Goloperov, I. V., Baklanov, A. N., & Baklanova, L. V.
Accelerated determination of waste-insulated substances in cooked salt. |
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Full Article: PDF
Scientific Object Identifier: http://s-o-i.org/1.1/TAS-04-72-17
DOI: https://dx.doi.org/10.15863/TAS.2019.04.72.17
Language: Russian
Citation: Goloperov, I. V., Baklanov, A. N., & Baklanova, L. V. (2019). Accelerated determination of waste-insulated substances in cooked salt. ISJ Theoretical & Applied Science, 04 (72), 101-108. Soi: http://s-o-i.org/1.1/TAS-04-72-17 Doi: https://dx.doi.org/10.15863/TAS.2019.04.72.17 |
Pages: 101-108
Published: 30.04.2019
Abstract: A method is proposed for the rapid determination of substances insoluble in the input in salt, comprising the following stages: 1) weighing salt with a viscosity of up to 0.0002 g; 2) the dissolution of salt in distilled water under the action of ultrasound with a frequency of 18-44 kHz, an intensity of 1.4-3.5 W / cm2 for 20-25 s .; 3) quantitative transfer of water-insoluble substances to the “blue ribbon” filter paper with hot (60-70 ° С) washing with distilled water until no reaction to chlorine (test with silver nitrate); 4) washing the filter with a precipitate of 30 ml of acetone of acetone under the simultaneous action of ultrasound with a frequency of 20-50 kHz, an intensity of 0.4-0.7 W / cm2 and ultrasound with a frequency of 1.0-2.5 MHz, an intensity of 0.5-0, 7 W / cm2 for at least 1 min; 5) drying the filter with sediment in a drying cabinet at a temperature of 57-60 ° C for 15 minutes; 6) cooling to room temperature in a desiccator and weighing with an accuracy of 0.0002 g. Analysis time is 31 - 34 min, depending on the type of table salt.
Key words: salt, ultrasound, frequency, intensity, acetone, filter, water-insoluble substances.
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