SAMPLING DEVICES

Air samples are collected manually or using semi-automated equipment at predefined intervals—typically once per day, per week, or over several days. Unlike continuous monitoring systems, which deliver real-time data, interval sampling focuses on capturing representative particle samples over a specified period. These samples are collected on filters or substrates and subsequently analyzed to determine mass concentration, chemical composition, morphology, and other characteristics.
This approach is particularly useful for source attribution, or when high-resolution chemical or elemental analysis is required. It also offers greater flexibility in deployment and can be more cost-effective in environments where continuous monitoring is not necessary or feasible.