SU128191A1 - Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury - Google Patents

Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury

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Publication number
SU128191A1
SU128191A1 SU633701A SU633701A SU128191A1 SU 128191 A1 SU128191 A1 SU 128191A1 SU 633701 A SU633701 A SU 633701A SU 633701 A SU633701 A SU 633701A SU 128191 A1 SU128191 A1 SU 128191A1
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SU
USSR - Soviet Union
Prior art keywords
calcium
magnesium
titration
mercury
zinc
Prior art date
Application number
SU633701A
Other languages
Russian (ru)
Inventor
Л.А. Вольф
Original Assignee
Л.А. Вольф
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Л.А. Вольф filed Critical Л.А. Вольф
Priority to SU633701A priority Critical patent/SU128191A1/en
Application granted granted Critical
Publication of SU128191A1 publication Critical patent/SU128191A1/en

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Description

Известен способ трилонометрического титровани  магни  и кальци  в присутствии свинца, цинка и ртути с применением в качестве маскирующих свинец, цинк и ртуть реагентов: сульфида натри , цианида, димеркаптопропанола .A known method of trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury using reagents such as sodium sulfide, cyanide, dimercaptopropanol as masking lead, zinc and mercury.

Описываемый опособ .трилонометрического титровани  магни  к кальци  по сравнению с известным ускор ет анализ, устран ет возможность соосаждени  магни  и кальци  с осадками и не требует применени  токсичных реагентов.The described magnesium titration of calcium to calcium, as compared with the known, accelerates the analysis, eliminates the possibility of coprecipitation of magnesium and calcium with precipitates and does not require the use of toxic reagents.

Особенность способа заключаетс  в том, что в качестве маскирующего реагента примен ют 2,3-димеркаптопропансульфонат натри  (унитиол).A feature of the method is that sodium 2,3-dimercaptopropanesulfonate (unithiol) is used as a masking agent.

Дл  осуществлени  способа к 5 мл 0,01 п. раствора Са или Mg + добавл ют 5 мл 0,01 н. раствора , Pb- и . Или к смеси 5 мл 0,01 н. раствора Са и 5 мл 0,01 п. раствора Mg добавл ют Е мл 0,01 н. раствора , или , или смесь (по 5 мл) 0,01 н. растворов Hg + и РЬ2+ + Zn2+ . После прибавлени  в каждую из приготовленных проб по 10-20 мл 0,25%-ного раствора унитиола, по 5 мл буферного раствора (350 мл 25%-ного раствора аммиака и 54 г хлористого аммони  -в 1 л), по 10 капель индикатора (0,4%-ного спиртового раствора хромогена черного) и доведени  объема каждой пробы до 100 мл дистиллированной водой, провод т титрование 0,01 п. раствором трилона Б до перехода окраски индикатора от винно-красной в, синию.For carrying out the process, 5 ml of 0.01 n is added to 5 ml of a 0.01 p. Solution of Ca or Mg +. solution, Pb- and. Or to a mixture of 5 ml 0.01 n. Ca solution and 5 ml of 0.01 p. Mg solution are added with E ml of 0.01 n. solution, or, or a mixture (5 ml) 0.01 n. Hg + and Pb2 + + Zn2 + solutions. After adding 10-20 ml of a 0.25% solution of unithiol to each prepared sample, 5 ml of a buffer solution (350 ml of a 25% ammonia solution and 54 g of ammonium chloride in 1 l), 10 drops of the indicator (0.4% alcoholic solution of the black chromogen) and bringing the volume of each sample to 100 ml with distilled water, titration with 0.01 p. Of Trilon B solution is carried out until the indicator turns from wine-red to blue.

При титровании в присутствии унитиола ртуть, свинец и цинк трилоном Б не оттитровываютс  и таким образом кальций и магний определ ютс  пр мым титрованием трилоном Б.When titrated in the presence of unithiol, mercury, lead, and zinc are not titrated with Trilon B, and thus calcium and magnesium are determined by direct titration with Trilon B.

№ 128191- 2 -No. 128191-2 -

Предмет изобретени Subject invention

Способ трилонометрического титровани  магни  и кальци  в присутствии свинца, цинка и ртути, отличающийс  тем, что, с целью ускорени  анализа, устранени  возможности соосаждени  магни  и кальци  с осадками и устранени  токсичности, в качестве маскирующего реагента примен ют 2,3-димеркаптопропансульфонат натри  (унитиол).The method of trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury, characterized in that, in order to speed up the analysis, eliminate the possibility of magnesium and calcium co-precipitation with sediments and eliminate toxicity, sodium 2,3-dimercaptopropanesulfonate (unitiol) is used as a masking agent. ).

SU633701A 1959-07-13 1959-07-13 Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury SU128191A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU633701A SU128191A1 (en) 1959-07-13 1959-07-13 Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU633701A SU128191A1 (en) 1959-07-13 1959-07-13 Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury

Publications (1)

Publication Number Publication Date
SU128191A1 true SU128191A1 (en) 1959-11-30

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Application Number Title Priority Date Filing Date
SU633701A SU128191A1 (en) 1959-07-13 1959-07-13 Method for trilonometric titration of magnesium and calcium in the presence of lead, zinc and mercury

Country Status (1)

Country Link
SU (1) SU128191A1 (en)

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