Solid-Phase Extractors Based on 8-Aminoquinoline and 2-Aminopyridine Covalently Bonded to Silica Gel for the Selective Separation and Determination of Calcium in Natural Water and Pharmaceutical Samples

Ezzat M. SOLIMAN, Salwa A. AHMED
2010 Analytical Sciences  
doi:10.2116/analsci.26.473 pmid:20410571 fatcat:fn6ehuggwvaihfq2oug6wcqdg4