nehézfémekre

Nehézfémekre, or heavy metals, refers to a group of metallic chemical elements with a relatively high density. The term is not strictly defined by a specific density value, but generally includes elements like lead, mercury, cadmium, arsenic, and chromium. These metals are often found naturally in the Earth's crust, but human activities such as mining, industrial processes, and the burning of fossil fuels can significantly increase their concentration in the environment. While some heavy metals are essential micronutrients for living organisms in trace amounts, many are toxic even at low concentrations. Their persistence in the environment means they can accumulate in soil, water, and living tissues, leading to bioaccumulation and biomagnification. Exposure to toxic heavy metals can cause a range of adverse health effects, affecting various organ systems including the nervous, respiratory, and reproductive systems. Environmental pollution by heavy metals is a significant concern, impacting ecosystems and posing risks to human health. Monitoring and remediation efforts are crucial to mitigate the negative impacts of heavy metals on both the environment and public health.