This standard specifies methods for the determination of lead content in titanium dioxide using graphite furnace atomic absorption spectrometry and atomic fluorescence spectrometry for mercury and soluble arsenic content. This standard is applicable to the determination of lead, mercury and soluble arsenic content in titanium dioxide. The determination ranges of lead, mercury and soluble arsenic are 0.2 mg/kg~100.0 mg/kg, 0.01 mg/kg~10.00 mg/kg, and 0.1 respectively. mg/kg~80.0 mg/kg.