Determination of Sub-microgram Amounts of Bismuth in Water by Atomic Absorption Spectrophotometry Following Flotation Separation
作者： Susumu Nakashima
DOI: 10.1007/BF00474298
关键词: Atomic absorption spectroscopy 、 Sodium borohydride 、 Hydrochloric acid 、 Iodine 、 Inorganic chemistry 、 Chemistry 、 Bismuth 、 Sodium 、 Absorption (chemistry) 、 Hydroxide
摘要: A method is described for the flotation and determination of sub-microgram levels bismuth in water. Bismuth(III) a 1000ml sample water coprecipitated with iron(III) hydroxide at pH 4.0±0.2. The precipitate floated aid mixed surfactant (sodium dodecyl sulphate sodium oleate) small air bubbles, then separated dissolved dilute hydrochloric acid. Prior to determination, potassium iodide added. Finally, content determined by generation hydride using borohydride as reductant subsequent atomic absorption spectrophotometry 60 cm tube. Bismuth 0.3 μg 0.6 added natural could be recovery above 97 % relative standard deviation within 3%.
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