ABSTRACT
This chapter explores the residue levels in fish from different parts of the world and examines the reasons for the variations and fluctuations in the residue concentration in fish. The residues reported in fish of different countries, in general, reflect two points: the intensity of the use of pesticides and the general level of awareness of the environmental problems in different countries. Major contributions to the environmental monitoring of pesticide residues in fish in Europe have come from countries near and around the Baltic. F. E. Pick et al. transported tissues of birds and fish to the laboratory in glass jars containing formalin, and the tissues were stored at 4°C until extracted within 2 months. Usually only persistent compounds like the organochlorine's are recorded in the tissues of fish. The chapter describes the care that should be exercised in employing ultrasensitive analytical tools and the pitfalls of mistaken identity.
