SU91849A1 - Method for determining potassium content in soils and fertilizers - Google Patents
Method for determining potassium content in soils and fertilizersInfo
- Publication number
- SU91849A1 SU91849A1 SU2678A SU2678A SU91849A1 SU 91849 A1 SU91849 A1 SU 91849A1 SU 2678 A SU2678 A SU 2678A SU 2678 A SU2678 A SU 2678A SU 91849 A1 SU91849 A1 SU 91849A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- soils
- fertilizers
- potassium content
- solution
- content
- Prior art date
Links
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title description 7
- 229910052700 potassium Inorganic materials 0.000 title description 7
- 239000011591 potassium Substances 0.000 title description 7
- 239000002689 soil Substances 0.000 title description 5
- 239000003337 fertilizer Substances 0.000 title description 4
- 239000000243 solution Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052803 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- ZVLZZJUHYPMZAH-UHFFFAOYSA-L [Co+2].[O-]N=O.[O-]N=O Chemical compound [Co+2].[O-]N=O.[O-]N=O ZVLZZJUHYPMZAH-UHFFFAOYSA-L 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N Cobalt(II) nitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- CGOSIVYNVKVZBK-UHFFFAOYSA-K [Na+].[Co++].[O-]N=O.[O-]N=O.[O-]N=O Chemical compound [Na+].[Co++].[O-]N=O.[O-]N=O.[O-]N=O CGOSIVYNVKVZBK-UHFFFAOYSA-K 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
Description
Кобальт-нитритные способы оиределеНШ1 кали в почвах и удобрени х давно известны. Но все эти способы сложны.Cobalt-nitrite methods of potassium ourelSH1 in soils and fertilizers have long been known. But all these methods are complex.
Предлагаемый способ предназначен упростить методику определени кали в почвах и удобрени х. Он заключаетс в том, что осадок комплексной соли, полученной от введени в иснытуемый раствор кобальт-нитрита, обрабатывают сол ной кислотой и содой, подогревают раствор до полного растворени осадка и кодориметрируют, определ содержание кобальта, а но нему определ ют содержание кали .The proposed method is intended to simplify the method for determining potassium in soils and fertilizers. It consists in the fact that the precipitate of the complex salt obtained from the introduction of cobalt-nitrite into the test solution is treated with hydrochloric acid and soda, the solution is heated to dissolve the precipitate and coded, the cobalt content is determined, but the potassium content is determined.
Предложенный способ относитс к следующему .The proposed method is as follows.
Навеску почвы 20 г. обливают 40 са нормального раствора NaCl и взбалтывают в течение 5 минут. Затем фильтруют II отбирают 10 см чистого фильтрата в пробирЕу-декантатор (см. чертеж) и добавл ют в него 1 см МазСО(Ыа2)б.A portion of the soil for 20 g is poured on 40 ° C of a normal NaCl solution and shaken for 5 minutes. Then filter II take 10 cm of pure filtrate into the test tube decanter (see drawing) and add 1 cm of MASCO (Na2) b to it.
Раствор отстаивают до тех нор, покаThe solution is settled as long as
осадок не опуститс на дно пробирки, а наверху останетс чистый раствор.the precipitate will not sink to the bottom of the tube, and a clear solution will remain at the top.
После декантации прозрачную часть раствора спускают через краник н оставл ют с осадком только 1 см жидкости. К осадку добавл ют 3 см НС1 (уд. вес 1,19) и 1 см 0,1 н. Ма2СОз, смесь подогревают до нолного растворени , охлаждают и колориметрируют в компараторе, определ содержание в растворе кобальта , а по нему - содержание кали .After decantation, the transparent part of the solution is drained through a tap and left with the sediment only 1 cm of liquid. To the precipitate were added 3 cm HCl (spd weight 1.19) and 1 cm 0.1 n. With Ma2CO3, the mixture is heated to complete dissolution, cooled and colorimetrated at the comparator, the content of cobalt in the solution is determined, and the content of potassium is determined according to it.
Предмет изобретени Subject invention
Способ определени содержани кали в почвах и удобрени х иосредством кобальт-нитрита натри , отличающийс тем, что, с целью упрощени хода анализа, осадок комплексной соли, полученной после введени в пспытуемьи раствор кобальт-нитрпта, обрабатывают сол ной кислотой и содой, подогревают раствор до полного растворени осадкд и колориметрируют, определ содержание кобальта, а по нему содержание кали .The method for determining the potassium content in soils and fertilizers and cobalt nitrite sodium, characterized in that, in order to simplify the course of the analysis, the precipitate of the complex salt obtained after adding cobalt nitrate to the solution, is heated with hydrochloric acid and soda, the solution is heated to complete dissolution of sediment and colorimetric, determined the content of cobalt, and on it the content of potassium.
В первой колонке, 9- строка снизу напечатано ситс .... С.челует чнтнть «Предложенный способ скодптс .... «Иоидложснный способ отноIn the first column, the 9th line of the bottom is printed, the Sits .... S. Chels a tnt "The proposed method is skodps ...."
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2678A SU91849A1 (en) | 1947-10-25 | Method for determining potassium content in soils and fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2678A SU91849A1 (en) | 1947-10-25 | Method for determining potassium content in soils and fertilizers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SU71835A1 SU71835A1 (en) | 1947-11-30 |
| SU91849A1 true SU91849A1 (en) | 1951-09-30 |
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