[Highly sensitive spectrophotometric determination of trace amounts tin in water by Sn(IV)-XO-PVA system].
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.
Sun
Han-wen
HW
College of Chemical and Environmental Science, Hebei University, Baoding 071002, China.
Liang
Shu-xuan
SX
Li
Li
L
Zhang
Wei
W
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*
D007220:Industrial Waste; D010635:Phenolphthaleins; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D014001:Tin; D011142:Polyvinyl Alcohol; C017845:2-cresolphthalexon; D012643:Selenium