GC and GC/MS analysis
The liquid CO2 flower extract and liquid CO2 fractions of concrete
were analyzed by GC and GC/MS. GC analysis was carried
out on a Shimadzu GC-17A Gas Chromatograph equipped with an
FID and 25m×0.25mm×0.25 m WCOT column coated with 5%
diphenyl dimethyl siloxane supplied by J & W (DB-5).