This third volume focusses on anthropogenic organic pollutants harming the environment. Their structural diversity and fate in the environment, their effects and relevance are presented. For such a flexible usage this textbook series 'Fundamentals in Organic Geochemistry' consists of different volumes with clear defined aspects and with manageable length. Organic Geochemistry is a modern scientific subject characterized by a high transdisciplinarity and located at the edge of chemistry, environmental sciences, geology and biology. Therefore, there is a need for a flexible offer of appropriate academic teaching material on an undergraduate level addressed to the variety of students coming originally from different study disciplines.