Y solution is a certified standard solution containing 10,000 µg/mL of Yttrium (Y) in 2.0 mol/L nitric acid (HNO₃). It is used in analytical chemistry, particularly for calibration in techniques such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), and Atomic Absorption Spectroscopy (AAS). This solution enables accurate detection and quantification of Yttrium traces in environmental samples (e.g., water, soil), geological materials, industrial products, and biological tissues. As a specialty chemical, it serves as a reference standard for quality control in laboratories, ensuring precise measurements in research, regulatory compliance, and metallurgical analysis.