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The interference of lead on the determination of Sb and Cu by AAS was studied, and a new method for determination of Sb and Cu in Pb Ca alloy was established. 研究了鉛對原子吸收光譜法測定銻及銅的乾擾及其消除方法，提出了測定鉛鈣郃金中銻、銅的新方法。