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1. 引言在过去的十年中,感耦等离子体(ICP)作为液体样品发射光谱分析(AES)的有力工具日趋成熟与普及。ICP-AES能够分析多种样品中的大量、少量和痕量组分,但是,对发射多谱线光谱的组分的样品的痕量分析仍是一个问题。大多数过渡元素、希土元素、铂系金属、铀和钍属于此范畴。这些元素的存在使痕量组分的检出限与纯水溶液的相比要大大变差,并危及分析的准确度。原因是背景增强和分析线被共存物
1. Introduction Over the past decade, inductively coupled plasma (ICP) has become a powerful tool for the emission analysis of liquid samples (AES). ICP-AES enables the analysis of large, small and trace amounts of many samples, but the trace analysis of samples emitting components of the multispectral spectrum remains a problem. Most transitional elements, rare earth elements, platinum metals, uranium and thorium belong to this category. The existence of these elements makes the detection limit of trace components significantly worse than pure water solution, and endanger the accuracy of the analysis. The reason is that background enhancement and analysis lines are coexisting