title: [Spectrophotometric determination of trace amount of cadmium in marine products].
abstract: The colour reaction of Cd(II) on xylend orange in the presence of hexamethylenetetramine-KNO3-HNO3 has been studied. Cd(II) forms the complex at pH = 6.2-6.4 (lambda(max) = 578.4 nm) with an apparent molar absorptivity of 1.6 x 10(4) L x mol(-1) x cm(-1). Beer's law is obeyed for Cd(II) in the range of 0.5-6 microg x mL(-1). The detection limit is 0.007 microg x mL(-1) with the recovery of 90%-105%. The method is simple and highly sensitive, and has been applied to the analysis of sample with satisfactory results.
authors.affiliation: Department of Chemistry, Changchun Normal College, 130032 Changchun.
authors.forename: G
authors.initials: G
authors.lastname: Jiang
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Tang
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000737:chemistry*; D003386:Brachyura / Q000737:chemistry*; D002104:Cadmium / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D012624:Seaweed / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods*
chemical_list: D002104:Cadmium