Fig. 6. (a) Response of SWCNT-N-C6F4CO2H at a single exposure of various ppm concentrations (expressed as natural logarithm) of NH3 and TMA in air. (Dotted line: linear fit y = a + b × x. TMA: a = −1.812 ± 0.281 and b = 1.641 ± 0.097; NH3: a = −1.014 ± 0.113 and b = 0.807 ± 0.039); (b) dependence of the p-SWCNTs and f-SWCNTs from several VOCs.
