Experimental The premixed butane/air flame was generated using a commercially butane micro touch. The diffusion flame was generated by introducing an excessive amount air into the touch. Figure 1 shows that JMS-MT3010HRGA connected on a simple sampling tube and combustion products generated in the flame were measured with the Table 1 conditions. The sampling positions of the premixed flames were 5 positions A to E, and the center of each position of the flame was measured (see Fig.2). The diffusion flame was measured in the center of flame position F (see Fig.3).