6533b836fe1ef96bd12a1401
RESEARCH PRODUCT
Determination of antimony in drinking waters by an inexpensive, reproducible hydride generator for atomic spectroscopy.
Reyes BarberáRosaura FarréI. Romerosubject
Antimonymedicine.diagnostic_testHydridePotassiumSpectrophotometry AtomicAnalytical chemistrychemistry.chemical_elementReproducibility of ResultsOxidation reductionAtomic spectroscopyHydrogen-Ion Concentrationlaw.inventionKineticschemistryAntimonylawPredictive Value of TestsWater SupplySpectrophotometryCalibrationCalibrationmedicineAtomic absorption spectroscopyOxidation-ReductionFood Sciencedescription
A method for determining antimony in drinking waters is described. In order to prevent a substantial error caused by the different oxidation states of antimony, Sb(V) is reduced to Sb(III) with potassium iodide-ascorbic acid. Covalent hydride is generated with a home made device by adding NaBH4. The hydride is then atomized in a flame-heated silica tube and atomic absorption is measured spectrophotometrically. The optimal conditions for this determination are discussed and interference effects are described. Results obtained by determining linearity range (0-200 ng), detection (LOD) and quantitation (LOQ) limits (LOD = 0.347 ng/ml, LOQ = 1.158 ng/ml), precision (instrumental CV 4.08% and method CV 7.74%) and accuracy performed by recovery assays (96.1%) show that the method is useful for antimony determination at the concentration usually present in drinking water.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1991-01-01 | Die Nahrung |