Accumulation of radium in relation to some chemical analogues in Dicranopteris linearis

作者：Chao J H^*; Chuang C Y

来源：Applied Radiation and Isotopes, 2011, 69(1): 261-267.

DOI：10.1016/j.apradiso.2010.08.012

• Radium
• Alkaline earth metals
• Rare earth elements
• Concentration ratio
• Radioactivity measurement

This study elucidates the uptake and accumulation of radium in the field-growing fern Dicranoptens linearis by relating the radium concentration to some potential chemical analogues including alkaline earth metals rare earth elements and some important heavy metals Time-dependent accumulation of radium and these chemical analogues for D linear's were described by the (228)Th/(228)Ra activity ratio an index for inferring plant age The correlation between radium and these elements was assessed by statistical analysis and used as a reference to elucidate the uptake and accumulation of radium in relation to the chemical analogues Analytical and statistical results showed that the concentrations of alkaline earth metals (except for Mg) rare earth elements and some heavy metals in D linearis increased linearly with plant age These elements exhibiting a similar accumulation pattern to radium and significant correlation coefficients with radium were considered as the chemical analogues to radium Additionally the pl

• 出版日期2011-1
• 单位清华大学