Reference number
ISO 6678:1981
ISO 6678:1981
Phosphoric acid for industrial use — Determination of lead content — Atomic absorption spectrometric method
Edition 1
1981-10
Withdrawn
ISO 6678:1981
13106
Withdrawn (Edition 1, 1981)

Abstract

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.

General information

  •  : Withdrawn
     : 1981-10
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 2
  • ISO/TC 47
    71.060.30 
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