Kádmium

Kádmium is a chemical element with the symbol Cd and atomic number 48. It is a soft, malleable, bluish-white metal. Cadmium is found in small amounts in the Earth's crust and is often a byproduct of zinc mining.

Cadmium has a variety of industrial uses. It is commonly used in the production of batteries, particularly nickel-cadmium (NiCd) rechargeable batteries. It is also employed in electroplating to provide corrosion resistance to other metals, in pigments for paints and plastics, and as a stabilizer in PVC. Alloys containing cadmium are used in low-melting-point solders and bearings.

Despite its industrial utility, cadmium is a toxic heavy metal. Exposure can occur through inhalation of contaminated air or ingestion of contaminated food or water. Occupational exposure is a primary concern in industries where cadmium is used. Chronic exposure to cadmium can lead to serious health problems affecting the kidneys, bones, and lungs. It is classified as a human carcinogen.

Due to its toxicity, the use of cadmium is regulated in many parts of the world. Efforts are underway to reduce cadmium emissions and find safer alternatives for its applications. Proper handling and disposal of cadmium-containing products are essential to minimize environmental contamination and human health risks.