摘要
采用硝酸、高氯酸消解大气颗粒物样品,以丁二酮肟显色,正丁醇萃取分离,分光光度法测定大气颗粒物中镍的含量。线性回归方程为A=0.2056c-8.027×10^(-3),相关系数r=0.9994,线性范围为0.01～2.44 mg/L,回收率为96％～105％,RSD为0.2％～1.5％,以3倍信噪比计算,镍的检出限为7.5×10^(-3)mg/L。
The determination of nickel in the atmosphere by diacetyldioxime spectrophotometry is introduced. The regression equation is A = 0. 2056c -8. 027 × 10-3, the correlative coefficient is r = 0. 9994,the linear range is 0.01 -2.44 mg/L, the recovery is 96% - 105% and RSD is 0. 2% - 1.5% . Calaulating at three times of the signal noise ratio, the detection limit of nickel is 7. 5 × 10-3 mg/L.
出处
《化学分析计量》
CAS
2002年第1期21-23,共3页
Chemical Analysis And Meterage
