Separation/preconcentration of trace amounts of Cr, Cu and Pb in environmental samples by magnetic solid-phase extraction with Bismuthiol-II-immobilized magnetic nanoparticles and their determination by ICP-OES

Jibrin Sabo Suleiman, Bin Hu, Hanyong Peng and Chaozhang Huang

Talanta 77 ( 5 ): 1579 - 1583 , 2009