Full set of Notes with Fill-Ins - San Jose State University

Chem 155 Unit 9 Atomic Emission Page 165 of 316Inert-Gas Plasma Properties (ICP,DCP)Ar mostly, also Ne and He (MIP)• Chemically InertPredominant Species are Ar, Ar + , and electrons• Very Hot5,000 to 10,000 K vs. 2,000 to 3,000 K for flames• Superior AtomizersB 2 O 3 , PO 4 , WO x , VO x , ZrO x and otherREFRACTORY compounds can be analyzedRefractory compounds are extremely thermallystable, and therefore hard to atomize.• Nonmetals Can Be AnalyzedCl, Br, I, S for example: Try making a hollowcathode lamp out of a non-metal!Plasma EmissionSimultaneous DetectionFlame Atomic AbsorptionOne or Two at a TimeOptimization SimplerExcellent Dynamic RangeWide Range of ElementsCostly to Use / BuyEasier to UseHigher PrecisionMetals OnlySignificantly CheaperPage 165 of 316