Antimony Determination by Hydride Generation — UV-visible Molecular Absorption Spectrophotometry with Diode-Array Detection

A method for antimony determination is described comprising hydride generation and transport into a flow-cell placed in a UV-visible molecular absorption spectrophotometer with diode-array detection. Nitrogen is employed as carrier gas. The measurement is performed at 198 nm. The calibration curve is linear from 3 to 440 μg/ml of antimony. The method was successfully applied to the analysis of PVC.