SU100696A1 - Method for photocolorimetric quantification of calcium in solution - Google Patents

Method for photocolorimetric quantification of calcium in solution

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Publication number
SU100696A1
SU100696A1 SU449934A SU449934A SU100696A1 SU 100696 A1 SU100696 A1 SU 100696A1 SU 449934 A SU449934 A SU 449934A SU 449934 A SU449934 A SU 449934A SU 100696 A1 SU100696 A1 SU 100696A1
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SU
USSR - Soviet Union
Prior art keywords
calcium
solution
photocolorimetric
quantification
order
Prior art date
Application number
SU449934A
Other languages
Russian (ru)
Inventor
Е.И. Никитина
Original Assignee
Е.И. Никитина
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.)
Filing date
Publication date
Application filed by Е.И. Никитина filed Critical Е.И. Никитина
Priority to SU449934A priority Critical patent/SU100696A1/en
Application granted granted Critical
Publication of SU100696A1 publication Critical patent/SU100696A1/en

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  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Description

Известен способ определени  кальци  в различных материалах путем его осаждени  в виде оксалата объемным или весовым методом. Однако этим способом определ ть количества кальци  меньше 0,1% затруднительно .There is a method for determining calcium in various materials by precipitating it in the form of oxalate by bulk or weight method. However, this method is difficult to determine the amount of calcium less than 0.1%.

Онисываемый ниже способ отличаетс  от известных тем, что в качестве реагента в нем применен алюминон , который дает в слабощелочной среде цветную реакцию непосредственно с ионами кальци , образу  соединение , окрашенное в розовый цвет и позвол ющее определ ть содержание кальци  на фотоколориметре или визуально с использованием стандартной щкалы.The method described below differs from the known ones in that aluminon is used as a reagent, which gives a color reaction in the weakly alkaline medium directly with calcium ions, forming a pink colored compound that allows determining the calcium content on a photocolorimeter or visually using a standard sckal

Кальций определ ют в следуюп1,ем пор дке.Calcium is determined in the following order.

Хлористые соли кальци  выпаривают досуха дл  удалени  свободной минеральной кислоты. Сухой остаток раствор ют в гор чей воде и неревод т раствор в мерную колбу на 50 лгл, доливают водой до объема в 30 мл, и приливают 1 мл 0,2%-ного раствора алюминона и 10 мл 0,05 н раствора едкого натра. Все перемешивают , доливают водой до метки, снова перемешивают и оставл ют сто ть в течение 24 часов. ЧерезCalcium chloride salts are evaporated to dryness to remove free mineral acid. The dry residue is dissolved in hot water and the solution is not converted into a 50 lg volumetric flask, topped up with water to a volume of 30 ml, and 1 ml of a 0.2% aluminone solution and 10 ml of 0.05 N sodium hydroxide solution are added. Everything is stirred, made up to the mark with water, stirred again and left to stand for 24 hours. Through

24 часа измер ют интенсивность окраски на фотоколориметре. Содержание кальци  определ ют по калибровочной кривой.24 hours measure the color intensity on a photocolorimeter. Calcium content is determined by a calibration curve.

Измерение интенсивности можно вести также визуально методом стандартной шкалы.Intensity measurement can also be carried out visually using the standard scale method.

Описанным способом определ ют количество кальци  от 0,05 до 1,5 мг или от 0,005 до 1 %.Calcium is determined in the manner described above from 0.05 to 1.5 mg, or from 0.005 to 1%.

Снособ можно использовать дл  любых материалов и сплавов. Кальций в этих случа х отдел ют от других элементов в виде оксалата. Промытый осадок оксалата, сожженный до окиси кальци , раствор ют в сол ной кислоте, выпаривают досуха и далее ведут анализ вышеописанным пор дком.The tool can be used for any materials and alloys. Calcium in these cases is separated from other elements in the form of oxalate. The washed oxalate precipitate, burned to calcium oxide, is dissolved in hydrochloric acid, evaporated to dryness and then analyzed in the order described above.

И р е д м е т изобретени And the invention

Способ фотоколориметрического количественного определени  кальци  в растворе, о т л и ч а ю их и и с   тем, что, с целью об.чегчени  определени  кальци , содержап1,егос  в растворе в небольших количествах (пор дка 0,005-1%), в качестве реагента дл  получени  цветной реакции примен ют алюминон в с.пабощелочной среде.A method for photocolorimetric quantification of calcium in a solution, that is, in order to determine the calcium content in one solution, and in solution in small amounts (in the order of 0.005-1%), reagent to obtain a color reaction is used aluminon in C. alkaline environment.

SU449934A 1954-02-16 1954-02-16 Method for photocolorimetric quantification of calcium in solution SU100696A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU449934A SU100696A1 (en) 1954-02-16 1954-02-16 Method for photocolorimetric quantification of calcium in solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU449934A SU100696A1 (en) 1954-02-16 1954-02-16 Method for photocolorimetric quantification of calcium in solution

Publications (1)

Publication Number Publication Date
SU100696A1 true SU100696A1 (en) 1954-11-30

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SU449934A SU100696A1 (en) 1954-02-16 1954-02-16 Method for photocolorimetric quantification of calcium in solution

Country Status (1)

Country Link
SU (1) SU100696A1 (en)

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