SPSS正交设计优化铝合金中微量磷的测定条件  

Study on determination of micro-amounts of phosphorous in aluminium alloy by SPSS orthogonal design

作　　者：胡璇[1] 匡玉云 石磊[1] 

机构地区：[1]中国铝业股份有限公司郑州研究院,郑州450041

出　　处：《分析试验室》2014年第2期205-207,共3页Chinese Journal of Analysis Laboratory

摘　　要：以钼酸铵、乙酸丁酯和HNO3的用量以及萃取时间为考察因素，磷钼蓝络合物的吸光度为考察指标，通过SPSS软件设计了L9（3^4）的正交实验，并进行了方差分析和回归分析，得出较优的萃取条件：8．0mL钼酸铵溶液、10．0mL乙酸丁酯、8．0mLHNO3（1＋1）、萃取时间3min；当磷的含量在0～1．6μg／mL时，吸光度与浓度呈良好的线性关系；测定样品的标准偏差和加标回收率的结果满足要求。Selecting volumes of ammonium molybdate, butyl ethanoate, nitric acid and extraction time as factors, the absorbance of the phosphorous-molybdate complex as target, L9 （ 3^4 ） orthogonal test was designed with SPSS, at the same time, the data was dealt with ANOVA and regression analysis, the optimum conditions of extraction were： the volumes of ammonium molybdate, butyl ethanoate and nitric acid （ 1 ＋ 1 ） were 8.0, 10. 0 and 8.0 mL, respectively, the extraction time was three minutes. The linear range was 0 ~ 1.6 μg/mL. The results of relative standard deviations and recoveries were good.

关 键 词：铝合金 磷 乙酸丁酯 正交实验 

分 类 号：O657.3[理学—分析化学]