Determination and Distribution Patterns Analysis of Rare Earth Elements in Sediments of Prydz Bay
WANG Zhi-guang1, 2, CHEN Fa-rong1, 3*, ZHENG Li1, BAO Hui-xin1, LI Jing-xi1, YU Xi-juan2, WANG Xiao-ru1
1. First Institute Oceanography of State Oceanic Administration, Qingdao 266061，China 2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China 3. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
Abstract：A sensitive quantificational method was developed for the analysis of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, etc. in sediments of Prydz Bay by inductively coupled plasma mass spectrometry, and then the REE distribution patterns were analyzed. The samples were digested by microwave using HNO3-H2O2-HF as oxidant. The results showed that the total contents of rare earth elements in eight sites ranged from 117.35 to 348.63 μg·g-1 and the maximum value was 2.97 times of the minimum value. The REE distribution patterns of different sites in sediments were basically identical and there was an obvious fractionation between LREEs and HREEs. The linear correlation of the method was preferable (r=0.999 7～1.000 0). The RSDs (n=3) were no more than 5.0%, and the relative errors were no more than 10%. The detection limits of rare earth elements reached ng·L-1 level except for Sc. This method was suitable for the analysis of REEs in sediments with the advantages of rapidness, simplicity, high precision and accuracy.
Key words：Prydz Bay;Inductively coupled plasma mass spectrometry;Sediment;Rare earth element
王志广1, 2，陈发荣1, 3*，郑 立1，包惠薪1，李景喜1，于锡娟2，王小如1 . 普里兹湾沉积物中稀土元素的测定及其配分模式分析[J]. 光谱学与光谱分析, 2012, 32(07): 1950-1954.
WANG Zhi-guang1, 2, CHEN Fa-rong1, 3*, ZHENG Li1, BAO Hui-xin1, LI Jing-xi1, YU Xi-juan2, WANG Xiao-ru1 . Determination and Distribution Patterns Analysis of Rare Earth Elements in Sediments of Prydz Bay. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(07): 1950-1954.
