Cadmium standard samples are primarily used in analytical chemistry for calibration and quality control purposes. They serve as reference materials in techniques like atomic absorption spectroscopy (AAS) and inductively coupled plasma mass spectrometry (ICP-MS) to ensure accurate measurement of cadmium concentrations in various samples. These standards are essential in environmental testing to monitor cadmium levels in soil, water, and air, helping to assess pollution and compliance with regulatory limits. In industrial settings, they are used to verify the purity of materials and detect trace cadmium in products such as batteries, coatings, and alloys. Additionally, cadmium standards play a critical role in research laboratories for developing and validating analytical methods, ensuring reliable and reproducible results in studies related to toxicology, environmental science, and material analysis.