Analytical Uses of Ultrasound Prior to Sample Preparation

ANALYTICAL USES OF ULTRASOUND PRIOR TO SAMPLE PREPARATION 

The steps discussed in this section are invariably close to sample preparation. While cleaning is clearly outside the scope of sample preparation, degassing may or may not be used as a preliminary operation in analytical chemistry however, it is most frequently employed prior to the analytical process. Its use within the process is discussed in Chapter 5. A physical process such as atomization when understood as the formation of finely divided droplets is rarely used in analytical chemistry, even though it could be employed for sample conservation instead of lyophilization. The potential ways in which US can be used to improve it are discussed in Section 2.6.3, which is devoted to US-assisted atomization. 

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