to methods for determining lead, and can be used in the analysis of environmental objects, natural and waste waters, food products and biological objects.
Целью изобретени вл етс повышение чувствительности.The aim of the invention is to increase the sensitivity.
Пример. В кювету ввод т 0,5 мл 1, раствора , 0,25 нг РЬ(НОз)2, бидистилл т, исход из объема, 5 мл и смесь, содержащую 0,5 мл 2,5-1 4-диэтилами- нофталгидравида (ДЭАФГ) и 0,3 мл 0,5 М раствора КОН. Хемилюминесценцию измер ют при помощи ФЭУ, регистриру максимальную интенсивность свечени через 5 с от начала реакции.Содержание свинца наход т по гра:дуировочному графику. Чувствительность определени Example. 0.5 ml of solution 1, solution, 0.25 ng of Pb (NO3) 2, bidistillation, starting from volume, 5 ml and a mixture containing 0.5 ml of 2.5-1 4-diethylamino-hydravide ( DEAFG) and 0.3 ml of 0.5 M KOH solution. Chemiluminescence is measured using a photomultiplier, registering the maximum intensity of luminescence 5 s from the start of the reaction. The lead content is found in a graph. Detection sensitivity
РЬ 0,02 нг/мл. Градуировочньй график линеен в интервале концентраций 0,05-5,0 нг/мл РЬ.Pb 0.02 ng / ml. The calibration curve is linear in the concentration range of 0.05-5.0 ng / ml Pb.
В таблице представлены экспериментальные результаты чувствительности определени свинца при различной концентрации пероксида водорода.The table presents the experimental results of the sensitivity of the determination of lead at different concentrations of hydrogen peroxide.
Как следует из- представленных результатов , максимальна чувствительность определени свинца достигаетс при концентрации пероксида водорода (0,6-4,0). 10- м.As follows from the presented results, the maximum sensitivity of the determination of lead is achieved at a hydrogen peroxide concentration (0.6-4.0). 10 m.
Предлагаемый способ позвол ет повысить чувствительность определени : свинца в . 100 раз по сравнению с -известным .The proposed method improves the detection sensitivity: lead c. 100 times compared to the well-known.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884462181A SU1605195A1 (en) | 1988-07-21 | 1988-07-21 | Method of determining lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884462181A SU1605195A1 (en) | 1988-07-21 | 1988-07-21 | Method of determining lead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1605195A1 true SU1605195A1 (en) | 1990-11-07 |
Family
ID=21390455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884462181A SU1605195A1 (en) | 1988-07-21 | 1988-07-21 | Method of determining lead |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1605195A1 (en) |
-
1988
- 1988-07-21 SU SU884462181A patent/SU1605195A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 812719, кл. С 01 G 21/00, 1981. , * |
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