辐照猪肉的检测──Ⅲ．猪骨中ESR信号研究

DETECTION OF IRRADIATED PORK── Ⅲ.INVESTIGATING ESR SIGNAL IN PIG BONE

研究了γ辐照在猪骨中诱生的自由基的ＥＳＲ波谱，并与紫外光辐照和未辐照处理的样品的ＥＳＲ波谱作了比较。测得为辐照所特有的ＥＳＲ信号。在实验使用的剂量范围内（１．２３－６．２４ｋＧｙ），信号高度随吸收剂量增加呈线性地增加。样品分别在室温和－１８℃以及空气存在下贮存４５ｄ和２２ｄ均观察到信号高度增加。

The ESR spectra of radicals induced byγ-irradiation in pig bone have been studied and comparised with those of UV-irradiated and unirradiated samples. An ESR signal which is specific for irradiation has been found. The signal height increased linearly with the increase of dose within the range of 1 .23 to 6.24 kGy. When the samples were stored at room temperature and-18℃ as well as in the presence of air for 45 days and 22 days respectively, the growth of signal height has been also observed.