caa a22 4500 445880988 CHVBK 20180317145543.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0532-9 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0532-9 Speciation of inorganic arsenic in environmental waters using magnetic solid phase extraction and preconcentration followed by ICP-MS [Elektronische Daten] [Chaozhang Huang, Wei Xie, Xiong Li, Jianping Zhang] A new method was developed for the speciation of inorganic arsenic in environmental water by using selective magnetic solid-phase extraction followed by inductively coupled plasma mass spectrometry. It is found that As(V) selectively adsorbed on amino-modified silica-coated magnetic nanoparticles (MNPs) in the pH range from 3 to 8, while As(III) is not be retained. The As(V)-loaded MNPs can be separated easily from the aqueous sample solution by simply applying an external magnetic field. The adsorbed As(V) was quantitatively recovered from the MNPs using using 1M nitric acid. Total inorganic As was extracted after the permanganate oxidation of As(III) to As(V). Parameters affecting the separation were investigated systematically, and the optimal separation conditions were established. Under the optimal conditions, the limit of detection is 0.21ngL−1, and the precision is 6.8% (at 10ngL−1, for n = 7). The method was applied to the speciation of inorganic arsenic in environmental water of tobacco growing area. Figure A new kind of silica-coated magnetic nanoparticles (SCMNPs) modified with AAPTS was synthesized and employed as magnetic solid phase extraction adsorbent for ICP-MS speciation of inorganicAs in environmental water Springer-Verlag, 2011 Speciation of arsenic nationallicence Magnetic SPE nationallicence 3-(2-aminoethylamino) propyltrimethoxysilane nationallicence ICP-MS nationallicence Huang Chaozhang Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut Xie Wei Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut Li Xiong Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, People's Republic of China aut Zhang Jianping Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 165-172 0026-3672 173:1-2<165 2011 173 604 https://doi.org/10.1007/s00604-010-0532-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0532-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Chaozhang Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut NATIONALLICENCE 700 1- Xie Wei Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut NATIONALLICENCE 700 1- Li Xiong Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Jianping Technical center of Fujian Tobacco Industrial Corporation, 361022, Xiamen, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 165-172 0026-3672 173:1-2<165 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer