Final answer:
Tandem mass spectrometry is utilized to achieve heightened accuracy in substance identification, essential in fields like law enforcement, forensics, and medicine.
Step-by-step explanation:
Tandem mass spectrometry is used to obtain greater accuracy in the identification of substances through detailed analysis. This technique is particularly beneficial in a variety of fields such as law enforcement for the identification of illegal drugs, forensics for determining the cause of fires, and medicinal applications including the study of metabolites. Often, mass spectrometry is coupled with other methods, such as gas chromatography, to enhance its sensitivity and selectivity, thereby providing a more precise analysis of complex samples.