ISO 7110:1985
ISO 7110:1985


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.

General information 

  •  :  Withdrawn
     : 1985-07
  •  : 1
     : 3
  •  : ISO/TC 47 Chemistry
  •  :
    67.220.20 Food additives
    71.060.50 Salts

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