论文部分内容阅读
引言硝酸盐类是各类含氮化合物中最稳定的氮化合物,也是含氮有机物最终的分解产物。硝酸盐遇还原物质可生成致癌物质亚硝酸盐,饮水中硝酸盐含量过高,会导致血液中变性血红蛋白增加~([1])。因此,水体中硝酸根的测定是环境监测的一个重要项目。在线硝酸根分析仪广泛应用于环境监测领域,目前硝酸根的测定方法很多,主要有电极法和光度法~([2])。电极法是通过测量电极电位获得水样中硝酸根含量,光度法的主要原理为水样中的硝酸根与指
Introduction Nitrates are the most stable nitrogen compounds of various nitrogen-containing compounds and are the final breakdown products of nitrogen-containing organic compounds. Nitrates encounter reducing substances can generate carcinogens nitrite, nitrate in drinking water is too high, can lead to an increase in blood denatured hemoglobin ~ ([1]). Therefore, the determination of nitrate in water is an important project of environmental monitoring. Online nitrate analyzer is widely used in the field of environmental monitoring, the current determination of nitrate many ways, mainly electrode method and spectrophotometry ~ ([2]). Electrode method is obtained by measuring the electrode potential of nitrate in water samples, the main principle of photometry is the nitrate and water samples