Analysis of Technetium Species and Fractions in Natural Seaweed Using Biochemical Separation and ICP-MS Measurement.
An extremely high accumulation and retention of technetium in marine plants, especially brown seaweed, makes it a unique bioindicator of technetium. In the present work, a novel approach was developed for the speciation analysis of technetium in seaweed, wherein a series of biochemical separations was exploited to isolate different species of technetium. Inductively coupled plasma mass spectrometry (ICP-MS) was applied for the measurement of99Tc after thorough radiochemical preconcentration and purification. The results show that the distribution of technetium species in seaweed is relatively dispersive. Besides the inorganic species of TcO4-, most of technetium (>75%) combined with organic components of seaweed such as algin, cellulose, and pigment. This investigation could provide important fundamental knowledge for studying the processes and mechanisms of99Tc accumulation in the natural seaweed.
Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University , 730000 Lanzhou, P. R. China.|Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus , DK-4000 Roskilde, Denmark.|Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University , 730000 Lanzhou, P. R. China.
Keliang
K
Shi
Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus , DK-4000 Roskilde, Denmark.|Xi'an AMS Center, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences , 710061 Xi'an, P. R. China.
Xiaolin
X
Hou
Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus , DK-4000 Roskilde, Denmark.
Jixin
J
Qiao
Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University , 730000 Lanzhou, P. R. China.
Xuejie
X
Sun
Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus , DK-4000 Roskilde, Denmark.
Per
P
Roos
Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University , 730000 Lanzhou, P. R. China.|Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University , 730000 Lanzhou, P. R. China.
Wangsuo
W
Wu
D013058:Mass Spectrometry; D011854:Radiochemistry; D012624:Seaweed / Q000737:chemistry*; D013667:Technetium / Q000032:analysis*
D013667:Technetium