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Studies of some ultratrace elements in antarctic water via crown ether crosslinked chitosan
Author(s) -
Zhang ShuQin,
Wang YuTing,
Tang YuRong
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12582
Subject(s) - chitosan , adsorption , crown ether , elution , crown (dentistry) , chemistry , atomic absorption spectroscopy , absorption (acoustics) , polymer chemistry , ether , graphite , chemical engineering , materials science , chromatography , organic chemistry , composite material , ion , physics , quantum mechanics , engineering
A new type of crown ether crosslinked chitosan was prepared by the reaction of chitosan with synthesized 4,4′‐dibromodibenzo‐18‐crown‐6. Its adsorption behaviors for some ultratrace elements at different sites in Antarctica were studied. The results indicated that the adsorption rates were greater than 95% at pH 7.5, the enrichment factor of the ultraelements was greater than 50, and the detection limits of graphite furnace atomic absorption spectroscopy were improved greatly. The proper analysis conditions were examined, and a new method of detecting ultratrace elements in environmental water samples with dibromodibenzo‐18‐crown‐6 crosslinked chitosan was developed. In addition, the elements could easily be eluted off after absorption by dibenzo‐18‐crown‐6 crosslinked chitosan, and so it is possible for this method to be used as a routine and valuable analysis method in environmental inspections. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 806–809, 2003