ISO 7110:1985
Ammonium bicarbonate (Ammonium hydrogen- carbonate) for industrial use (including foodstuffs) — Determination of lead content — Flame atomic absorption method
Reference number
ISO 7110:1985
Edición 1
1985-07
Retirada
ISO 7110:1985
13695
Retirada (Edición 1, 1985)

Resumen

A test portion is dissolved in water and acidified with hydrochloric acid. The carbon dioxide is eliminated by heating the solution. The lead is complexed and extracted with a solution of diethylammonium diethyldithiocarbamate in xylene. The solution is aspirated into an acetylene-air flame. The absorption of the 217 nm line or, alternatively, of the 283.3 nm line emitted by a lead hollow-cathode lamp is measured. The method is applicable to products containing more than 0.1 mg/kg of lead.

Informaciones generales

  •  : Retirada
     : 1985-07
    : Retirada de la Norma Internacional [95.99]
  •  : 1
     : 3
  • ISO/TC 47
  • RSS actualizaciones

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