基于声化学微试剂快速检测方法研究

Research on rapid detection method based on acoustic chemical micro-reagents

针对高锰酸盐检测存在试剂用量大,检测周期长等问题,基于超声液体声化反应机理,应用超声辅助消解技术和顺序注射分析技术(SIA),提出了一种高锰酸盐微试剂快速检测方法。基于超声辅助高锰酸盐溶液消解原理,设计消解池结构,采用最小二乘法建立高锰酸盐回归模型。结果表明,超声辅助消解法曲线相关性优于光谱法。基于高锰酸盐指数检测仪行业标准,量程漂移与零点漂移在±5%以下,系统重复性误差为2.51%以内。实验表明,该方法具有一定的应用价值。

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.