Method for evaluating combustion uniformity of cigarette

The invention discloses a cigarette combustion uniformity evaluation method which comprises the following steps: pretreating a cigarette sample to obtain a to-be-detected sample; sucking the sample to be detected according to different combustion lengths, and collecting cigarette ash after combustion; detecting the content of potassium ions in the soot of all combustion lengths; and evaluating the combustion uniformity of the cigarette based on the content of all potassium ions. According to the method, the potassium element is uniformly distributed in the cigarette paper and the tobacco shreds, the potassium element cannot be transferred or volatilized in the whole combustion process, the content of the potassium ions in the cigarette ash after combustion in different combustion sections of the cigarette is collected, and the combustion uniformity is evaluated based on the obtained standard deviation; therefore, factors related to the tobacco shreds and the cigarette paper are all considered, and the evaluat