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Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media

Elena Kardash
Yakov I. Tur'yan

Puni tekst: engleski, pdf (82 KB) str. 99-103 preuzimanja: 38.305* citiraj
APA 6th Edition
Kardash, E. i Tur'yan, Y.I. (2005). Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media. Croatica Chemica Acta, 78 (1), 99-103. Preuzeto s https://hrcak.srce.hr/2797
MLA 8th Edition
Kardash, Elena i Yakov I. Tur'yan. "Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media." Croatica Chemica Acta, vol. 78, br. 1, 2005, str. 99-103. https://hrcak.srce.hr/2797. Citirano 25.02.2021.
Chicago 17th Edition
Kardash, Elena i Yakov I. Tur'yan. "Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media." Croatica Chemica Acta 78, br. 1 (2005): 99-103. https://hrcak.srce.hr/2797
Harvard
Kardash, E., i Tur'yan, Y.I. (2005). 'Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media', Croatica Chemica Acta, 78(1), str. 99-103. Preuzeto s: https://hrcak.srce.hr/2797 (Datum pristupa: 25.02.2021.)
Vancouver
Kardash E, Tur'yan YI. Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media. Croatica Chemica Acta [Internet]. 2005 [pristupljeno 25.02.2021.];78(1):99-103. Dostupno na: https://hrcak.srce.hr/2797
IEEE
E. Kardash i Y.I. Tur'yan, "Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media", Croatica Chemica Acta, vol.78, br. 1, str. 99-103, 2005. [Online]. Dostupno na: https://hrcak.srce.hr/2797. [Citirano: 25.02.2021.]

Sažetak
A new method of acid value determination in vegetable oils has been developed. The method isbased on (a) simple, rapid and complete extraction of acids from an oil test portion into reagent(0.05 mol dm–3 triethanolamine (B) in the mixture of 50 % H2O + 50 % 2-PrOH) and (b) indirecttitration of acids in BH+ form against aqueous alkali in the presence of a phenolphthaleinindicator. Suitable metrological parameters of acid value determination have been obtained.The advantages of the method are (i) absence of a toxic solvent, (ii) extraction and titration ofacids at room temperature, and (iii) no need for preliminary neutralization of acid admixturesin a solvent.

Ključne riječi
acid value; vegetable oils; indirect titration

Hrčak ID: 2797

URI
https://hrcak.srce.hr/2797

[hrvatski]

Posjeta: 39.129 *