AA3型连续流动分析仪测定天然泉水中的亚硝酸盐氮

Determination of Nitrite Nitrogen in Natural Spring Water by Type AA3 Continuous flow Injection Analyser

建立应用AA3连续流动分析仪测定天然泉水中亚硝酸盐氮的方法。在0-5.00mg·L^-1线性区间内该方法线性关系好，较高的精密度和准确度，检出限低。与GB／T8538-2008饮用天然矿泉水检验方法中亚硝酸盐氮分光光度法相比，该方法具有自动进样、分析速率快、试剂耗量低等优点，可应用于大批量天然泉水分析.

The method was developed for determination of nitrite nitrogen in water by type auto analyzer 3 cotinuous flow injection. The method was linear to the nitrite nitrogen graphs higher precision and accuracy with in 0-5.00 mg/L concentration. Compared with determination of nitrite nitrogen by Spectrophotometry in GB/T 8538-2008 test methods of natural mineral water for drinking, the advantages of the method are auto-sampling, rapid analysis speed and lower reagent consumption, etc. It could be applied to analyze large quantity of natural spring water.