caa a22 4500 445880686 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0565-8 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0565-8 Separation and preconcentration of palladium using modified multi-walled carbon nanotubes without chelating agent [Elektronische Daten] [Chun-Gang Yuan, Yan Zhang, Shuping Wang, Ailing Chang] A solid phase extraction procedure is presented for the separation and preconcentraton of trace levels of Pd(II) ion by using oxidized multiwalled carbon nanotubes (MWCNTs). Experimental parameters (pH, type of eluent, sample volume and flow rate of sample solutions) were studied in detail. The Pd(II) adsorbed on the MWCNTs was eluted with 3.0M nitric acid and then determined by flame atomic absorption spectrometry. The effects of potentially interfering ions on the recovery of Pd(II) were also examined. Under optimized conditions, the method provides a preconcentration factor of 165, has a linear range from 1.0ngmL−1 to 200ngmL−1 of Pd(II), a detection limit of 0.3ngmL−1, and a relative standard deviation 5.3% at 50ngmL−1 of Pd(II). The method was validated by the extraction and determination of Pd(II) in water, fly ash, and road dust samples. Figure Palladium in aqueous solution was separated and preconentrated by oxidized modified multi-walled carbon nanotubes as solid sorbent without chelating agent. Under optimized conditions, a preconcentration factor of 165 was achieved. Springer-Verlag, 2011 Carbon nanotubes nationallicence Separation and preconcentration nationallicence Palladium nationallicence Yuan Chun-Gang School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut Zhang Yan School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut Wang Shuping School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut Chang Ailing School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 361-367 0026-3672 173:3-4<361 2011 173 604 https://doi.org/10.1007/s00604-011-0565-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0565-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yuan Chun-Gang School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Yan School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Wang Shuping School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut NATIONALLICENCE 700 1- Chang Ailing School of Environmental Science & Engineering, North China Electric Power University, 071003, Baoding, Hebei, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 361-367 0026-3672 173:3-4<361 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer