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 µg/kg; iodine monochlorid disentegratien; extraction with dithizone and photometric determination of the lead dithizone complex
石油产品的测试；测定铅质量分数为50至1000µg/kg的液态矿物油碳氢化合物中的铅含量（总铅）；一氯化碘分解物；双硫腙萃取光度法测定铅-双硫腙络合物