一种检测水体总氮的多技术协同氧化消解装置

A multi-technology collaborative oxidation device for determination of total nitrogen in water

在分析比较前人方法的基础上,研究开发了一套集臭氧、紫外、超声雾化、高压静放电等多技术协同的氧化消解装置,对含氮水样进行连续消解,将水中含氮物质中的N氧化为NO3-,从而测定水中的总氮。通过实验可以确定最佳消解条件,计算出总氮氧化的转化率,并进行精密度、准确度检验。本法具有无需添加化学氧化剂,总氮氧化率高和消解速度快,精密度、准确度高等特点。

Based on analysis and compare of nitrogen digestion methods up to date, a multi-technology col- laborative oxidation device was developed, which involved ozone, UV, ultrasonic atomization and high-voltage static discharge. In order to determinate total nitrogen, the present device could continuously oxidize N from ni- trogenous substances into NO3- in water samples. The optimum digestion conditions were worked out, and the conversion rates for nitrogen oxidation were obtained. Precision and accuracy inspection for total nitrogen analysis results were carried out. It could be concluded that the present method, in which no chemical oxidants were added, had the characteristics of high total nitrogen oxidative rate, fast digestive speed, high precision and accuracy.