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Determinarea potasiului prin metoda spectroscopiei de emisie

Authors: Sîtari, V.; Mazur, E.A.;

Determinarea potasiului prin metoda spectroscopiei de emisie

Abstract

Introducere. Conform OMS Organizația Mondială a Sănătății deficiența mineralelor esențiale ca potasiu, prezintă un pericol de viață. Circa 20% pacienți staționari și 40% de ambulator suferă de hipokaliemie nivelul potasiului sub 3,5 mqv/l. Datorită necesității evidențierii unei metode de determinare cantitativă a potasiului am realizat un studiu bibliografic de comparație. Cea mai sensibilă metodă tinde a fi metoda spectroscopiei de emisie atomică SEA cu limita de detecție a potasiului de 0,07 mu;g. Scopul lucrării. Determinarea celor mai avantajoase și eficiente metode în analiza potasiului din lichide biologice și medicamente. Material și metode. Studiu, analiza și sinteza datelor literaturii mondiale privind metodele de determinare cantitativă a potasiului. Rezultate. Pentru a concluziona care metodă poate fi mai efectivă s-a facut un studiu comparativ dintre câteva metode fizico-chimice: Spectrofotometria de Absorbție Atomică SAA, SEA și Electroforeza Capilară EC. Din cauza detecției doar a unui element, SAA își pierde din eficacitate. La compararea ulterioară pentru SEA și EC au fost obținute următoarele rezultate: pentru SEA abaterea standard S fiind de 6.17% pentru 3 determinări, testul texp testul comparării a două metode de determinare cantitativă ce au aceeași precizie este 1.10, tteor=2.45. Pentru electroforeza capilară S=2% pentru 5 determinări, texp=1.10, tteor=2.45. Concluzii. Între două metode propuse, nu există diferențe semnificative ceea ce demonsetrează ca ambele metode sunt efective. Totuși, în cazul SEA ndash; partea organică/ biologică nu interferă, se arde folosind sistemul de combustie.

Introduction. According to the WHO world health organisation, potassium deficiency is life threatening. About 20% stationary patiens and 40% ambulatory patiens suffer from hipokaliemia. It is very important to figure out the highlightmethod for potassium quantitative determination, therefore I realized advancedcomparative bibliographic study. The most sensitive method belongs to Atomic Emission Spectroscopy AES with the detection limit of potassium is 0,07 mu;g. The aim of the study. Determination of the most advantageous and efficient method for potassium analysis from biological liquids and drugs. Material and methods. The advanced bibliographic study and analysis of data using the literature based on potassium assay methods. Results. The comparative study was made between several methods: Atomic Absorbtion Spectroscopy AAS, AES and Capillary Electrophoresis CE. Due to the detection of only one single element, AES loses its effectiveness. In the subsequent comparison of AES and CE, were`ve obtained the following results: for AES, standard deviation SD is 1.9% for 3 samples, the texp test the test of comparison of two methods of quantitative determination with the same precision is 1.10, tteor =2.45. For capillary electrophoresis: SD=2% for 5 samples, tesp=1.10, tteor=2.45. Conclusions. Between two proposed methods there are not significant differences, which shows that both methods are effective. However, in case of AES, the organic/ biological part does not interfere, when we use the combustion system.

Country
Moldova (Republic of)
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Keywords

SEA, AES, potasiul, potassium, metode cantitative, quantitative methods

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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