Application of Modern Spectrophotometers for Determining the Amount of Phosphorus (V) Anhydride in Phosphoric Compounds

Akhtamova Maftuna Zaynitdin  qizi; Rahimova Gulrukh Siddiqovna

doi:10.47494/mesb.v18i.895

(1) Akhtamova Maftuna Zaynitdin qizi PhD student, Navoiy State Mining Institute
Uzbekistan
(2) Rahimova Gulrukh Siddiqovna Student of master degree, Navoiy State Mining Institute
Uzbekistan
(*) Corresponding Author

DOI:

https://doi.org/10.47494/mesb.v18i.895

Keywords:

UV-spectrophotometer, optical density, calibration graph, ammonium molybdate, citrate solution.

Abstract

In this article traditional and modern methods for determining phosphoric anhydride are compared and highlighted the advantages of modern UV spectrophotometer equipment for determining the optical density of substances using ultraviolet radiation.

The quantitative method to measure the concentration of a sample with unknown concentration from the absorption of a sample with known concentration is provided in two methods: The calibration curve method and the standard additive method. The UV-1280 spectrophotometer is designed for measurements in the wavelength range from 190 to 1100 nm and allows you to work in various modes: photometric, spectral, kinetic, quantitative, and biomedical. In particular, to determine the amount of phosphoric anhydride, its photometric model was chosen, and the wavelength was adjusted to 440 nm.

During the experiments, it turned out that almost all types of spectrophotometers can determine the optical density. The amount of P2O5 mg is determined using the graph and related formula. From the results of the following analysis, it can be seen that the value obtained when performing the indicators of both measuring instruments based on the same methodological manual does not differ significantly. This conclusion is also valid for FEK photoelectric colourimeters, which are considered a traditional method.

Downloads

Download data is not yet available.

References

Nurmurodov T.I., Axtamova M.Z. Fosforit xomashyosi asosida termofosfatlar olish jarayonining optimal sharoitlarini o’rganish. “Образование и наука в ХХI веке”. Научно-образовательний электронный журнал №7. РФ Кемеровская область. 2020г.

Крашенинников. С.А., Кузнецова А.Г. и др. Технический анализ и контроль в производстве неорганических веществ. Москва.:1968г.

Shimadzu Spectrophotometer UV-1280. Instruction Manual. 206-98410A. Feb. 2016.

ГОСТ 20851.2-75. Удобрения минеральные. Методы определения фосфатов. Москва: 1997г.

Нурмуродов Т.И., Ахтамова М.З., Турдиева О.Д., Каримов О.А. Переработка фосфоритов солями щелочных металлов для обогащения. Universum: технические науки. №12/81. Россия 2020 г.

Nurmurodov T.I., Akhtamova M.Z., Karimov O.A., Umarov S.S. Full Describing Of Microstructural Analysis of Low Grade Central Kyzylkum Phosphorites. Solid State technology. USA. Vol. 63 No. 5 (2020) 10457 – 10461 pages.

Левшина А.А., Ошерович Р.Х. Методы анализа фосфатного сырья, фосфорных и комплексных удобрений, кормовых фосфатов. М., «Химия», 1975г. 218с.

Nurmurodov T.I., Erkaev A.U., Khurramov N.I., Akhtamova M.Z., Bozorova N.N. Phosphor-calcium fertilizers on the basis of phosphate raw material of Central Kyzylkum. International Journal of Advanced Research in Science, Engineering and Technology .May 2018. Vol.5, Issue 5, p. 5841-5845.

Akhtamova M.Z. Thermal Activation of Phosphate Raw Materials in the Presence of Alkaline Salts. International journal on orange technology. Volume: 03 Issue: 9 |Sep 2021. https://journals.researchparks.org/index.php/IJOT.

Akhtamova M.Z. Synthesis thermophosphates on the basis of Central Kyzylkum phosphorites and alkali metals salts. Материалы Международной конференции по теме «Роль современной химии и инноваций в развитии национальной экономики». 27-29 мая 2021 г.ФарПИ. 2-том, 45с.

Нурмуродов Т.И., Ахтамова М.З. Использование ИК-спектроскопический метод при изучение термофосфатов полученные из фосфоритов Центральных Кызылкумов. Инновационные материалы и технологии – 2021.Материалы международной научно-технической конференции молодых ученых. БГТУ. г. Минск, Республика Беларусь.19-21 января 2021 г..С- 56-58.

Nurmurodov T.I., Akhtamova M.Z. Thermal-alkali fertilizers by low-grade phosphate mineral processing. Thermal-alkali fertilizers by low-grade phosphate mineral processing. ХVI International forum-contest of students and young researchers “Topical issues of rational use of natural resources”. Saint-Petersburg Mining University. 17-19 June 2020y. 201-203.

Нурмуродов Т.И., Ахтамова М.З.,Рахимова Г.С. Описание результатов термогравиметрических анализов термофосфатов полученных из фосфоритов Центрального Кызылкума. Universum: Химия и биология. №5(83).Россия 2021.