caa a22 4500 445880244 CHVBK 20180317145540.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00604-011-0659-3 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0659-3 Fast and selective magnetic solid phase extraction of trace Cd, Mn and Pb in environmental and biological samples and their determination by ICP-MS [Elektronische Daten] [Nan Zhang, Hanyong Peng, Shen Wang, Bin Hu] We have immobilized iminodiacetic acid on mesoporous Fe3O4@SiO2 microspheres and used this material for efficient and cost effective method of magnetic solid phase extraction (SPE) of trace levels of Cd, Mn and Pb. The microspheres were characterized by infrared spectroscopy, scanning electron microscopy and transmission electron microscopy. The loaded microspheres can be easily separated from the aqueous sample solution by applying an external magnetic field. The effects of pH, sample volume, concentration and volume of eluent, and of interfering ions were investigated in detail. The method has detection limit of 0.16, 0.26 and 0.26ngL−1 for the ions of Cd, Mn and Pb, respectively, and the relative standard deviations (RSDs, c = 1μgL−1, n = 7) are 4.8%, 4.6% and 7.4%. The method was successfully applied to the determination of these metals in biological and environmental samples using ICP-MS. Two certified reference materials were analyzed, and the results coincided well with the certified values. Figure Mesoporous Fe3O4@SiO2@IDA magnetic particles for fast and selective magnetic solid phase extraction of trace Cd, Mn and Pb from environmental and biological samples followed by inductively coupled plasma mass spectrometry detection. Springer-Verlag, 2011 High-magnetization mesoporous microspheres nationallicence Fe3O4@SiO2@ iminodiacetic acid nationallicence Cadmium, manganese and lead nationallicence Solid phase extraction nationallicence Inductively coupled plasma mass spectrometry nationallicence Zhang Nan Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut Peng Hanyong Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut Wang Shen Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut Hu Bin Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut Microchimica Acta Springer Vienna 175/1-2(2011-10-01), 121-128 0026-3672 175:1-2<121 2011 175 604 https://doi.org/10.1007/s00604-011-0659-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0659-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Nan Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut NATIONALLICENCE 700 1- Peng Hanyong Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut NATIONALLICENCE 700 1- Wang Shen Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut NATIONALLICENCE 700 1- Hu Bin Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, 430072, Wuhan, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/1-2(2011-10-01), 121-128 0026-3672 175:1-2<121 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer