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From the publisher:

The lecture notes provide data on the isotopes of elements, the authors of their discovery, their content in the Earth's crust, as well as on natural minerals, physicochemical constants, physical and chemical properties. Methods of obtaining simple substances, applications, sources of pollution, environmental impact, biological role and degree of toxicity are discussed. The book contains descriptions of various metal-containing materials, including alloys, their composition, purpose and contaminant impact on food. It provides information on the chemical composition of food, the impact of the most important chemical elements on the human body through food and water, and highlights global environmental issues. The book addresses the problems of ecological balance, radioactive contamination, and human health.