正交试验确定原子吸收分光光度法测定锰的操作条件

The Selection of Operating Conditions of Determination the Manganese Ion by Flame Atomic Absorption with Orthogonal Test Design

利用正交试验设计测试WFX-120原子吸收分光光度计测定锰的操作参数。正交试验设计是研究和处理多因素试验的一种科学方法。采用L9(34)正交表得出最佳工作条件为灯电流1.9 mA、乙炔流量/空气流量1.8/6.0 L/min、狭缝宽度0.2 mm、燃烧器高度6 mm。

Orthogonal test is one of the scientific methods in studying and treating muhifaetor tests. Optimum operation conditions of determination the manganese ion by flame atomic absorption were researched by means of orthogonal test with four factors and four levels. In the orthogonal layout of L9 （3^4 ）, the results show that optimum operation conditions of determination the manganese ion by flame atomic absorption on WFX - 120 atomic absorption spectrometer are that lamp current is 1.9 mA, width of slit is 0.2 mm, height of the burnet 5 nun and the ratio of flowing of acetylene to flow of air 1.8/6.0 L/min.