Phenanthrene standard solution is primarily used in analytical chemistry for calibration and quality control purposes. It serves as a reference material in gas chromatography (GC) and high-performance liquid chromatography (HPLC) to identify and quantify phenanthrene in environmental samples, such as soil, water, and air. This solution is essential in monitoring polycyclic aromatic hydrocarbons (PAHs) pollution, ensuring accurate measurement of contaminants in industrial and environmental studies. Additionally, it aids in research focused on the degradation and behavior of PAHs in ecosystems, supporting efforts to assess environmental risks and develop remediation strategies.