Detection laser atomic fluorescence spectrometr

Method Performance General Broekaert (1994) provides a good comparison of the figures of merit power of detection, matrix effects and cost, for many atomic spectrometric elemental determination methods including atomic absorption, atomic emission, laser atomic fluorescence. 

Direct bond fission in the SiH302 complex to give SiHsO + O is endothermic. The reported mass spectrometric detection of SiHaO has to be due to some fragmentation of intermediate species. The chain branching role of the SiH30 + O channel assumed to explain the SiH4/02 explosion limits also appears questionable. H atoms and OH radicals from pathways (a) and (b) have been detected by laser induced-fluorescence in the VUV. The reported relative ratio is OH/H = 0.38, but it is difficult to rule out contributions to the H and OH formation from secondary reactions. 

Atomic emission detector (AED), electrochemical detection (ELCD), electron capture detection (ECD), evaporative light scattering detector (ELSD, including condensation nuclea-tion-CN), fluorescence detector (FLD, including laser-induced fluorescence), inductively coupled plasma-mass spectormetry (ICP-MS), mass spectrometry (MSD), MS/MS, MS(n), thermoionic detector (NPD), spectrometric detection (UV, Vis, DAD) ... 

For detection of carbohydrates in principle, ultraviolet (UV), laser-induced fluorescence, refractive index, electrochemical, amperometric, and mass spectrometric detection can be used. Mass spectrometry (MS), with its various ionization methods, has traditionally been one of the key techniques for the structural determination of proteins and carbohydrates. Fast-atom bombardment (FAB) and electrospray ionization (ESI) are the two online ionization methods used for carbohydrate analysis. The ESI principle has truly revolutionized the modem MS of biological molecules, due to its high sensitivity and ability to record large molecule entities within a relatively small-mass scale. 

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