DIN 51769-9:1981
石油产品的检验.铅质量比重级别为50至1000myg/kg的液体矿物油碳氢化合物中铅含量(总铅量)测定.一氯化碘分解.双硫腙萃取和测光双硫腙铅络合物的光度法测定双硫腙铅络合物
Testing of petroleum products; determination of the lead content (total lead) of liquid mineral oil hydrocarbons with a mass fraction of lead of 50 to 1000 g/kg; iodine monochlorid disentegratien; extraction with dithizone and photometric determinatio