摘要
水样经硝酸-盐酸-氢氟酸混合酸微波消解后,利用电感耦合等离子体原子发射光谱法测定污水中总磷的含量。最佳试验条件如下:射频功率为1 450 W,观测高度为8mm,雾化气流量为0.85L·min^(-1),分析线为P 213.617nm。磷的线性范围为0.10~50.0mg·L^(-1),检出限(3s)为0.05mg·L^(-1)。加标回收率在92.7%~94.8%之间,测定值的相对标准偏差(n=6)在1.2%~2.6%之间。
ICP-AES was applied to the determination of total phosphorus in sewages after the sample was digested by microwave with a mixture of nitric acid, hydrochloric acid and hydrofluoric acid. The optimum experimental conditions were as follow： the RF power was 1 450 W, the observation height was 8 mm, the atomization gas flow rate was 0. 85 L·min^-1 , and the analytical line was P 213. 617 nm. The linearity range of phosphorus was 0. 10-50. 0 mg· L^-1 with detection limit （3s） of 0. 05 mg· L^-1. Recovery rates obtained by standard addition method were in the range of 92. 7%- 94. 8% and RSDs （n = 6） were in the range of 1.2% - 2.6%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2017年第3期295-298,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
河南省科技厅支持项目(172102410035)
黄河水利职业技术学院2016年科技项目(2016KXJS009)
