1. You receive a potential drug sample for analysis. The appearance of the powder suggests that it is adulterated and may contain more than substance. Would spectrometry be a good analytical tool in this case? Why or why not? If not, what other technique could be used?
2. If you wanted to analyze a particular sample for the presence of trace amounts of inorganic substance, would X-ray diffraction be a suitable analytical tool? Why or why not?
3. Upon arriving at the crime scene of an attempted homicide, police officers observe a man fleeing the scene and apprehend him. He is suspected to be the shooter in the attempted homicide and the police wish to test his hands for the presence of compounds consistent with gunshot residue (GSR). How should they proceed? What instrument would be beneficial for determining the presence of compounds consistent with GSR?