The process of determination for lead in paint material of inside wall by graphite furnace atomic absorption spectroscopy using (NH_4)_2HPO_4 as matrix modifier is desc ribed.

• 本文描述了用(NH_4)_2HPO_4作基体改进剂、石墨炉原子吸收法直接测定内墙涂料中铅的方法。