Determination of the iodine value of biodiesel using 1H NMR with 1,4-dioxane as an internal standard

被引：18

作者：

Oromi-Farrus, Mireia ^{[1
]}

Villorbina, Gemma ^{[1
]}

Eras, Jordi ^{[1
]}

Gatius, Ferran ^{[1
]}

Torres, Merce ^{[2
]}

Canela, Ramon ^{[1
]}

机构：

[1] Univ Lleida, Dept Chem, Lleida 25198, Spain

[2] Univ Lleida, Dept Food Technol, UTPV Certa, Lleida 25198, Spain

来源：

FUEL | 2010年 / 89卷 / 11期

关键词：

Biodiesel; Iodine value; H-1 NMR spectroscopy; Internal standard; NUCLEAR-MAGNETIC-RESONANCE; OILS; FATS; SPECTROSCOPY; UNSATURATION;

D O I：

10.1016/j.fuel.2010.06.016

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Iodine values (IVs) of some biodiesel samples were analyzed using both H-1 NMR and a standard iodometric method. H-1 NMR was carried out with and without 1,4-dioxane as an internal standard (IS). The results obtained using H-1 NMR with 1,4-dioxane as an internal standard showed better linear fitting and correlation with the iodometric method than NMR without the IS. The proposed H-1 NMR_IS method allows determination of the IV using smaller samples than the iodometric method. Moreover, the determination can be carried out in less than 15 min, dramatically less than the time needed to carry out the iodometric method. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3489 / 3492

页数：4

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