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In this work, we have avoided discussing the desolvation of highly concentrated solutions, because these are seldom employed in conventional flame spectrometry. However, even for droplets containing low solute levels, desolvation will eventually produce a highly concentrated, albeit smaller, droplet in the flame. Although it is certainly to be expected that removal of the last amounts of solvent from this droplet and from the resulting particle will proceed by an altered mechanism (59), our observations and existing theories (40) argue that the removal is nonetheless very rapid, so that the altered mechanism will have little practical significance to flame spectrometry.These studies may also be of some importance in the investigation of the burning mechanisms for various liquids. Correlating values of 7 which best fit experimental data may lead to a better understanding of the combustion processes that occur upon injection of a combustible droplet into a flame such as the premixed, air-acetylene flame used in these experiments. An example of this kind of study is the unexpected phenomena encountered in the determination of the desolvation rate of methanol. The combustion of methanol, (38) A

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