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Chinese Journal of Applied Ecology ›› 2017, Vol. 28 ›› Issue (10): 3424-3432.doi: 10.13287/j.1001-9332.201710.031

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Advances in trace platinum group elements speciation and preconcentration of chelate resins in seawater.

LIU Kai1,2, GAO Xue-lu1*, LI Li3   

  1. 1. Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences,Yantai 264003, Shandong, China;
    2. Univesity of Chinese Academy of Sciences, Beijing 100049, China;
    3. First Institute of Oceanography, State Oceanic Administration, Qingdao 266601, Shandong, China
  • Received:2017-02-23 Revised:2017-07-01 Online:2017-10-18 Published:2017-10-18
  • Supported by:

    This work was supported by the National Nature Science Foundation of China (41376083).

Abstract: The content and occurrence of platinum group elements have a close relation with their biogeochemical behavior and ecological risk in seawater. However, the determination of the PGE content and morphology in seawater is difficult. The characterization of chelating resins for specific elements and specific ligand structures provides a potential for breakthrough in this problem. This review reported the major speciation of PGEs in seawater, discussed the adsorbing mechanism of resin, and compared the adsorption capacity of different types of chelate resin. Finally, some conclusions were drawn. First, the inorganic complexes of PGEs in seawater were mainly composed of [MCl3OH2-]/[MCl42-](M=Pt,Pd) and M(OH)33-n(n=3-6) (M=Rh); Second, chelate resins had certain recognition for different complex morphology of PGEs; Third, nitrogen-sulfur chelate resin was the ideal resin for studying PGEs in seawater under practical conditions.