Cu（II）、Pb（II）、Mg（II）离子对γ射线辐照钝顶螺旋藻的影响
Effect of Cu(II), Pb(II), Mg(II) ions on gamma-irradiated Spirulina platensis
摘要：
采用紫外可见分光光度法研究了金属离子Cu（II）、Pb（II）、Mg（II）对钝顶螺旋藻（Spirulina platensis）细胞经3次Cs 137 γ射线离散剂量（每次20 kGy）辐照后再培养的影响。结果表明，金属离子Mg（II），Pb（II），Cu（II）在相互作用效率方面彼此不同。特别地，Mg（II）离子充当刺激物，以在使用离散剂量的辐射和培养若干次之后增加钝顶螺旋藻组分的含量。对于Pb（II）离子，在低浓度下吸收强度的变化缓慢减小，然后随着Pb（II）浓度的增加，对于C-藻蓝蛋白，Ch 1a的吸收强度增加，这意味着钝顶螺旋藻组分的数量含量增加。未观察到Cu（II）的这种效应。
英文摘要：
Influence of metal ions Cu(II), Pb(II), Mg(II) on Spirulina platensis cells were studied after three times Cs137 gamma irradiation discrete dose (in each case 20 kGy irradiation dose) and recultivation using UV-VIS spectrometry. It was shown, that metal ions Mg(II), Pb(II), Cu(II) differ from each other in terms of interaction efficiency. In particular, Mg(II) ions act as a stimulant to increase content for Spirulina platensis components after several times with discrete doses of radiation and cultivation . For Pb (II) ions, the change in absorption intensity at low concentrations slowly decreases, and then with an increase in the Pb (II) concentration, the absorption intensity increases for C-phycocyanin, Ch1a, which implies an increase in the quantity content of Spirulina platensis constituents. Such effect for Cu(II) not observed.
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