In view of the problems such as large reagent consumption and long detection period for permanganate detection,a rapid micro-reagent detection method for permanganate is proposed by using ultrasonic-assisted ablation technique and sequential injection analysis(SIA)according to the acoustic reaction mechanism of ultrasonic liquid.Based on the ultrasound-assisted permanganate solution ablation principle,the structure of the ablation cell is designed,and the permanganate regression mode is established by means of the least squares method.Results demonstrate that the curve correlation of ultrasound-assisted ablation method exhibits better than that of spectroscopic method.Based on the industry standard for permanganate index tester,the range drift and zero point drift are within the range from-5％to+5％,and the system repeatability error is within 2.51％.Experiments show that this method has certain application value.
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