title: [Highly sensitive spectrophotometric determination of trace amounts tin in water by Sn(IV)-XO-PVA system].
abstract: A new spectrophotometric method for the determination of trace amount of tin (IV) has been developed based on the reaction of Sn (IV) with o-cresolphthalexon (XO), which forms a stable complex in the presence of polyvinyl alcohol (PVA). The complex exhibited a maximum absorbance at 544 nm. The molar absorption coefficient was 4.38 x 10(5) L.mol-1.cm-1. Recovery factor ranged from 97.4%-101.1%. Beers law was obeyed in the range of Sn 0.1-5 micrograms.(25 mL)-1. The complex was stable within 6 h. The suitable conditions for the reaction were investigated. The developed method has been applied to the determination of Sn (IV) in water samples. The result obtained is satisfactory.
authors.affiliation: College of Chemical and Environmental Science, Hebei University, Baoding 071002, China.
authors.forename: Han-wen
authors.initials: HW
authors.lastname: Sun
authors.forename: Shu-xuan
authors.initials: SX
authors.lastname: Liang
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
mesh_terms: D007220:Industrial Waste / Q000032:analysis*; D010635:Phenolphthaleins / Q000737:chemistry; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012643:Selenium / Q000737:chemistry; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013501:Surface-Active Agents; D014001:Tin / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007220:Industrial Waste; D010635:Phenolphthaleins; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D014001:Tin; D011142:Polyvinyl Alcohol; C017845:2-cresolphthalexon; D012643:Selenium