ZHANG Wenhui LIN Jian XIE Zhi XU Xuee. Study on change of free radicals of bamboo with 60Co γ radiation[J]. Nuclear techniques, 2011, 34(12): 929-931.DOI:
Bamboo samples collected in mountain areas of Fujian province were mechanically pulverized into saw dust.This breaks the covalent bonds of bamboo molecules and free radicals are formed.ESR characterization of the bamboo saw dust samples of 20
200 and 500 mesh showed that the relative intensity of the 500 mesh saw dust was the highest
and that of the 20 mesh was the lowest(g=2.0033).After
60
Coγ-ray irradiation
the intensity of free radicals increased sharply.At
>
100 kGy
the free radicals tended to be saturated at about 40 times of the free radicals produced mechanically.The intensity of free radicals increased exponentially with the dose below 100 kGy
and decay coefficients of the free radicals in the three samples were different.