Linking analytical chemistry and environmental science, this book discusses the underlying principles of analytical measurements, their limitations, validity, and interpretations. It includes coverage of the underlying chemistry involved in analytical techniques. This is done in a way that enables students to grasp the strengths and weaknesses of a technique, together with its principles of operation, without becoming enmeshed in the chemical small print. Links to environmental uses are indicated in broad terms and them exemplified in more detail by accounts of specific and important environmental problems.