title: Pre-concentration of cadmium, mercury and lead from natural water samples by silica gel functionalized purpald as a new chelating matrix for metal sorption.
authors.affiliation: Faculty of Medicine, Medical Chemistry Department, King Abdullaziz University, PO Box 80205, Jeddah 21589, Kingdom of Saudi Arabia. memahmoud10@yahoo.com
authors.forename: Mohamed E
authors.initials: ME
authors.lastname: Mahmoud
authors.forename: Mohammed S M
authors.initials: MS
authors.lastname: Al-Saadi
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000737:chemistry* / Q000302:isolation & purification*; D002614:Chelating Agents / Q000737:chemistry; D007854:Lead / Q000737:chemistry* / Q000302:isolation & purification*; D008628:Mercury / Q000737:chemistry* / Q000302:isolation & purification*; D058428:Silica Gel; D012822:Silicon Dioxide / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D002614:Chelating Agents; D013438:Sulfhydryl Compounds; D002104:Cadmium; C006537:4-amino-5-hydrazino-1,2,4-triazole-3-thiol; D007854:Lead; D058428:Silica Gel; D012822:Silicon Dioxide; D008628:Mercury