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(a) The gas binding capacity of the a-PS(1.0) sensor as a function of binding time under the flow of three different gases (HCL, HF, and HCHO) at 100 ppm for a 25 min adsorption/desorption process and (b) the selectivity coefficient (k*) (Qe,HCl/Qe,(HF or HCHO) of HCl with respect to other gases.
