总镉在线监测仪和石墨炉原子吸收测镉比对试验

通过两种不同分析原理的监测分析方法测定地表水中总镉含量比对实验,实验表明利用HSJ-Cd型总镉在线监测仪测定地表水中镉含量具有在线监测快速准确、干扰少、分析成本低、信息反馈迅速等优点;在线自动监测系统监测结果的精密性、准确性较好,相对标准偏差(RSD)小于8.6%,相对误差小于5.7%,回归方程相关系数大于0.999,能够满足环境监测质量的要求,对及时迅速、科学准确掌握地表水环境质量状况,实现环境自动监控具有重要意义。

Comparative testing for cadmium between online monitoring and graphite atomic absorption

The total cadmium content compared to tests through in two kind of different analysis principle monitor analysis method determination surface water,the experiment indicated decides in the surface water using the HSJ-Cd total cadmium online monitor instrumental measurement the cadmium content to have the online monitor fast accurate,disturbs,the analysis cost few low,the information feedback rapid and so on the merits;The online automatic monitor system monitor result accuracy,the accuracy are good,relatively standard deviation(RSD) is smaller than 8.6%,the relative error is smaller than 5.7%,the regression equation correlation coefficient is bigger than 0.999,can satisfy the environmental monitoring quality the request,to prompt rapid,the science accurate grasping surface water environment quality condition,the realization environment automatic monitoring has the vital significance.