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Then
analysis was done by injecting a 1 ll aliquot in a splitless
mode into a Hewlett Packard 6890 gas chromatograph
(Avondale, PA, USA) equipped with a flame-ionization
detector and a DB-5 fused-silica capillary column
(30 m 0:32 mm i.d.; film thickness 1 lm; J&W Scientific,
Folsom, CA, USA). Injector and detector temperatures
were set at 300 C. Oven initiating temperature
was at 190 C, elevated to 215 C at 6 C/min, and
then increased up to 300 C at 32 C/min, held for 3
min. Nitrogen was used as a carrier gas. The percentage
yield (percent weight conversion) was defined as ðmg
biodiesel mg initial soybean oilÞ 100% and was estimated
using peak area integrated by on-line software
Hewlett-Packard 3365 Series II ChemStation (Avondale,
PA, USA).
摘自------
期刊：Bioresource Technology 88 (2003) 103–106
文章题目：Optimization of lipase-catalyzed biodiesel by response
surface methodology
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