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研究应用基体改进剂、石墨管镧涂层和L’vov平台对岩石中铅测定时基体干扰消除的效果。结果表明,用NH_1H_2PO_4和Mg(NO_3)_2作为基体改进剂,联合运用L’vov平台,对消除岩石中的基体干扰效果最好,可达到溶样后直接测定的要求。
The effects of matrix modification, graphite tube lanthanum coating and L’vov platform on matrix interference elimination in determination of lead in rock were studied. The results show that the combination of NH_1H_2PO_4 and Mg_ (NO_3) _2 as the matrix modifier and the combined use of L’vov platform have the best effect on eliminating the matrix interference in rock and can meet the requirement of direct determination after sample dissolution.