EN 16339:2025 is a European standard that specifies a method for determining the concentration of nitrogen dioxide (NO2) in ambient air using diffusive sampling techniques. This standard is essential for environmental monitoring and air quality assessment, particularly in urban areas where nitrogen dioxide levels can significantly impact public health and the environment. Scope of EN 16339:2025 The scope of EN 16339:2025 includes several key aspects: Measurement Methodology: The standard outlines a specific methodology for sampling NO2 in ambient air using passive samplers. This involves the collection of air samples over a defined period, typically ranging from one to four weeks,...