Determination of lead by hydride generation atomic absorption spectrometry : Part 1. A new medium for generating hydride

A new medium, used to generate lead hydride, was optimized as 0.3% (w/v) oxalic acid-2% (w/v) ammonium cerium (III) nitrate-8% (w/v) potassium tetrahydroborate-1% (w/v) sodium hydroxide solution; 950°C is used for atomization. The characteristic concentration (0.0044 absorbance) obtained under these conditions was 0.04 ng ml^?1. The application of this medium to soil and ferromagano-brass samples is illustrated.