Introduction
High-purity molybdenum trioxide (MoO3) is a key raw material valued for its unique crystal structure and chemical and physical properties. It is primarily used to produce pure molybdenum metal, which enhances high-strength alloys and high-temperature steels for aircraft. Additionally, MoO3 is widely applied in photovoltaics, energy storage, catalysis, and biomedical fields.
Accurate impurities analysis in pure MoO3 is essential to ensure the purity grade and quality of the final product. For low-level impurities analysis, the commonly used analytical techniques may include atomic absorption spectroscopy (AAS), inductively coupled plasma-optical emission spectroscopy (ICP-OES), and inductively coupled plasma-mass spectrometry (ICP-MS). Of these, ICP-OES is the most utilized due to its advantages of high matrix tolerance, sensitivity and multi-element analysis capability. However, accurately determining low-level elements in a Mo matrix using ICP-OES may be challenging because of the complex spectra caused by the matrix element of Mo.
In this work, the elements specified in Chinese Standard YS/T 639-2023, along with cadmium (Cd) and manganese (Mn), were determined in pure MoO3, demonstrating the outstanding capabilities of the Avio® 220 Max hybrid simultaneous ICP-OES to accurately analyze trace elements in a line-rich matrix.