Abstract
AbstractGiven the critical need to address smuggling and unauthorised usage of subsidised diesel, the Malaysia Government introduced fuel marking for subsidised diesel under the NanoTag Program in April 2006. NanoTag markers mixture consists of VisioTag (dye) and NanoTag (immunoassay marker) were spiked into palm methyl esters (PME) and its diesel blends. The blending ratio tested was 5, 10 and 20% (by volume) of fatty acid methyl esters (FAME) in diesel fuel. Both NanoTag and VisioTag markers were found to be stable in PME and blended fuel after 9 months of storage. The concentration of the NanoTag marker (MTK‐021) remains consistent as determined by HPLC–UV detector. No colour change or discolouration was observed for the VisioTag marker. Other important fuel quality parameters such as acid value, oxidative stability, and moisture content of the samples were studied. The results showed that NanoTag markers pose no significant measurable effects on blended PME and diesel fuel quality upon storage up to B20.
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