As a result, certain semi-volatile compounds that would not be considered VOCs under Method 24 may be considered VOCs under Method 313, since Method 313 relies on methyl palmitate
as a VOC "marker.
Reference standard, supelco 10 and 30 (mix of 20% of methyl stearate, methyl palmitate
, metyl linoleate, methyl linoleic, methyl oleate, methyl capric, methyl caprilic, methyl myristate and Methyl Laurate) was purchased from Sigma Aldrich Sdn Bhd for GC analysis.
From the components of the transesterified plant oils methyl palmitate
is the most effective ester in achieving reduction of hydrocarbons and particulates in exhaust emissions.
Concentration dependence of methyl palmitate
isotope ratios by electron impact ionization gas chromatography/ mass spectrometry.
Some of the fats filtered out, such as methyl palmitate
and methyl stearate, tend to have the best combustion properties, however.
But the winner was an ester called methyl palmitate
, the team reports in the Aug.