caa a22 4500 445880163 CHVBK 20180317145540.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00604-011-0667-3 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0667-3 Preconcentration of trace aluminum (III) ion using a nanometer-sized TiO2-silica composite modified with 4-aminophenylarsonic acid, and its determination by ICP-OES [Elektronische Daten] [Hong Zheng, Xiuzhen Gao, Lin Song, Haiyan Guo, Shuling Yang, Xijun Chang] We describe a nanometer sized composite material made from titanium dioxide and silica that was chemically modified with 4-aminophenylarsonic acid and used for selective solid-phase extraction, separation and preconcentration of of aluminum(III) prior to its determination by ICP-OES. Under optimized conditions, the static adsorption capacity is 56.58mgg−1, the enrichment factor is 150, the relative standard deviation is 1.6% (for n = 11), and the detection limit (3s) is 60pgmL−1. The method was validated by analyzing the reference materials GBW 09101 (hair) and GBW 10024 (scallop) and successfully applied to the determination of trace Al(III) in spiked water samples and human urine, with recoveries ranging from 96% to 101%. Figure 4-aminophenylarsonic acid modified nanometer TiO2/SiO2 composite material has been developed to separate and concentrate trace Al(III) from aqueous samples. Parameters that affect the sorption and elution efficiency were studied in column mode, and the new adsorbent presents high selectivity and adsorption capacity for the solid phase extraction of trace Al(III). Springer-Verlag, 2011 4-aminophenylarsonic acid modified nano-TiO2/SiO2 composite material nationallicence Preconcentration nationallicence Aluminum (III) nationallicence ICP-OES nationallicence Zheng Hong College of Chemistry and Chemical Engineering, SouthWest University, 400715, Chongqing, Peoples Republic of China aut Gao Xiuzhen Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut Song Lin Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut Guo Haiyan Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut Yang Shuling Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut Chang Xijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, Peoples Republic of China aut Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 225-231 0026-3672 175:3-4<225 2011 175 604 https://doi.org/10.1007/s00604-011-0667-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0667-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zheng Hong College of Chemistry and Chemical Engineering, SouthWest University, 400715, Chongqing, Peoples Republic of China aut NATIONALLICENCE 700 1- Gao Xiuzhen Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut NATIONALLICENCE 700 1- Song Lin Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut NATIONALLICENCE 700 1- Guo Haiyan Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut NATIONALLICENCE 700 1- Yang Shuling Department of Chemistry, Qinghai Normal University, 810008, Xining, China aut NATIONALLICENCE 700 1- Chang Xijun Department of Chemistry, Lanzhou University, 730000, Lanzhou, Peoples Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 225-231 0026-3672 175:3-4<225 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer