ICP-AES测定粉末冶金材料中钨、钼等八种元素

用硝酸、高氯酸和氢氟酸溶解样品，在0.025 mol·L-1 EDTA介质中，采用一种标准溶液，用ICP-AES光谱法测定样品溶液中Ni，Cu，V，Mn，W，Mo，Co，Cr的含量。研究了基体和共存元素对分析元素光谱的影响，选择合适的波长，测定了分析结果的精密度，方法的检出限和回收率，结果表明，分析方法有很低的检出限，样品分析结果的相对标准偏差小于1%，加入回收率在98.2%～101.6%，方法准确、可靠、简便、快速，满足生产要求。

Determination of W, Mo and Other 8 Elements in Powder Metallurgical Materials by ICP-AES

Samples were dissolved using nitric acid, perchloride acid and hydrofluoride acid in the medium of 0.025 mol x L(-1) EDTA with a kind of standard solutions, and the element contents of Ni, Cu, V, Mn, W, Mo, Co and Cr were determined by ICP-AES method. After investigating the spectral interfere from matrix element and coexistent elements, optimum spectral lines were selected for each analyzed element, and the analytical precision, detection limits and recoveries were measured. The results show that the detection limits of the method are very low, relative standard deviations (n=10) are less than 1%, and the recoveries range from 98.2% to 101.6%. The proposed method is accurate, reliable, simple, and rapid. The method satisfies.