Investigation and statistic analysis on quality of Chinese gum rosin from 1995 through 2002.

摘要

The quality of Chinese gum rosin from different pine species such as Pinus elliottii,P.merkusii and P.caribaea was investigated during 1995-2002.Data were statistically analysed and compared with the main technical specifications required in GB/T 8145-1987.Statistical average results showed that the present state of quality of Chinese gum rosin was superior to the specification required in GB/T 8145-1987 and was still ranking international top level,if only experimental values were considered.