Abstract
A new type of crown ether cross-linked chitosan was synthesized by the reaction of chitosan with 4,4′-dibromodibenzo-18-crown-6 (Br-DBC). Its token structure was analyzed with FT-IR and NMR and the adsorption behaviors for lead and cadmium in environmental water samples by FAAS were studied. In addition the best analysis conditions were discussed and the adsorption mechanism was explained. As the enrichment factor is above 100, both recoveries are 94%–106%, the detection limits of lead and cadmium are 0.5μg·L−1 and 0.04 μg·L−1 and the relatively standard deviations of lead and cadmium are 3.1% and 2.8% respectively, this new method was successfully applied to the determination of environmental water samples. This method is fast and simple and it greatly enhances the determination ability of FAAS for lead and cadmium.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Qu Rong-jun, Wang Chun-hua. Studies on Natural Macromolecular Adsorbents (X) Synthesis and Adsorption Property of Crosslinking Chitosan Resin.Technology of Water Treatment, 1997,23 (4): 230–235 (Ch).
Qian Sha-hua, Huang Gan-quan, Jiang Jian-sheng,et al. Studies of Adsorption Behavior of Crosslinked Chitosan for Cr (VI), Se (VI).Journal of Applied Polymer Science, 2000,77: 3216–3219.
Peng Chang-hong, Wang Yu-ting, Tang Yu-rong. Synthesis of Crosslinked Chitosan Crown Ethers and Evaluation of these Products as Adsorbents for Metal Ions.Journal of Applied Polymer Science, 1998,70: 501–506.
Gui Yi-zhi. Progress on Polymeric Crown Compounds.Organic Chemistry, 1986,2: 89–98 (Ch).
Zhai Gui-xian. Determination of Cu, Pb and Cd in River Water by Concentration with Sulfbydryl Cotton Fiber.Spectroscopy and Spectral Analysis, 1992,12 (1): 119–122 (Ch).
Shen Zhen-tian, Chen Yi, Nie Feng. Simultaneous Determination of Manganese, Chromium, Copper, Zinc, Cadmium, Iron, Cobalt, Nickel and Lead in Lithium Salts and some Salts with Extraction-Flame Atomic Adsorption Spectrometry.Analytical Chemistry, 1990,18 (1): 61–64 (Ch).
Shcore E, Jagur-Grodzinski J. Protonation of Macrocylic Polyethers, Complexes with Hydrogen Bromide and Hydrogen Tribromide in Chloroform.Journal of the American Chemistry Society, 1972,94 (23): 7957–7962.
Wang Yu-ting, Peng Chang-hong, Tang Yu-rong,et al. Synthesis of Crosslinked Chitosan-crown Ethers and its Adsorption Properties for Metal Ions.Environmental Chemistry, 1998,17 (4): 349–354 (Ch).
Author information
Authors and Affiliations
Additional information
Foundation item: Supported by the State Education Committee Doctoral Foundation (No. 2000048615)
Biography: Tang Yu-rong(1943-), female, Associate professor, research direction: trace elements analysis.
Rights and permissions
About this article
Cite this article
Yu-rong, T., Shu-qin, Z., Yu-ting, W. et al. Applications of crown ether cross-linked chitosan for the analysis of lead and cadmium in environmental water samples. Wuhan Univ. J. Nat. Sci. 7, 217–221 (2002). https://doi.org/10.1007/BF02830322
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02830322