Introduction
One of the key responsibilities of modern analytical scientists is “solving problems,” or “troubleshooting.” As a matter of fact, this is the most attractive reason for us to enter this field. “Problems” can arise in research, development, production, technical services, regulatory requirements (such as EPA or FDA), litigation, and many other areas [l]. The role of the analytical chemist in industry, quality assurance, methods and technique development, troubleshooting (also called “firefighting”), research or science resource, and miscellaneous analytical roles is described in an extremely interesting report entitled “Analytical Chemistry in Industry” [2].