Chemical Speciation with Hyphenated Instruments

Plasma emission spectroscopy is an elemental analysis technique that is, it provides no information on the chemical form or oxidation state of the element being determined. The identification of the chemical state of an elanent in a sample is called speciation. Eor example, in environmental samples, mercury may exist in a variety of species mercuric ion, mercurous ion, methyhnercury compounds, and the extremely toxic compound dimethylmercury. Determination of mercury by ICP-OES results in 

The use of a helium MIP as a detector for compounds separated by GC has been mentioned and will be discussed in Chapter 12, but has been used for the determination of thiophene in benzene at ppb levels F, C, N, and S in gasoline organolead and organomanganese compounds in gasoline and elements in sediment and coal. The website at www.jas.de provides a number of application notes. 

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All major modern atomic absorption and emission techniques and instrumentation are covered. Appendices with FAAS and GFAAS conditions have been added, and a new appendix with up-to-date hmits of detection for all the atomic spectroscopic techniques is included. Chemical speciation using hyphenated chromatographic-atomic emission spectroscopy is described as is a novel microwave induced plasma emission instrument for particle characterization. 

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