This article introduced the increment of measurement channels for the elements silicon,phosphorus,niobium and titanium by changing the entrance slit angle,based on the fixed channels of the ICP AES.

• 本文在ICP-AES所装置的固定通道的基础上，运用改变入射狭缝角度的办法，扩展了硅、磷、铌和钛元素的测量通道，入射狭缝角度的改变由步进马达控制。