ICP-OES, ICP-MS and AAS Techniques Compa

这个介绍的很详细 Inductively coupled plasma-optical emission spectrometry (ICP-OES) is an attractive technique that has led many analysts to ask whether it is wiser to buy an ICP-OES or to stay with their trusted atomic absorption technique (AAS) (1). More recently, a new and more expensive technique, inductively coupled plasma-mass spectrometry (ICP-MS), has been introduced as a routine tool (2). ICP-MS offers initially, albeit at higher cost, the advantages of ICP-OES and the detection limit advantages of graphite furnace-atomic absorption spectrometry (GF-AAS). Unlike the famous prediction by Fassel, "…that AAS would be dead by year 2000….", low cost flame AAS will always have a future for the small lab with simple needs. This article will briefly describe these three techniques, and point out the important criteria by which to judge their applicability to your own analytical problems. Table 1 below shows a checklist of common analytical requirements and may help in the assessment of the techniques.