1.1 ,This test method covers the determination of selected elements in middle distillate fuels by inductively coupled plasma atomic emission spectrometry (ICP-AES). The specific elements are listed in Table 1. The concentration range of this test method is approximately 0.1 ,mg/kg to 2.0 mg/kg. The test method may be used for concentrations outside of this range, however, the precision statements may not be applicable. Middle distillate fuels covered in this test method have all distillation fractions contained within the boiling range of 150 ,°,C to 390 ,°,C. This includes, but is not limited to, diesel fuels and aviation turbine fuels.