Quantitative and qualitative analysis of biodiesel by NMR spectroscopic methods

Biodiesel is an alternate renewable, biodegradable, non-toxic fuel similar to conventional fossil fuel. It usually produced from vegetable oil, animal fat, tallow, non-edible plant oil and waste cooking oil. Residue components by-products the production process or contamination during handling storage could affect quality of biodiesel. The molecular compositions biodiesel samples have been investigated by a combination NMR spectroscopic methods. use spectroscopy novel method characterisation implemented fully characterise assign structure identify quantify moieties molecules, particularly unsaturated long-chain alkyl esters. was also evaluate transesterification process; amount trans-esterified in amounts un-reacted different types glycerides. Furthermore, developed methanol proposed here as alternative official method.