Ссылочный номер
ISO 7110:1985
ISO 7110:1985
Ammonium bicarbonate (Ammonium hydrogen- carbonate) for industrial use (including foodstuffs) — Determination of lead content — Flame atomic absorption method
Версия 1
1985-07
В время отменен
ISO 7110:1985
13695
Отозвано (Версия 1, 1985)

Тезис

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.

Общая информация

  •  : Отозвано
     : 1985-07
    : Отмена международного стандарта [95.99]
  •  : 1
  • ISO/TC 47
  • RSS обновления

Жизненный цикл

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