ISO 6678:1981
$11.05
Phosphoric acid for industrial use — Determination of lead content — Atomic absorption spectrometric method
| Published By | Publication Date | Number of Pages |
| ISO | 1981-10 | 4 |
The lead is extracted from a diluted test portion into a solution of diethylammonium diethyldithiocarbamate in xylene. The xylene extract is separated and aspirated into the acetylene/air flame of an atomic absorption spectrometer. The spectrometric measurements are carried out at a wavelength of about 217 nm or, alternatively, about 283 nm. The method is applicable to phosphoric acids having lead contents greater than 0.1 mg/kg.
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