Smartchem140全自动化学分析仪测定地表水中的氨氮

摘要

The ammonia in surface water was determined using Smartchem 140 automatic chemical analyzer. Un der optimized experimental conditions, the ammonia concentration had good linear relationship with absorption in the range of 0. 01～2.0mg/L. The regression equation was △A630 =0. 45C+0. 0014 ( r =0. 9999). The detection limit was 0.005mg/L and the recovery was 98.7％～100.2％.%用Smartchem140全自动化学分析仪测定了地表水中的氨氮.在最佳实验条件下,氨氮浓度在0.01～2.0 mg/L范围内与吸光度线性关系良好,线性回归方程为△A630＝0.45C+0.0014,相关系数为0.9999,检出限为0.005 mg/L,加标回收率为98.7%～100.2%,方法简便实用,用于环境样品分析,所得结果令人满意.